What Is Machinery?and Its Uses.?

Machinery is a series of components working together to accomplish a particular task. They can be crude, simple machines such as a block and tackle or very complex like a CNC Machine or a monster earth moving crane. Most machinery is used in production or manufacturing. However machinery is als o used to move a ship through the water, dig a tunnel or mine shaft, drill for oil, make a baseball bat, make candy etc. The uses are endless

1. Please tell me more details about Suyett SWC Universal Coupling.?

Connecting two different axis shaft drive, can not buffer, damping overall fork head structure, bearing fixed without the bolt, avoid loose bolts break, ease of maintenance, extended service life, high reliability, large carrying capacity, angle, and the conditions of work in the 5 25. Suitable for rolling mill machinery, lifting transport, engineering machinery, petroleum, machinery and other heavy machinery to meet the requirements of different mounting types

2. Without saying the title, what was the first video game you played?

A blue spikey creature which runs really fast especially when curled up into a ball. He goes through "zones" to collect rings and free animals from a man with an oval figure and long skinny limbs who tries to stop him with machinery that he has built himself

3. Where are belt drives used in industry? On what machinery are they used?

You see them on HVAC applications, like air handlers. Typical is an electric motor belt hooked up to a squirrel fan or maybe a conveyor belt. Rock quarries, huge exhaust fans, grain elevators, dryers. And of course back up generators like those with big diesel engines. And those old school saw mills you see at the State Fair that are hooked up to a coal fired steam engine. Good Luck!

4. How do ball bearings reduce friction in machinery?

Much the same way that wheels reduce friction compared to just dragging something across the ground: it's easier to make round things roll than to slide one thing over another. Sometimes we don't bother, we just machine really smooth mating surfaces and oil them. But normally, if you have two surfaces trying to move past each other, they do so quite a bit more easily if there are rolling things in between them.

5. Theory about ghost's and apparition's and "Ghost Hunting". I ask you this............?

Theory says ghosts emit EMF's. But so does faulty wiring and some appliances and machinery

6. Will i have trouble unscrewing the gas valve from the manifold on my furnace?

If you do not know how to do this, please get help. You could tear up an expensive piece of machinery, you could leave gas leaking which can explode your house, etc. This is serious business

7. Why is hydraulic machinery so effective???

There is a huge mechnical advantage. The pressure in a fluid is the same everywhere in that fluid. Take your car brakes, for example. You can press a small plunger and increase the pressure on it to a very high pressure, let's say 100 psi. It is easy because you are compressing a very small area, lets say 1/2 square inch. That would take 50 pounds of pressure. But, one brake pad is equal to lets say 8 square inches. The total pressure exerted on the brake disk is 800 psi. Then you have 8 brake disks, each exerting 800 psi.

8. Can a 530 chain be riveted without buying the 130 dollar tool?

The pins are very hard but I guess you could mushroom the tops over. However, then you have the problem of putting it on, some bikes require the removal of the swing arm. You can always use a master link, there's three different styles. One not used much any more had a hole in the end of each pin for a cotter key. The other two have a thin, spring steel piece that slips over grooves cut in the ends of the pins. One is shaped something like the side plate with a slit on one end and the other is shaped sort or like a tuning fork. I have lots of machinery that uses chains and I like the latter version best. I know they say to not use mater links on bikes, but I used to run them on my old 750 Honda for years and never one had one come off. I think that was liability driven more than anything. The secret is to not twist or distort the spring steel clip (although you do have to twist it a bit to get it on) and to locate it so that the solid end of the clip is on the forward traveling side and the split end is on the trailing end.

