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Excavator parts purchase Note

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cavator-parts-192/">excavator parts purchase Note:
1, to pay attention to the see Yantai excavator parts of the specification model. Specification models in the purchase of excavator parts, to observe compliance with the requirements. Looks almost the same, but little attention to buy back can not be used.
Products, depending on whether the Assembly mark the qualified assembly marks are very clear, obvious example gear assembly mark, the piston at the top mark should be intact and clear.
3, depending on the product cracks. Counterfeit products from the appearance view, the finish would be less, but there will be obvious cracks, sand holes, slag, burrs and other defects, which would easily lead to oil spills, leakage, air leakage and other faults.
4, accessories depends on the availability of loose, catching qualified products and flexible rotation assembly components, the gap size standard. Shoddy products are not too loose, that is, rotation is not flexible.

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PC220 5 excavator main pump control system debugging

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Komatsu PC220-5 excavator main pump control system by the closed valve NC, the composition of the cut off valve CO, as well as the constant twisting valve TVC servo valve. Closed valve NC is the outlet pressure of Pt for the sensor (Pt-Pd) signal to control the main ring to the valve opening by the jet sensor to detect pressure difference (Pd inlet pressure), due to the throttling effect of the NC valve so that the output control pressure Pecn change so as to control the pump to displacement; cut off valve CO single-pump regulator is used on the main pump. Close to the main relief valve to set pressure when the load pressure of the main pump outlet valve from the throttle effect, thereby reducing the displacement of the pump, so that the overflow power loss is reduced; the role of the constant twist valve TVC is through throttle control role to two of the main pump displacement control, namely the regulation of the total power, so that the matching of engine and hydraulic pump power at its best, the engine s effective power to be fully utilized; servo valve to accept from NC valve, promote the servo piston action on CO valve, TVC valve control signal to control the pump swash plate angle, the displacement of the pump attendant changes.
A main pump, the debugging of the pilot pump pressurepipe fitting suppliers
Are two range 60MPa pressure gauge connected to the two main pumps at the exit, the maximum working pressure monitoring system (ie, the main safety valve set pressure). The valve set pressure should be 32.5MPa, if not reflected in the allowable range (see table), you should loosen the lock nut on the main pump corresponding to the main valve, pressure increases in the clockwise rotation of the adjusting screw counterclockwise rotation of the pressure decreases, the adjustment screws every turn pressure changes of about 12.8MPa.
Connected to the pilot pump 6MPa gauge at the exit will be a range, start the engine, measured in the high idling pilot pump working pressure of 3.2MPa. If not in the allowable range, you should loosen the lock nut on the pilot pump safety valve, pressure increases in the clockwise rotation of the adjusting screw counterclockwise rotation when the pressure decreases, each turn one week the pressure is about 0.45MPa.
2, the CO valve, the NC valve output pressure debugging
(1) the CO valve, the NC valve on the main pump only a single pump regulator, so you can debug before the pump, and then debug the pump. 6MPa gauge with a range connected to the NC valve at the exit, two ranges are 2.5MPa pressure gauges were connected to the front of the jet sensor, rear pressure point.
(2) First, to test pressure (Pt-Pd) values ​​of the jet sensor. When the operating handle on the machine in the median, the differential pressure (Pt-Pd) 1.6MPa; when walking the operating handle placed the end of the trip (Pt-Pd) values ​​should not be greater than 0.2MPa. Jet sensor on the relief valve is not the main control valve on the locking nut clockwise rotation of the adjustment screw will make the pressure rise, counterclockwise rotation causes the pressure to reduce per revolution changes in the pressure of a week is about 1.66MPa.
(3) CO valve debug: operation of the main control valve of the main pump unloading, the CO valve action (throttling), the NC valve does not work, the NC valve output pressure should be less than 0.55MPa; not in this range should loosen the lock nut on the CO valve (clockwise rotation adjustment screw pressure, pressure to reduce counterclockwise rotation) per revolution changes in the pressure of a week is about 014MPa.stainless steel pipe fittings
(4) debugging of the NC valve: the main control valve operating handle placed in the CO valve does not work, the NC valve action, the NC valve output pressure should be not more than 0.7MPa; do not meet, should be loose open the lock nut on the NC valve, pressure can rise when the clockwise rotation and counterclockwise rotation, the pressure is reduced, each revolution pressure changes of about 0.43MPa.
(5) Repeat checking the output pressure of CO, NC valves. Support from the pump corresponding to the side of the crawler and to do the full speed auto-rotation (CO, NC, valve no action), CO, NC, valve output pressure of 1.6MPa, not within the allowable range, should repeat the above CO NC valve debugging. Of CO, and then another main pump NC valve debugging.
TVC valve output pressure of the debugging
On a range 6MPa pressure gauge at the exit of the TVC valve, start the engine idling, the operating handle on the machine all placed in the TVC valve outlet pressure of 2.1MPa; the operation of the main control valve so that a main pump unloading, the output of the TVC valve pressure is 1.5MPa. Such as outside its allowed range, you should adjust the TVC valve (loosen the lock nut on the TVC valve pressure adjustment screw clockwise rotation, counterclockwise rotation of the pressure decrease in the adjustment screw to adjust the screw per revolution of the pressure changes is 0.35MPa).
4, the debugging of the servo valve
If these pressures are normal, and the whole work does not match will have to be measured before and after the pump servo piston, and the servo valve to adjust.
(1) measurement tool. Prepare a servo piston cover (the side of the end of the line of the spring) and a dump truck brake wear measuring instrument. Then, in a prepared power wire of the center of the servo piston cover (1/4 "), the measuring instrument is mounted on the cover.sanitary pipe fittings
(2) Remove the pump (or after the pump) servo piston cover (with the spring end of the line), the measurement tools installed.
(3) in the state of the engine shutdown meter putt to tear down the bottom, measuring the servo piston stroke.
(4) will be equipped with the first pump of the measuring instrument (or after the pump) corresponding to the drive track from and its high-speed idling, measure the servo piston stroke, the standard value of this trip should be 7.22mm. Not in conformity with the adjusting screw lock nut should loosen the servo valve (near the end of the line servo piston), can make travel in the clockwise rotation of the adjustment screw is smaller, the pump displacement is smaller; counterclockwise rotation of the adjustment screw the itinerary change, the pump displacement also become large. The same time, check the mobile measuring instrument measuring rod is smooth; travel lever stroke with good. It is set according to the above steps, then another debugging of the main pump.