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Global Blister Packaging Machinery Market 2020-2024| 10% CAGR Projection Over the next Five Years| T
Global Blister Packaging Machinery Market 2020-2024| 10% CAGR Projection Over the next Five Years| T
Global Blister Packaging Machinery Market 2020-2024| 10% CAGR Projection over the Next Five Years| TechnavioLONDON--(BUSINESS WIRE)-- The blister packaging machinery market size is poised to grow at a CAGR of over 10% during the period 2020-2024, according to the latest market research report by Technavio. Request a free sample report This press release features multimedia. The alarming increase in cardiovascular problems, diabetes, nervous system disorders, the growth of the aging population, and new launches by pharmaceutical manufacturers are driving the demand for the pharmaceutical products such as drugs and medicines that require blister packaging. Moreover, blister packaging reduces the cost of the packaging of OTC drugs by 50%. Thus, the increase in demand for the blister packaging solutions, from the pharmaceutical sector will drive the growth of the global blister packaging machinery market during the forecast period. This research report also analyzes other important trends and market drivers that will affect market growth over 2020-2024. Blister packaging of pharmaceutical drugs using manual processes proves expensive when compared to automated blister packaging solutions. The manual task generally involves various activities such as picking up of the blister card and blister insert, sealing of blister card, and labeling of the final product. On an average, around 1.5 minutes is taken for manually filling and labeling of a unit dose blister card that has an average of 35 doses. Thus, companies are shifting to automated blister packaging machinery that cuts down the time and labor cost by more than 50% due to the high precision and increased efficiency of the machines. Thus, the reduction in cost and other advantages of automated machines will drive the demand for blister packaging machinery during the forecast period. "Factors such as the increasing use of robotic blister packaging machinery, growing demand for multi-functional blister packaging machinery and the development of hygienic blister packaging machinery will have a significant impact on the growth of the blister packaging machinery market value during the forecast period," says a senior analyst at Technavio. Register for a free trial today and gain instant access to 17,000 market research reports. This market research report segments the blister packaging machinery market by application (pharmaceutical, food, and others) and geography (APAC, North America, Europe, South America, and MEA). The APAC region led the market in 2019, followed by Europe, North America, South America, and MEA respectively. The growth of the blister packaging machinery market share in APAC can be attributed to factors such as the increase in the middle-class population and the strong growth of the economy in the region. Technavio's sample reports are free of charge and contain multiple sections of the report, such as the market size and forecast, drivers, challenges, trends, and more. Some of the key topics covered in the report include: Technavio is a leading global technology research and advisory company. Their research and analysis focuses on emerging market trends and provides actionable insights to help businesses identify market opportunities and develop effective strategies to optimize their market positions. With over 500 specialized analysts, Technavio's report library consists of more than 17,000 reports and counting, covering 800 technologies, spanning across 50 countries. Their client base consists of enterprises of all sizes, including more than 100 Fortune 500 companies. This growing client base relies on Technavio's comprehensive coverage, extensive research, and actionable market insights to identify opportunities in existing and potential markets and assess their competitive positions within changing market scenarios.com.— — — — — —What To Expect When Budgeting For PackagingWhen you are budgeting for packaging, there are several factors that can impact your total cost of packaging, and several ways you can reduce these costs by optimizing your current processes. It's difficult to simply place a specific dollar amount to a project like this because no business operates the same way, and what works ideally for your packaging line may not work for any other business in your market. Sometimes you have to think outside of the box to fully realize the potential for cost-savings. Selecting who you work with and when you bring them in can significantly impact the dollar amount you can expect to budget. Here are a few other items that can impact your total packaging cost, including multilayer films, bundling films, maintenance, and new technology: A multilayer film is created by layering polymers with different, specific characteristics and extruding them together through a slotted die and merging them together before the films are cooled. This allows each layer to provide 100% of its characteristic benefits equally, along with greater machinability and durability. Multilayer films are generally used in high-performance flexible packaging applications. These applications include (but are not limited to) shrink packaging, stretch wrapping, pouch packaging, bagging and flexible laminates. Why Use Multilayer Co-extruded film rather than Monolayer? • Customization: Using multilayer films allows for complete customization to meet the specific packaging requirements of your product, your brand, and your packaging machinery. • Sustainable Options: You can add layers that incorporate sustainability through non-petroleum, renewable-resource based resins like corn stalk and sugar-cane, and even re-usable, recycled materials. Multilayer flexible packaging that includes an aluminum foil layer coated in polyethylene laminate (which is often seen in pouch packaging) is not easily recyclable because the layers have to be separated to be fully recycled or up-cycled. This does not mean it's a no-go as a sustainable packaging option. New technologies are able to separate films and use the incinerated PE to produce energy. • Downgauging: You can achieve more packages per roll while also using a thinner film because the manufacturer can optimize each layer separately. Not only does this lower the amount of packaging required per product, it also helps you achieve greater efficiencies with longer production runs and less roll change-overs required. Example of a 5-layer extruded laminate Package And EACH LAYER'S Responsibility: • Allows the Package to be Heat-Sealable How Does It Save Costs? • Maintenance: Our experience shows that companies that use multilayer extrusion technology for packaging vs monolayer technology will often see a significant reduction in maintenance costs on their packaging lines. Monolayer films tend to be stickier and leave more residue on machinery parts, which extends cleaning time and the amount of maintenance the machinery used will require. Using multilayer films can reduce the amount of residue left on the sealer bars and keep your maintenance costs down. • Rewraps: With certain layers of protection added to your film, you can greatly reduce the amount of damaged goods that result in rewraps. Multilayer films provide additional strength and can reduce the amount of maintenance required on packaging machinery. If you are buying a customized multilayer film direct from a manufacturer you will want to know exactly what you are looking for, which can be difficult as there are literally thousands of polymer resins and combinations available. Working with a Packaging Professional can reduce the many headaches that incorrect film selection can create. Along with strong relationships with multiple film manufacturers, you will gain the added benefit of their knowledge and experience to guide you in optimizing the film for your application and your packaging line. In certain applications it's not uncommon to see a packaging cost reduction of over 30% by switching to bundling films in lieu of corrugated boxes, provided your product can handle your supply chain. Rather than using a corrugated tray for support for multipacks of product, films that are made today can handle heavier products while keeping the same form. As an added bonus, high-quality graphics can be printed directly on the film, reducing spend on additional labeling. Ditch the additional packaging and opt for a more eco-friendly, film-only package package. On average companies lose 2.5% of their annual revenue on freight damage. By choosing the right packaging materials and using newer technologies, it is possible to get twice as much load containment with your stretch films while using using the same amount of film. It is not uncommon for businesses to see a 30% reduction in their stretch film costs when updating their end-of-line packaging solutions. With certain machines, like the Lantech Q-series pallet wrappers, for example, it may be possible to replace the pre-stretch gears from 200 to 250 and maximize your film usage while maintaining load containment , resulting in a 20% film savings. • Go All Electric : If you replace your old machines with newer technologies, you will see huge improvements in energy usage. If you break down your utility bills, compressed air is one of the most expensive utilities in your facility. By switching to all-electric vs., pneumatic machinery, you allow your business to save on the cost of making compressed air while also eliminating all of the maintenance required for air cylinders over time. • Pneumatic Wear: Historically, pneumatic machinery will begin to wear out over time and this leads to irregular sealing or cutting. Machine Operators will often find ways to keep poor or worn pneumatic components running by adding more material to each package being run. This is done to keep the machine from faulting out, however, adding a half an inch, or an inch more of film-per-package can add up your total packaging spend quickly. If you are running pneumatic machinery and are seeing increases in film usage, it may be worth connecting with a professional to help you determine the cause and find a solution that fits your budget and your business goals. With regular preventative maintenance performed on your packaging machines, downtime typically will be on your schedule rather than simply happening to you due to a faulty or worn part on your line. If you do not have a regular PM schedule, it's imperative to work with a professional or to create a plan in-house. Gain control of your maintenance costs and keep emergency repairs from cropping up at the worst possible moment, e.g., when you have order at the end of the month that needs to get out. With all of the potential to reduce costs and maximize the potential of your packaging operation, it would be in your best interest to connect with a Packaging Professional before you plan your budget. Not only will they understand your goals beforehand, they can provide insight to specific materials and machinery that will provide the most benefit to your needs. Additionally, with access to multiple suppliers you can be sure you have multiple options with the least effort on your part, as well as any distributor discounts they may have access to. If you have a new product to launch or a packaging overhaul now in the future, talk to us!
Oil Saving Tips for Excavator
Oil Saving Tips for Excavator
Many machine friends have the trouble of large oil consumption of excavators. When the excavators are opened one day, the fuel consumption is like burning money, and the profit will be reduced. How to save fuel without reducing the task rate and mechanical life is the most concerned problem of all machine owners. Let's share the fuel-saving tips of excavator operation1. High level loadingDuring loading, the excavator shall be in a high position as far as possible to make the truck park at the height almost the same as the working surface; How much "energy" can you save? Compared with direct low-level excavation, it can shorten the cycle time by about 12%, reduce the fuel consumption by about 8%, and improve the operation efficiency by about 40%.2. Stick excavation rangeWhen the bucket cylinder and the connecting rod, the head rod cylinder and the head rod are at 90 °, the cylinder pushes the excavator with the greatest force. For the excavation of natural ground, the floor angle of bucket or scarifier shall be maintained at about 30 °, and the bucket rod shall be retracted. When the stick is close to vertical, the stick has the maximum force and can carry more load3. Avoid idling for a long timeTo reduce the idle speed of the engine, when the excavator is running at idle speed, it is also using the hydraulic pump to circulate the hydraulic oil. The longer the idle time is, the more fuel will be wasted. Try not to idle the excavator during standby and rest4. Avoid heavy load and pressure dropWhen the excavated sand or stone is overloaded, the excavator will enter the pressure drop mode. Assuming that 6 minutes in 10 hours a day is in the pressure drop mode, if the pressure drop can be avoided, about 840 litres of diesel oil can be saved every year. Pressure drop operation costs not only oil, but also machine. You can't lose a lot of money5. Reduce the circling angleReducing the circling angle when loading the dump truck can shorten the operation cycle, add the operation volume in the unit time, and naturally improve the fuel consumption efficiency.6. Reduce the engine speedIn the same excavation operation, when the engine is at the maximum speed, the operation speed is fast, but the fuel consumption is high; When operating under non full throttle, properly reduce the engine speed (without affecting the operation efficiency). Although the operation speed is reduced, it can reduce the fuel consumption and improve the fuel efficiency.7. Straighten the fuselageIf the excavator is not parked horizontally during operation, it is easy to increase the slewing load. As we all know, it is necessary to reduce the rotation angle during work. If the fuselage is on an inclined plane, the rotation process is divided into half uphill and half downhill. It is very difficult for the excavator to rotate and go uphill. On the contrary, it is really easy for all operators to stop the fuselage horizontally8. The throttle size is appropriateWhen the excavator works, it is mostly a composite action, such as lifting the boom at the same time, recovering the stick, hooking the bucket, and rotating.The speed and force of each action are controlled by the stroke of the operating lever. When the engine speed is very low, in order to avoid serious jitter and flameout of the engine, it is necessary to decompose the composite action to make a reasonable distribution of very limited energy, and give appropriate buffer through the operating lever to match the low power output brought by low speed9. Trenching operationWhen trenching, excavate both sides of the trench first, and then the middle part. The smaller the excavation depth, the better the economic type of excavation. Try to adopt the method of segmented excavation. The excavation is divided into upper, middle and lower layers. If one digs from low to top, firstly, the scope of action is increased. Secondly, the power of the excavator is reduced due to the increase of the scope, which reduces the work efficiency, which costs a lot of oilThe most important thing is to develop good operating habits. Over time, it will save a lot of oil!
Henzhen Precision Machinery Parts Processing
Henzhen Precision Machinery Parts Processing
To expand a bit on Chromatix's great answer: if you do all calculations at the highest precision, and convert to and from that, you only need a single FPU on your chip.When you build a floating-point VPU, you are building multiple FPUs in parallel anyway. It's the whole point1. Is a ranger's favored enemy damage bonus precision damage?In my view, it is rather the precision damage, with the exception that it works against the chosen enemy, but all other conditions that hinder the precision damage does work.Example, variant of rogue to attack Constructors, causes 1/2 of the Sneak attacks, Constructors it is immune to this ability, but it works.The only exception is that the ranger's ability works against the chosen creature (even though immune is critical or indiscernible anatomy), so looking at this point of view, both books are correct. Precision Damage:.2. Are there electrically controlled precision rheostats that are not solid stateThere is indeed - this motorized potentiometer. Note that it has two separate resistive tracks. Or had you not realized that you have to disconnect a resistor from its' circuit to measure it?.3. Very slow boot time for Dell Precision laptopThere is not need for the term SSD to appear in the name of the product. Similar to how a "volvo 360" is not called "automobile volve 360", yet it still is a car.So, no need to panic or suspect that you got something else than ordered. Googling on your bolded name i find lots of hits for SSDs. It appears that this name is used for a range of three MLC SSD's with 128 / 256 / 512GB capacity. So yes, it is a SSD.As to boot times. Wow, 30 seconds is FAST. If you expected a lower time then you will need to figure out how long it takes to do parts of the boot process. E. g. POST might take a minute and actual windows loading another minute. (Actual times measure on my i7 desktop). If POST is long then check things like boot order (is it trying to PXE boot, then boot from ODD4. Six yolks in a bowl: Why not optimal circle packing? [closed]In addition to the non-rigid quality of egg yolks and the noted third dimension, it would take precision to align six yolks in a circle. By random placement, they most often find a closer packing, i. e. one without a big honking space in the middle.5. How do you use half-precision float in either C/C or Python well?Half precision floats do not really exist in PythonIn Python floating point values are always the equivalent of C doubles, and there is no simple way of using 1/2 precision floats without writing a C extension (assuming that 1/2 precision exists in C), but even if you did that, any attempt to use the value in Python would immediately convert the value back to a double6. Relevance of fixed-point and arbitrary precision computationsFor some nice examples of where high-precision arithmetic has been useful in mathematics, take a look at the book Mathematics by Experiment by Jonathan Borwein and David Bailey. There's also this sequel, which I have not read7. What is the proper way to calculate distance in km from degreesConvert your points to UTM first using Rgdal, for example:Or, you can use the package 'raster' to compute the distances in meters directly from the latlong points, though the estimates will vary slightly due to lack of precision in the lat and long coordinates8. What's so special about handguns made by Sig Sauer and H&K?High quality materials and precision rifling. Etc9. How to calculate a "rational” sine/cosine to specific digits of precision?I would suggest the following tips:Since you are using rational arithmetic and you need to limit the accuracy because sine is typically irrational, the easiest way to do so is to work consistently with fractions of the form $fracaB^n$ where $a$ is integer (of course), and $B$ is some suitable base - i.e. terminating base-$B$ fractions, and you limit $n$ as needed. One might want to choose $B = 10$, but for computer arithmetic $B = 2$ is probably best since then you can maximize efficiency using bit shifts to do a fair bit of the fraction arithmetic. (In that case, you will probably want to limit $n$ to 53, which is the number of bits needed to get around $10^-16$ residual as in IEEE 754 double precision floating point arithmetic.) You can truncate this representation as desired simply by shifting the numerator and denominator. Just do not reduce the fractions the usual way until perhaps the very end (if you are "allowed" to do that, i.e. how much control do you have over the rational arithmetic package?). Basically you will be implementing fixed/floating (here really, fixed) point arithmetic with a fraction representation.The second bit I would want to point out is the Taylor series for sine really only works best when the input is in $(-1, 1)$. That is because outside this range, the "power of $x$" part grows up, while within it, it shrinks down. When it grows up, it's in effect "fighting" the factorials in the denominator which are trying to shrink the terms. Since the factorial eventually "wins" for suitably large term index, the series still converges, but you lose precision if you are doing this in floating-point, or will rack up huge fractions in rational, and moreover will have to sum a great deal of terms (in fact FP may not converge at all due to precision loss if the $x$ is large enough). Within this interval, however, because the power part is shrinking down, it actually works with the factorial and the series converges even faster than that for $e$ - that is to say, pretty damn fast. Taking it a bit more strictly as $(-frac12, frac12)$ would be ideal and relatively simple. To ensure the argument is within this range, you can use trigonometric reduction identities like $$sinleft(fractheta2ight) = pm sqrtfrac1 - cos(theta)2$$ $$cosleft(fractheta2ight) = pm sqrtfrac1 cos(theta)2$$ where you will need to mind your quadrant for the sign of the square root. For reduction of a much large angle, subtracting/adding $2pi$ (i.e. $tau$) repeatedly is possible, but actually just halving all the way down has the better asymptotic complexity.
Compaction Machinery of Earth Rock Dam and Calculation of Its Production Capacity
Compaction Machinery of Earth Rock Dam and Calculation of Its Production Capacity
Cohesive soil has large cohesive force and is sensitive to water content. The compaction of cohesive soil requires that the external force is to overcome the internal bonding force. For non cohesive soil, the cohesive force is small, and the internal friction is the main factor. Therefore, for the compaction of non cohesive soil, the external force is required to overcome the internal friction or reduce the internal friction, so as to obtain better compaction effect with less external force. In the process of compaction, according to the different compaction machines and tools providing external force, the external force acting on the soil is divided into three types: rolling, tamping and vibrationThe characteristic of rolling is that the force is static pressure, and its size does not change with the action time.The characteristic of tamping is that the force is periodic instantaneous impact power, with instantaneous pulse, and its size changes with time.The characteristic of vibration is that the force is a periodic repeated force, and its size changes with time. The length of the vibration period varies with the vibration frequency(1) Compaction machinery and compaction method:According to the compaction force, there are usually three kinds of machines and tools: rolling, tamping and vibrating compaction. Rolling and tamping (more suitable for sandy soil) can be suitable for all kinds of soil, and vibration is suitable for sandy soil. With the development of construction machinery, there are vibrating rollers with the simultaneous action of vibration and rolling, vibrating rammers with the action of vibration and tamping, etc. The following types of compactors are commonly used:1. Sheep foot roller and its compaction methodThe surface of the horn roller is provided with staggered truncated cones, which look like sheep feet. The side of the steel hollow drum is provided with a loading hole, and the loading size is determined according to the design needs. The roller shaft is supported by the frame and connected with the rod shaft of the tractorThe sheep foot of the sheep foot roller is inserted into the soil, which not only compacts the soil at the end of the sheep foot, but also compresses the lateral soil, so as to achieve the effect of uniform compaction. In the process of compaction, sheep's feet can loosen the surface soil, and good interlayer bonding of soil materials can be ensured without planingThere are two ways to run the horn mill: forward and backward staggered distance method and circle rotary sleeve pressure method. The forward and backward staggered distance method is easy to operate, and the processes such as rolling, soil paving and quality inspection are coordinated, which is convenient for sectional flow operation, and the compaction quality is easy to ensure; Advance and retreat offset method is mostly used in China. In this way, in order to avoid missing compaction, both sides of the rolling belt can be pressed back and forth for a sufficient number of times, and then staggered compaction can be carried outThe stagger width B is calculated according to the following formula: B = B / N B - net rolling width, m; N - Design rolling times. The rotary sleeve rolling method requires a large working face, which is suitable for multi roller combined rolling. The utility model has the advantages of high production efficiency, but there is too much heavy pressure at the junction of turning and casing pressure in rolling, which is easy to overpressure. When the turning radius is small, it is easy to cause soil layer distortion and shear failure. It is easy to leak pressure at the four corners of the turning, and the quality is difficult to guarantee2. Vibrating roller and its compaction methodIt is a compaction machine combining vibration and rolling. The diesel engine drives the shaft with eccentric block connected with the fuselage to rotate, forcing the roller to produce high-frequency vibration. The vibration function is transmitted to the soil in the form of pressure wave. Under the action of vibration, the internal friction between soil particles decreases rapidly. At the same time, due to the uneven particle size and different quality, there is difference in inertial force, resulting in relative displacement, so that the fine particles fill the gap between coarse particles to achieve compactness. However, the cohesive force between cohesive soil particles is the main factor, and the soil particles are relatively uniform. Under the action of vibration, the compaction effect like that of non cohesive soil can not be achievedDue to vibration, the compaction influence depth of vibrating roller is 1-3 times greater than that of general rolling machinery, up to more than 1m. Its rolling area is larger than that of vibrating rammer and vibrator, and its productivity is very high. The vibrating roller has good compaction effect, which greatly improves the relative density of non cohesive soil, greatly reduces the settlement of dam body, significantly enhances the stability, and greatly improves the seismic performance of geotechnical buildings. Therefore, the anti-seismic code clearly stipulates that the geotechnical buildings with anti-seismic requirements must be compacted with vibration roller. The vibrating roller has the advantages of simple structure, convenient manufacture, low cost and high productivity. It is an efficient compaction machine for compacting non cohesive earth and rock materials3. Pneumatic tire roller and its compaction methodPneumatic tire roller can be divided into uniaxial and biaxial. The main structure of the single axle is composed of a metal trunk loaded with load and 4-6 pneumatic tires installed on the axle. During rolling, load in the metal truck and inflate the pneumatic tire to the design pressure at the same time. In order to prevent damage to the pneumatic tire, support the metal box with a jack during shutdown and release the air in the tireWhen the pneumatic tire roller is rolling soil, the pneumatic tire deforms with the deformation of soil. With the increase of soil compaction density, the deformation of pneumatic tire increases accordingly, so that the contact area between pneumatic tire and soil increases, and a more uniform compaction effect can always be maintained. Compared with the rigid roller, the pneumatic tire not only has uniform contact pressure distribution on the soil, but also has long action time, good compaction effect, large thickness of compacted soil and high production efficiencyPneumatic tyred roller can adjust its internal pressure according to the characteristics of compacted soil material, so that the pressure of pneumatic tyred on soil is always kept within the limit strength of soil material. The flat roller is rigid and can not adapt to the deformation of soil. If the load is too large, the contact stress of roller will exceed the ultimate strength of soil. With the increase of load, the contact surface between pneumatic tire and soil increases, and the contact stress still does not exceed the ultimate strength of soil. Pneumatic tire roller is suitable for heavy and efficient development. Because the pneumatic tire roller is suitable for compacting both cohesive soil and non cohesive soil, it can be used for multiple purposes, which is conducive to the rise of impervious soil and dam shell soil at the same time, and has a wide range of uses4. Tamping machineryTamping machinery uses the impact force to compact the earthwork, which is most suitable for compacting the earthwork in narrow parts that are difficult to be constructed by rolling machinery. Commonly used are: frog rammer, tamping plate, dynamic rammer, etc. ① tamping plate and its compaction method. The tamping plate can be hoisted on the arm of the excavator removing the soil bucket, and the rope system can be controlled by the winch to raise the tamping plate. When ramming the earth material, loosen the rigging to make the ramming plate fall freely and tamp the earth material. The compacted paving thickness can reach 1m and the production efficiency is high. For large particle filler, ramming plate can be used for poor compaction, and its crushing rate is much greater than that of rolling machinery. In order to improve the compaction effect and adapt to the characteristics of compacted soil materials, when ramming cohesive soil materials or slightly frozen soil materials, the ramming plate can be installed with sheep feet, that is, sheep feet ramming. The size of ramming plate is closely related to the paving thickness H. Under the action of tamping, the stress distribution along the vertical direction of the soil layer changes with the size of the short side of the tamping plate. If the size of the ramming plate remains unchanged, the stress difference between the surface layer and the bottom layer increases with the increase of the paving thickness. The greater the difference, the more uneven the vertical density of the compacted soil layer. Therefore, when selecting the size of the ramming plate, try to make the short side size of the ramming plate close to or slightly greater than the paving thickness. When the ramming plate works, the fuselage moves backward in the middle of the compaction section. With the rotation of the ramming plate arm, the ramming trace of the earth material compacted is fan-shaped. In order to avoid missing tamping, set tamping shall be carried out between tamping tracks, the overlapping width shall be 10-15cm, and the tamping track rows shall also be overlapped with the same width. In order to give full play to the working efficiency of the ramming plate and avoid excessive pressure on the front and rear sleeves, the working angle of the ramming plate should not be greater than 80 ° - 90 °(2) Productivity of compaction machinery1. Productivity calculation of rolling machinery2. Productivity calculation of ramming machinery(3) Selection of compaction machinery1. Principles for selecting compaction machinery1) Existing equipment and construction experience of the construction team;2) It can meet the design compaction standard;3) Adapt to the physical and mechanical properties of compacted soil;4) Meet the construction strength requirements;5) The type and specification of equipment shall be corresponding to the size of working face and compaction position.2. Applicability of various compaction machinesPneumatic tyred roller is suitable for rolling cohesive soil and gravelly soil, and compacting soil materials with water content slightly higher than the optimal water content. Sheep foot roller is suitable for compacting cohesive soil, and heavy sheep foot roller is suitable for heavy cohesive soil with water content lower than the optimal water content; Vibratory roller is suitable for compacting rockfill and gravel materials. The ramming plate is suitable for tamping sand gravel, sandy soil, cohesive soil and fill in narrow scenes. The contact zone with rigid buildings, bank slopes, corners and other parts can be tamped by portable ramming
Dry Goods, Simple Maintenance Knowledge of Excavator, Novices Don't Have to Regret It
Dry Goods, Simple Maintenance Knowledge of Excavator, Novices Don't Have to Regret It
Now more and more excavator masters pay attention to the maintenance of excavators, because they will inevitably encounter problems or faults in the operation of excavators. Although small excavators are simple to operate, they can operate, which does not mean they will maintain their "love machine". Therefore, they should also know a little about excavator maintenance while they can excavate excavators.01Simple troubleshooting and maintenance1. Abnormal soundWhether it is the boom, jib, bucket or swing support, if there is a abnormal noise, we must pay attention to it, listen carefully, find out the abnormal noise point, and finally add butter. If the pump, valve, oil cylinder and motor make abnormal noise, relevant external observation shall be made, and the working phenomenon and working pressure of the parts that make abnormal noise shall be checked2. Wear and deformation of working deviceIt is necessary to regularly check the common working devices to see if they are worn and deformed. If they are found to be seriously worn or deformed, they need to be repaired or replaced according to the damage degree of the part.3. TrackRegularly check the tightness of the track, idler, ring gear and other parts. If serious wear is found, adjust the tightness of the track or replace accessories to prevent the track from falling off during work.4. Oil leakageIf the excavator has oil leakage, the oil leakage point should be found out first, and then the cause of the oil leakage should be analyzed. The common oil leakage is usually caused by the damage of the oil seal. The main attention is that when replacing the oil seal, if there are scratches on the piston rod, the scratches should be handled first, and then the oil seal should be replaced.5. The engine won't startIn this case, first listen to whether the starter makes a rotation sound. If not, check the starter circuit to see if there is a circuit fault. If yes, look at the smoke, eliminate the basic causes of fuel high and low pressure oil circuit, such as filter element and fuel pipeline, and finally check the air filter of intake system6. Choking caused by engineYou need to check the fuel quality, high and low pressure fuel circuits of fuel, such as filter element and fuel pipeline, and then check the air filter, high and low pressure intake pipeline and turbocharger of the intake system to narrow the fault range one by one.7. Air conditioning does not workThere are many reasons for the failure of air conditioner, but the driver can simply eliminate some problems, such as whether there is no wind failure caused by safety relay, loose compressor belt, lack of freon and so on.8. Display alarmAs long as we can recognize the meaning of each alarm icon, we can basically determine the fault cause of its alarm part. Of course, we must first eliminate the abnormal alarm caused by circuit fault.9. Horn and headlamp failureCheck whether the fuse is broken, and then check the short circuit or open circuit of the relay and appearance circuit. If these are not the reasons, replace the damaged horn or lamp.During the driving process, the most depressing thing is, of course, that the excavator is slow. Whether it is turning or operating, it is like suffering from Alzheimer's disease. At this time, our excavator master will feel that his fist is powerful and nowhere to make on the cotton02How to eliminate the slow action of excavatorFirst move: check whether the components move slowlyThe operation of a single action is slow, including walking, arm lifting, turning, bucket rotation and so on. If it is a single operation such as walking, reversing, lifting large and small arms and retracting bucket, the speed is relatively slow. For example, the pressure of overflow valve of relevant components of excavator is too low (to be tested); Failure of pump, low pressure sensor and multi-way valve; Relevant solenoid valve failure, valve core card issuing01Component failureThat is, the moving parts receive poor information or have poor contact during implementation, or the pressure of the overflow valve of the relevant components is too low (the overflow valve can control the overall pressure, and if the pressure exceeds the pressure that the overflow valve can bear, the hydraulic system will overflow). The excavator operator can knock the parts to see if there are loose screws or pressure tests, so as to carry out maintenance.02Conduction process faultThat is, a fault occurs in the command transmission process, which hinders the transmission of the command signal. Therefore, we can focus on checking the pump, low-pressure sensor and multi-way valve to see if there is a fault.03Operation center failureThat is, the command center of the excavator fails to send the signal, which is generally complex and requires professional maintenance guidance. All excavators can carefully check whether the valve core is stuck due to the failure of the relevant solenoid valve.Second move: check whether the excavator moves slowly01Hydraulic systemThe hydraulic system is one of the power systems of the excavator. If the whole excavator is slow, check the hydraulic system, whether there is regular maintenance, and whether the hydraulic oil is replaced regularly. The expired hydraulic oil will not only affect the effect and performance of the excavator, but also corrode the hydraulic wall of the excavator. At the same time, check whether the hydraulic oil circuit and oil return filter element are blocked. If they are blocked, clean the oil circuit and replace parts in serious cases02Engine power too lowLike the hydraulic system, the engine is also one of the power systems of the excavator. Low engine power will lead to low output power, and then the excavator will hold the vehicle, making the whole excavator move slowly.The output power of the engine is too low and the power is insufficient. Please analyze the output of the engine in combination with DX data and whether all cylinders can work at the same time; Check the engine for black smoke. If the fuel injection nozzle is seriously worn, the engine power will also be reduced.03Hydraulic pumpThe output of the hydraulic pump is insufficient, which is one of the conduction faults of the hydraulic system. The excavator operator can enter the service diagnosis system for relevant pressure test to see if the excavator moves slowly due to the conduction of the hydraulic pump.If the output of the hydraulic pump is insufficient, the relevant pressure can be tested after entering the service diagnosis system. Insufficient pilot pressure causes insufficient opening valve core pressure, insufficient flow and slow action.04Circuit related problemsExcavator CPU, high and low pressure sensor, solenoid valve and circuit fault.Third move: if the cold engine is normal, the hot engine moves slowly01Check oilCheck whether the fuel used meets the requirements of the excavator. If the fuel is not replaced for too long or the oil is too dirty, replace it if it is too dirty; Check whether there are copper chips on the oil inlet filter screen, causing wear of the main pump. If it is worn, disassemble it for inspection; At this time, clean the filter screen, pilot filter element, oil return filter element and oil suction filter element are blocked.02The filter element is blockedThe clogged filter element will lead to poor oil circuit. Therefore, during inspection, check whether the pilot filter element, oil return filter element and oil suction filter element are blocked. If the filter element is blocked, clean the blocking substances, and replace the filter element in serious cases.03Main pump regulatorThe piston of the main pump conditioner is stained with mud. Most of the daily work of the excavator is dealing with soil, so it is inevitable that the piston is stained with mud. However, the piston blockage will reduce the pump pressure and output power of the main pump, making the excavator move slowly. Therefore, during the daily overhaul and maintenance of the excavator, the mud in each part shall be cleanedpictureThe slow movement of the excavator makes the excavator masters very unhappy, but no doubt this is also a signal for everyone. At this time, the excavator master must carefully check the excavator failure and overhaul the excavator from these aspects, so that our excavator can get rid of dementia and return to the age of 20! The excavator is like a girlfriend. If you take care of it carefully, he will be young forever!Too high temperature of excavator engine is also a common and important maintenance point, which needs the most attention, because the engine is equivalent to the heart of excavator, and it can't move without the heart.How to eliminate the high engine temperature of excavator:First: lookIf it is found that the engine temperature is too high or the temperature indicator keeps flashing, stop and check to see whether the cooling water of the water tank is normal and whether there is leakage at the water tank, water pipe and joints. If no abnormality is found through the appearance inspection, the cooling water can be replenished as required before continuing the workIf it is still found that the temperature is too high after working for a period of time, the cooling water is greatly reduced during shutdown inspection, which is mostly due to sand holes or perforation in the water jacket of the cylinder block. After this fault is found, it should be repaired and should not be taken lightlySecond: RushIf dirt adheres to the radiator, over time, it will affect the heat dissipation effect and cause the water temperature to be too high. First blow the radiator grille with compressed air and then flush it with water pipeThird: touchWhen the engine temperature is too high, you can touch the temperature of the water supply pipe and underwater pipe to judge the fault. If the temperature difference between the two water pipes is very large, it can be judged that the thermostat does not work. If the accessories cannot be purchased temporarily, the thermostat can be removed for emergency and replaced immediately after the accessories are in placeFourth: releaseIf there is air in the cooling system, air resistance will be formed, resulting in poor cooling water circulation and excessive engine temperature. The following methods can be used for bleeding: let the engine run at high speed, gently unscrew the water tank cover until the gas is just released, and then some cooling water will flow out with the gas. Repeat this for many times until you feel that the gas is discharged (at this time, the temperature of the upper and lower water pipes will be significantly different by touching with your hand). After troubleshooting, the cooling water shall be supplemented in timeIn general, the second mock exam is to solve the problem of overheating of the excavator engine. There are four steps: "one look, two modes, three sides, four shots." as long as you master these four steps, you can solve the problem of too high temperature of the excavator engine.The above are some common faults of excavators and maintenance methods. I hope it will be helpful to the new diggers. Don't panic in case of faults. Slowly analyze the causes and repair them in time. If you also want to know the maintenance knowledge of those faults, please leave a message below
Excavator Hydraulic Oil Should Be Selected Like This! Don't Say You Don't Know!
Excavator Hydraulic Oil Should Be Selected Like This! Don't Say You Don't Know!
According to statistics, about 70% of the faults of excavator hydraulic system are caused by improper selection, careless use and untimely replacement of hydraulic oil. Therefore, the correct and reasonable selection and replacement of hydraulic oil is an important condition to give full play to the working performance and economic performance of excavator and prolong the service life of hydraulic system and its componentsGenerally, the manufacturer of hydraulic equipment specifies the type, brand and viscosity grade of hydraulic oil used in the equipment system in the equipment manual or operation manual. Users should first select hydraulic oil according to the recommendations of the equipment manufacturer.However, there will also be many occasions. The working conditions and operating environment of the system used by the user are different from those specified by the equipment manufacturer. It is necessary to select hydraulic oil by themselves, and regular oil agents should also be selected.Pay attention to the elements of selecting hydraulic oil by yourself01. Environmental conditionsHydraulic oil shall be reasonably selected according to the environmental temperature characteristics such as underground, water, indoor, outdoor, cold area, or severe cold area with large temperature change, and whether there is high-temperature heat source or open fire nearby.02. Working conditionsOil pump type, working pressure, temperature, speed, system operation cycle and working characteristics, etc.The higher the requirements for actuator speed, system pressure and mechanism action accuracy, the higher the requirements for wear resistance and bearing capacity of hydraulic oil. According to the possible working temperature of the system, continuous operation time and sanitation of the working environment, pay attention to the viscosity, high temperature performance and thermal stability of the oil during oil selection, so as to reduce the formation and deposition of oil sludge03. Oil tank sizeThe smaller the oil tank, the higher the requirements for oil oxidation safety, extreme pressure and wear resistance, air release and filtration.04. Hydraulic partsDifferent hydraulic components have a minimum configuration requirement for the hydraulic oil used. Therefore, when selecting the hydraulic oil, pay attention to the compatibility of the types of hydraulic parts and their materials, seals, coatings or paints with the hydraulic oil, so as to ensure good lubrication of each moving pair, so that the components can reach the design life and meet the requirements of service performance.05. Properties of hydraulic oilCheck its source of goods, viscosity, quality, use characteristics, scope of application, and compatibility with system and component materials to see whether all indicators can fully meet the use requirements.06. EconomyWe should comprehensively consider the price and service life of hydraulic oil, as well as the maintenance and safe operation cycle of hydraulic system, and focus on the brand with good economic benefits.reminderFor the hydraulic system with higher temperature and pressure, the hydraulic oil with higher viscosity should be selected to obtain better lubricity; On the contrary, if the temperature and pressure are low, lower viscosity should be selected, which can save energy consumption. In addition, the working viscosity of hydraulic oil at the lowest temperature of the system shall not be greater than the maximum viscosity of the pumpSelect the appropriate hydraulic oil and replace the hydraulic oil correctly. The following points need to be noted during the replacement of hydraulic oil:1. Before replacement, drain the original hydraulic oil, check the oil return filter element, oil suction filter element and pilot filter element to see if there are iron filings, copper filings or other impurities. If there are hydraulic element faults, clean the system after maintenance and troubleshooting.2. When changing the hydraulic oil, all hydraulic oil filter elements (return filter element, oil suction filter element and pilot filter element) must be replaced at the same time, otherwise it is equivalent to not changing the hydraulic oil.3. Identify the hydraulic oil grade. Hydraulic oils of different grades and brands are not mixed, which may react and deteriorate and produce flocs. It is recommended to use the specified oil of the excavator4. The oil suction filter element must be installed before refueling. The nozzle covered by the oil suction filter element directly leads to the main pump. If impurities enter, the wear of the main pump will be accelerated, or the pump will be hit5. Add oil to the standard position. There is usually an oil level gauge on the hydraulic oil tank. Look at the gauge. Pay attention to the parking mode. Generally, all oil cylinders are retracted, that is, the jib and bucket are fully extended and landed6. After adding oil, pay attention to the main pump to exhaust air, otherwise the whole vehicle will not act temporarily, the main pump will make abnormal noise (air sonic boom), or the main pump will be damaged by cavitation. The air exhaust method is to loosen the pipe joint directly on the top of the main pump and fill it directly
Price Difference of New Loader and Sales of Second-hand Equipment
The longer you stay in business with second-hand equipment, the more you feel that the price of new equipment and the price of old equipment are really in love and kill each other. The price discrimination of new equipment is a major incentive to create a huge second-hand equipment market, and the market price of second-hand equipment is a strong support for the price of new machines.First think about the discriminatory pricing of new equipment, or to put it another way, how the regional price difference of new equipment is formed. An important reason for putting aside tariff rates, market access and production cost differences is that different environments, history and psychology will cause different consumer preferences, different consumer preferences will cause different demand elasticity, and different demand elasticity will form different price constraint curves, resulting in different pricing policies.This passage is very boring. It's easy to understand when it comes to real life.As a southerner, when I first went to study in the north, one of my classmates from the North once asked me, do you really eat rice in the South all year round? I said yes, of course, and then he was very surprised and said to me, you are really good. How did you do it? At that time, I also had the same confusion. For the first time in my life, I saw that many people's daily staple food was steamed bread and all kinds of noodles. It was incredible. Over time, this question has been well answered. Nanju and Beizhi, different soil and water, cultural history and eating habits lead to different preferences for staple food between southerners and northerners.Can this preference be changed? Of course, after studying in the north for four years, I have often eaten all kinds of pasta since I never eat noodles in my hometown. Lanzhou beef ramen, oil sprinkled spicy noodles and Yangling flag flower noodles are all my favorite. Why? Because the canteen originally provides pasta and rice at the same time, because of the influence of students, and because the noodles in the canteen are cheap and heavy, you can go to the Internet cafe to play more Warcraft games.Preference, of course, exists in the customer group of the construction machinery market. From a large perspective,The United States loves bulldozers and graders. The annual sales of bulldozers in North America account for nearly half of the world's bulldozer consumption, and more than one third of the graders.In the Indian market, backhoe loader is particularly popular. A large number of JCB's backhoe loaders are sold to India, while they can hardly be sold in the Chinese market.Australia especially likes articulated trucks, while it is well known in the Chinese market that it is crazy about excavators (hook machines). The sales of excavators account for more than half of the world.Why is that? Like people's consumption preferences, they come from their unique geographical environment, customs, history and other factors. Once formed, they will strengthen themselves and are difficult to change.For example, the United States depends on two oceans. The central plain is vast, the land is fertile, the water system is developed, and the land is vast and sparsely populated. Bulldozers, graders and other tools are exactly where heroes can play. In Australia, the mining industry is developed. As for India, it may be because the infrastructure is too poor and the road condition is worrying, so it has a preference for the busy two ends with good flexibility and mobility (guesswork). As for why excavators are so popular in China, I don't know why.This is a big aspect. From a small aspect, even small regional markets have different awareness and preferences for products of different brands. For example, in a county in Guangxi, the owner's favorite equipment is kanamoto (Kato) brand excavator. It is said that it is because the owner who started the project construction chose Kato's second-hand car, which is still very good, so it has an excellent reputation in the local area.Now considering another aspect, the formation of preferences is often based on a variety of factors, and it takes great efforts to reverse consumers' preferences, and there must be differences in pricing strategies. When a noodle restaurant opens in a university in the South and a university in the north, the operating pressure and potential consumption are different. To maximize the operating profit, it is necessary to consider adopting different pricing strategies. For example, a branch in the South should consider lowering the price to attract more guests to eat first, while in the north, it should consider whether it should appropriately raise the price to make up for business losses. After all, guests are unlikely to fly from the south to the north because a bowl of noodles is short of a few dollars.The same phenomenon exists in the construction machinery industry: take things we are familiar with for exampleThe consumption of excavators in China is so high, but the selling price is higher than that in most foreign regions. One thing that impressed me deeply was that once I chatted with a second-hand equipment supplier in Saudi Arabia and exchanged prices. He told me that the price of your old machine almost caught up with the price of our new machine.It is precisely because of this price difference that the expansion and development of Shenzhen's second-hand machinery market in the early years is inevitable. The market is such a wonderful place. As long as the price sends a signal, it will attract funds to find profits from the price difference. Just like the difference between the sales price of Apple iPhone in Hong Kong and that in the mainland, it will inevitably lead to a huge parallel market.At that time, the first stop for second-hand machinery sales was to visit Shenzhen second-hand machinery City. It was difficult to describe the surprise at that time. For the first time, I saw such a huge market with dotted stalls and all kinds of excavators known as original imported excavators. The price quoted by a good second-hand excavator is almost equal to the price of some brand new machines. In this way, production and sales are booming, and there is an endless stream of trailers. What impressed me deeply was that I chatted with my colleagues who went to learn scriptures at that time. I said with emotion: at least in the matter of selling machines to make money, original import is much more effective than Amitabha. With these four words, a device is like wearing a glow.The so-called original import mostly refers to the engineering equipment that is eliminated or updated by the Japanese construction industry and enters the domestic market through Hong Kong (most). Is the original imported equipment good? Of course, it's not good. The sales of tens of thousands of units a year are there. Why? There are different opinions. One is that the engineering equipment produced in Japan has high quality, sufficient materials and advanced technology, so its own quality is better than others. Of course, this statement is extremely unreliable. It probably regards neon country as the country that beat the world with lean production in the era of economic miracle. Take caterpillar as an example. Caterpillar has two factories in Japan, respectively in Akashi and Sagami (the location of Beitiao home town in the Warring States period). Most of the production lines of the two factories have been transferred to Suzhou, Wujiang, Luonan, Thailand and other places. If the products made there are really naturally proud and superior, I'm afraid they are unlikely to be transferred. Another view is that the operation of the construction industry in Japan is more standardized and the management is more precise and scientific than that in China. The annual operation time of the equipment is much shorter, and the maintenance and repair will be more timely and good. I think this statement is generally reliable and in line with the actual situation.When will this big market of "original import" not be so prosperous, it must be accompanied by the slow narrowing and even disappearance of the price difference of new machines. More specifically, it is the decline in the sales price of new machines of domestic excavators. Just as I love eating noodles, the decline in the sales price of the new machine comes from the open competition in the market. As long as there is an open market, steamed buns, steamed stuffed buns, pasta and rice are sold. The pressure of competition will always force operators to strive to improve their operation capacity, reduce costs and finally reduce prices. In this open market, it is best to have strong brands from home, such as the home appliance industry. In this era, few people will go shopping for second-hand home appliances of foreign brands. Gree, Midea and Haier have long been leaders in their respective fields.This scene of the construction machinery industry will come sooner or later.
Construction Safety of Earth Moving Machinery - Loader
Loader is a kind of earthwork construction machinery widely used in highway, railway, construction, hydropower, port, mine and other construction projects. It is mainly used to shovel soil, sand, lime, coal and other bulk materials. It can also be used for light shovel excavation of ore and hard soil. Changing different auxiliary working devices can also carry out bulldozing, lifting and loading and unloading of other materials such as wood.In the construction of roads, especially high-grade highways, loaders are used for filling and excavation of subgrade works, aggregate and loading of asphalt mixture and cement concrete stockyard. In addition, it can also push and transport soil, scrape the ground and pull other machinery. Because the loader has the advantages of fast operation speed, high efficiency, good mobility and light operation, it has become one of the main types of earthwork construction in engineering construction.Requirements for safe use of loader:01 general safety precautions(1) When operating the equipment, the driver shall wear a working hat and put long hair in the hat.(2) The loader driver shall work with certificate. It is strictly prohibited for the driver to drive after drinking or overwork.(3) The loader shall not operate on the site with large inclination angle or forming inverted suspension.(4) When the loader bogie is not locked, it is strictly prohibited to stand between the front and rear frames for maintenance.(5) After the loader boom is raised, before lubrication and adjustment, the safety pin must be installed or other measures must be taken to support the boom to prevent the boom from falling and hurting people.(6) All cooling water without antifreeze shall be drained in cold season. When replacing the cooling water with antifreeze, the cooling system shall be cleaned first; The preparation of antifreeze shall be 10 ° C lower than the local minimum temperature.02 precautions before loader operation(1) The loader engine shall not be started for more than 10s each time. If the first start is unsuccessful, it shall be started again after 1min. If the third start is unsuccessful, the cause shall be checked and the fault shall be found out before it can be started again.(2) Before the loader travels, lift the bucket to about 50cm above the ground, and keep the hydraulic piston rod of the bucket and bucket handle fully extended. Do not lift or overturn the bucket without reason during driving.(3) Before using the loader, check and ensure that the lighting of all lamps and display lights can be displayed normally. It is strictly prohibited to operate the equipment with defects.(4) Check and ensure that no one works under the vehicle or near the loader when starting the engine.03 precautions during loader operation(1) During excavation, umbrella eaves shall not be left on the face of the tunnel, and hard stones shall not be excavated.(2) Do not turn when pushing.(3) Loading shall be carried out at low speed, and loading shall not be carried out by slamming the bucket into the pile at high speed; When digging, the bucket should not be cut too deep, which should be controlled at 15 20cm.(4) When the loader is driving, the driving speed shall be controlled within 20km / h without sharp turning.(5) It is strictly prohibited to slide down the slope.(6) During driving, except for the specified driver, no other person is allowed to ride, and it is strictly prohibited to carry people or load with a bucket.(7) When the loader is running, retract the bucket, which is about 400 500mm away from the ground; Pay attention to whether there are roadblocks or high-voltage lines during driving.(8) Avoid sudden reversing when the loader is driving. When the bucket is lifted and driven with load, sharp turning and sudden braking are not allowed.(9) When the loader is driving on the highway, it must abide by the traffic rules and drive carefully.(10) If the engine stalls on an inclined slope, put the bucket on the ground, brake, put each operating lever in the middle, and then start the engine.(11) When shoveling soil, the loading capacity shall be determined according to the specific gravity of the soil on site, and the bucket shall be inserted from the front to avoid excessive bucket load and dumping during rotation.(12) After full load, pay attention that the stick should not rise too high. When loading the earth moving vehicle, do not allow the bucket to pass over the cab of the earth moving vehicle.(13) No one is allowed in the cab during unloading.(14) When loading the earth moving vehicle, the bucket shall be reduced as far as possible to reduce the unloading height to prevent eccentric load, overload and smashing the vehicle.(15) When discharging materials from slopes, trenches and pits, pay attention not to extend the bucket too far to avoid overturning.04 precautions after loader operation(1) When stopping the machine after operation, park the loader on a flat and solid ground, land the bucket, place all operating levers in the middle, and brake and lock.(2) It is strictly prohibited to park the loader at the edge of subgrade with unstable soil, slope with large gradient, in the environment with object strike or collapse, in areas with open fire or high temperature, or in places that hinder traffic.
If Animals Can Inflict an Infectious Bite on Humans, Can Humans Give Animals Infectious Bites, As We
The short answer is yes. You could feasibly give a dog rabies, for example, if you had rabies and bit itu2026 but there are a lot of caveats.Without getting too technical, letu2019s use a virus example for a more in depth look at the question. A real virus is very similar to a computer virus - itu2019s a tiny "ball" that has malicious information in it. That malicious information is in the form of RNA or DNA instructions. Of course, cells work by following their own RNA and DNA instructions, but the machinery inside cells really donu2019t have any means of telling virus instructions from its own instructions since theyu2019re chemically similar (they consist of four letters, just in a different order, analogous to how computers store information in two "letters" - 0 and 1).Since all cells for our purposes contain DNA and RNA, viral RNA/DNA work inside them in the same general way. Sometimes, differences in cell machinery mean that instructions donu2019t work in a given cell, but the big issue (besides immune systems and innate cellular defenses against viruses) is getting the instructions into a cell.Image source: https://marianuniversityscienceblog.wordpress.com/2012/05/08/1286/Note that this image glosses over the binding to the receptor. Every virus isnu2019t exactly like this (sometimes the entire virus enters the cell), and every virus doesnu2019t bother integrating its DNA into its hostu2019s.Fortunately for viruses, cells have many doors called receptors that are used for bringing ligands like nutrients inside. Viruses tend to trick these receptors into thinking theyu2019re the proper ligand. Itu2019s sort of like getting past a locked door with a fake ID. Unfortunately for viruses, receptors are very specific to a specific ligand. Even receptors that do the exact same thing (for example, importing lactose) may have different chemical properties from cell to cell and even from person to person. This is one reason way that some people are immune to HIV - HIV uses the CCR5 receptor to get into cells, and their receptor has a mutation that makes it not work.CCR5 receptor, courtesy of Wikipedia.Since virusesu2019 fake IDs only work on very specific doors and different species use different doors (receptors), viruses have a hard time jumping between species. Of course, if two species happen to have very similar doors, a virus may be able to infect both species (swine/avian flu for example). Again, just because a door is designed to let in a given ligand doesnu2019t mean that a virus can use every single door that lets that ligand in. These doors are very specific.Back to the original question, if the animal infected you the assumption is that it was infected itself (ex: rabid dog; note that there are animals like parasites that may transfer pathogens from host to host via biting without ever actually being infected themselves). At any rate, if the animal is capable of catching the virus, it has the same door into its cells that we do and the virus can use the same fake ID to get in.Two caveats. First, immune systems differ greatly between species. Rabies is a mild nuisance in its host species but usually fatal in humans. Second, just because thereu2019s a virus in a dogu2019s mouth doesnu2019t mean he has the virus. Maybe he licked something that was sick, ate a sick bird, etc.Bacteria and fungus work differently. They donu2019t typically need to actually enter a cell to make you sick; they have their own cellular machinery to process their DNA and reproduce. In this case, the question is really whether or not the bacteria is capable of growing inside the species in question. Various factors can stop that, such as a robust immune response, inappropriate pH, unsuitable ion concentrations, a lack of suitable nutrients, unsuitable temperatures, etcetera. A bacteria that thrives in the acidic stomach environment wonu2019t necessarily grow inside a mouth or on your skin, for example.As a result, bacteria (or fungi) that are normal occupants of a given speciesu2019 mouth may or may not be able to infect (grow inside) another speciesu2019 body. The result of all of this is that there are two general scenarios.Both species - man and biting animal - can get sick from the pathogen (disease causing microbe). In this case, if a sick person bites a healthy animal it will likely get sick.The microbe is pathogenic (disease causing) in humans, but not in the animal. In this case, a sick person biting the animal will not lead to the animal getting sicku2026 though the animal is likely to bite back!• Suggested ReadingWhy are Polish people from larger southern cities like Wroclaw, Krakow, Lublin, and possibly Warsaw so negative about Lech Walensa?I will explain it of a modern millennial perspective. As far as we know, the Solidarity movement was at its peak at 80u2019s and 90u2019s of XX-th century Poland. These were a trade unions, who by protesting elsewhere in Poland had managed to talk out a transition of Poland from the communist regime, into a parliamentary democracy we enjoy today. The main way to access a trade union, was to become a member of Solidarity. And Solidarity was present mostly within these cities and towns which had a large industrial sectors. Due to the way communists were planning industry, the biggest were Shipyards (Gdau0144sk, Gdynia, Tricity, Szczecin, towns at the shore of Baltic, mostly Pomerania), additionally these were Coal Mines (Katowice, Silesia), and machinery industry (Poznau0144, Toruu0144, Bydgoszcz, Radom), production industry (u0141u00f3du017a). Large groups of industrial workers of these businesses were the base for the Solidarity movement. This way you can easily spot, that "Solidarity" was a movement which was driven by mostly Blue Collars. If it comes to cities like Warsaw, Lublin, Kraku00f3w or Wrocu0142aw, they werenu2019t that much in trade unions, as either their industry was not of high density (they have only a fair amount of processing industry), and these particular cities mentioned in a question were a way more, totally into White Collar path, mostly by their large shares in academic, research, and primarily: services sectors. As you may understand, a Solidarity movement highly dominated by Blue Collars (Walesa was electrician) used to be hesitant to White Collar members, even if the trade union unit was coming from such an intelligent place as e.g. The University of Warsaw. These members had at start lower positions within the Solidarity movement, than ones from Shipyards or Coal Mines.Additionally, the outsider positions which Wrocu0142aw and Lublin had, often voting for White Collar representatives, had at the crucial times in 80u201390u2019s marginalized their political influence for a while. The trade unions have been here less popular, smaller or consisted of small enterprises, unlike in the Tricity (Gdau0144sk) which was the big center of the movement and was much stronger back then. The exception in the South may be the Silesia region, with Katowice, with its mining and smelting industry it was of high support to Solidarity, with strong trade unions and many Blue Collars. If it comes to Warsaw and Kraku00f3w, they have had also less of large industrial enterprises and mostly they were targetting in academic and service-based economies.Such cities are negative towards Lech Walesa, as he didnu2019t support white collars, and service-based cities as much, as he was even fighting them, by placing his own blue collar colleagues from Gdau0144sk/Pomerania on the election lists elsewhere in Poland.Walesa was reluctant to such an (intellectual) core members as Jacek Kurou0144, Tadeusz Mazowiecki, Jan Nowak-Jeziorau0144ski, Boronisu0142aw Geremek, they were the intelligence, a white collars of high regard in service-based cities like Warsaw, Kraku00f3w, Lublin or Wrocu0142aw. But seamlessly a minority in comparison to a bluecollar flood pf most of other cities. They represented the foundational ideas of Solidarity (so-called "PRE-August u201889"), the more human-oriented approach, highlighting the liberal values, diversity, inclusion, and a view of greatly reduced influence of Catholic Church on Poland. This is why in Lublin we celebrate "Lipiec u201880" (June of u201880) way more than "August u201889". We are closed to the core, we donu2019t agree with Walesa and his blue-collar-only narration.But once Walesa was aggrandized by communist leaders and blue collars in Pomerania, once he gained his Nobel prize, support from Church, he gained enough strength, to keep white-collars away from the movement, especially with "Sierpieu0144 u201889" (August of u201889) this is a date when his plan to "bluecollar-ize" a whole Solidarity was in biggest effect.The Solidarity has had many forks over the time since then, gradually white collars were let in, but it took a years of struggle, and today two of the biggest ruling parties (PiS - Law & Justice, and PO - Civic Platform) are noting more than right-wing conservative descendants of old blue-collar Solidarity. They both cooperate in order to keep their influence on Poland, even if the time of Solidarity has long gone. They assumed too much power.Fortunately, under the leadership of EU we are approaching a great time for the service-based economy cities in Poland, and hence such cities as Wrocu0142aw, Lublin, Warsaw or Kraku00f3w are gaining an edge in competition for IT businesses, Shared Services, and start-ups, the citizens there have mainly outsmarted other more industrial cities, the Solidarity and its trade unions are no longer in charge there. Itu2019s the market economy. Young people in Wrocu0142aw, or in Lublin are even more hesitant towards both concepts: Trade Unions and Solidarity, as it represents today ineffectiveness in management and assuming power for too long. Politically speaking, persons in IT, and most of White Collars, are not gathering around trade unions, as they understand it impacts the performance of their employers/enterprises. Young people are fed up with Solidarity, and its politicians. And that anxiety is shaped in a figure of Walesa. Solidarity and political influence stemed from Tricity (Gdau0144sk) is ending, slowly fading, now the market competition shall be in charge. We, the young, crave for innovation, we no longer respect tradition.Why are Polish people from larger southern cities like Wroclaw, Krakow, Lublin, and possibly Warsaw so negative about Lech Walensa?
Jianan Yunzhi, Who Focuses on the Mining Machinery Market, Is Planning to Land on the Science and In
Since the opening of the listing audit system of the science and innovation board, many enterprises have quickly impacted the science and innovation board after completing the listing guidance. Up to now, a total of 28 enterprises have entered the accepted state.It is learned from brokerage channels that Jianan Yunzhi, who focuses on the mining machinery market, is planning to land on the science and innovation board.Just two days ago, the first of the three mining giants, the mainland's impact on the Hong Kong stock IPO, failed. Four months ago, its competitor Jianan Yunzhi also suffered the same failure, and the application for Hong Kong stock IPO was invalid.Compared with bit mainland, Jianan Yunzhi's listing road is more tortuous. It has experienced three listing failures from a shares to the new third board and then to Hong Kong stocks.Despite repeated defeats, Jianan Yunzhi is still seeking listing opportunities. Just as the upsurge of listing on the science and innovation board is coming, Jianan Yunzhi has also become a generally optimistic company in the industry, and the war on the science and innovation board has also become a new direction.Listing road three times are broken halberdFounded in 2013, Jianan Yunzhi is committed to transforming from miner to bitcoin chip manufacturer, so as to seek the road to listing.Since the successful development of 28nm chips and 16nm chips in 2015 and 2016 respectively, Jianan Yunzhi conducted asset restructuring for landing a shares in 2016, trying to backdoor listing and becoming the first share of the blockchain.At that time, in June, Lu Yitong, which had been listed for one year and four months, planned to acquire all the equity of Jianan Yunzhi with RMB 3.06 billion. However, the performance bet between the two sides attracted the attention of Shenzhen Stock Exchange. Three months after receiving two inquiry letters in succession, the acquisition case was terminated.Since then, Jianan Yunzhi has been silent for 10 months. Sound the horn of listing again and seek listing on the new third board.According to the reporter of jiwei.com, when Jianan Yunzhi submitted the application for listing on the new third board, the disclosed performance data showed that the net profits from 2015 to 2017 were RMB 2.24 million, RMB 58.06 million and RMB 300 million respectively, with a 125 fold increase in net profits over the three years.Because of such outstanding performance support, after applying for listing, Jianan Yunzhi received multiple rounds of feedback and inquiries to explain its business logic and sustainable operation problems, and repeatedly involved the impact of the regulatory risks faced by the company on the future sustainable operation ability. In addition, the regulatory policies at that time emerged one after another.In March 2018, at a poor time point affected by multiple factors, Jianan Yunzhi gave up the new third board.It can only be said that Jianan Yunzhi was "untimely". After successive attempts to log in to a shares and the new third board failed, Jianan Yunzhi fell at the door of the Hong Kong stock market again.In 2018, the price of bitcoin suffered a Waterloo, coupled with the intensified supervision of bitcoin policy, with the profits and development prospects brought by the mining machinery business, it has been difficult to support Jianan Yunzhi to enter the Hong Kong stock market. In November 2018, Jianan Yunzhi's Hong Kong stock IPO application has expired.It is not unacceptable for the young Jianan Yunzhi to go public for three times. On the contrary, the more setbacks, the more courage. At a time when the application enthusiasm for the science and innovation board is high, the reporter of jiwei.com learned that Jianan Yunzhi is planning to log on the science and innovation board.It is said to break through the scientific innovation board againBetween the rapid rise and market fluctuations, Jianan Yunzhi's adaptability and acceptance are obviously unusual.Jianan Yunzhi, known as the world's second largest bitcoin miner, has also extended its tentacles to the field of artificial intelligence chips and actively worked in the field of artificial intelligence edge computing chips under the condition of indifference in miner business.According to the reporter of jiwei.com, Jianan Yunzhi cut into the field of AI chips and released its first generation of artificial intelligence chips on September 6 last year. Jianan Yunzhi is known as the world's second-largest bitcoin miner. Like bitcoin mainland's artificial intelligence chips, Jianan Yunzhi is also actively working in the field of artificial intelligence edge computing chips.According to Tianyan survey, since 2014, Jianan Yunzhi has completed four rounds of financing. Among them, the financing of 300 million yuan obtained in May 2017 has a market valuation of 3.3 billion yuan, and its investors are baopu investment, Jinjiang International and penglan investment.After entering AI chips, although Jianan Yunzhi has a market valuation of 3.3 billion, this value obviously can not meet the current needs.At the beginning of March 2019, Jianan Yunzhi confirmed to complete the round B financing amounting to hundreds of millions of dollars. Next, it will lay out in artificial intelligence and blockchain ecology, and take chips as the starting point to build a large ecological platform for artificial intelligence and blockchain.Behind this series of capital actions and business layout, or a new chip for Jianan Yunzhi to sprint to the science and innovation board. However, mining machinery companies and blockchain companies, in the final analysis, still depend on whether the company meets the positioning of the science and innovation board, whether the company has mastered the leading core technology, whether it has an efficient R & D system, whether it relies on the core technology to form strong growth, and more importantly, whether it can finally serve the market development.As a high-end industry, AI chip has a huge market prospect and greater technical challenges. According to market data, the global AI chip market reached US $2 billion in 2018 and is expected to exceed US $10 billion in 2020.In the face of huge market dividends, especially the sharp acceleration of competition among many AI chip manufacturers, coupled with the entry of many manufacturers such as Cambrian, Shenjian technology and horizon, Jianan Yunzhi, which started as a mining machinery service provider, is not easy to transform. Once it breaks through the scientific innovation board, the results are more worthy of expectation.
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