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mill in what material is the best?

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Customers before the purchase of the mill equipment, many aspects of the Federation of Consulting, in the final analysis, still want to buy into a suitable and good quality equipment of the mill, and then choose a different mill equipment material, and also determines the ultrafine the quality of the mill equipment, mill durable is the ultimate pursuit of customers, mill equipment companies only give full consideration to the needs of users, user satisfaction of the mill companies to be able to develop long-term.
 
Each mill equipment business knows, the correct choice of the mill material of great help to enhance the quality of the equipment, according to the structure of the mill to select what kind of process to choose what size and type, including the use of life are asked to consider, seismic equipment, equipment corrosion resistance. For example, a large mill need to use thicker steel.

The enterprise is the pursuit of value, considering the performance at the same time, and then with the most reasonable accessories. Such as the relatively low price of carbon steel and low alloy steel, steel is the foundation to support the entire mill, If you cut corners must be worth the candle, so that enterprises suffered losses. In addition, the bearing support is also one of the devices of the mill, its performance also play a key role, high-quality bearing and low-quality bearings, mill rotation speed certainly different, the speed of wear is also greatly different.

Purchase of mill not only look at price, quality is the most important, the material of the mill good or bad to determine its quality, customers in the purchase of limestone mill, be sure to shop around, so buy the mill powder machine for you to create greater efficiency!

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milling machines to a huge market space for the development of cement industry

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To  use professional equipment and technology, and accumulated many years of experience in R & D and production according to the slag, slag, blast furnace slag and other characteristics of R & D to create a new type of slag mill – Fly Ash Mill, in accordance with these industrial solid waste The matter of potential hydraulic high, high yield and low cost become the preferred mix of materials for cement production.

Iron and steel slag, for example, data show that, at present, the Chinese iron and steel slag resource is about 300 million tons, new students each year 84 million tons of steel slag, which slag is about 2900 tons of blast furnace slag is about 55 million tons, you can know The slag can be used in many fields related equipment for deep processing.

In addition, I had in recent years attached great importance to environmental protection and energy saving issues, and calculated according to the cement production process, to produce 1 ton of Portland cement, it is necessary to emissions of about 1.1 tons of carbon dioxide in the atmosphere, the use of steel slag powder, carbon dioxide Maximum formation of only 100Kg / t, which means that the concrete production process, each with one ton of steel slag grinding powder instead of 1 ton of Portland cement, it means that atmospheric carbon dioxide reduction of about one ton. Therefore, iron and steel slag used in building materials industry, which saves a lot of natural resources, protect the environment is an important way to develop a recycling economy.

As we all know, the cement industry is an important pillar of our industrial economy, with resources of our country in international competition, market and technology advantages of an industry has good prospects for development. Although due to overcapacity, mergers and reorganizations, power cuts and a series of questions lead to the cement market downturn, however, the new town planning, the new district protection of housing construction, water conservancy investment, transformation of villages, high-speed rail, highways, railways and other infrastructure The construction is undoubtedly a huge market for the cement industry.

Since the \"12th Five-Year Plan, the state has increased recycling efforts, waste of resources and industrial waste slag, fly ash, Collie Rick ultrafine milling machine, used for production of cement filler, improve the workability of the concrete mixture; reinforced concrete pump; reduce the creep of concrete; reduce heat of hydration, thermal expansion; improve impermeability of concrete; to increase the concrete to modification.

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the Vico Heavy: mill industry to illuminate the construction of new energy to the development of innovative road

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              The larger with the higher the level of people\\ s lives, the amount of waste generated, to produce large amounts of urban construction waste, urban per person per day increase in rubbish amount of 1-2 kg, the amount and composition with the residents of material standard of living, habits, waste material recycle more, the municipal buildings. In response to the national environmental policy called for solid waste disposal is particularly important, the mill has become indispensable to today\\ s solid waste disposal equipment, it is that is, cone crusher, impact crusher, sand making machine after the fine grinding equipment The mill can be said that today\\ s stone paper, paint, grinding, and other ores, non-metallic ore crushed the best equipment.
     Similarly, in the field of industrial production, the use of the ore powder is more and more, the main source of ultrafine powder material is metal and non-metallic mineralization, as well as some other organic compounds, zinc oxide, molybdenum powder, magnesium and other metal mineralization ultra-fine powder, like kaolin powder, talc, fluorite powder, gypsum powder, bentonite powder, non-metallic mineralization ultra-fine powder. Proposed to respond to national energy development program, the Vico Heavy Industry Machinery Co., Ltd. as the well-known manufacturers of mining machinery, will continue to build a resource-conserving, environment-friendly society, China has proposed for the realization of energy saving and recycling economy goal to make its due contribution to this, we will increase R & D force, manufacturing design more cost-effective investment in the development and construction of new energy sources, provide for the development and construction of new energy technology.
In a competitive market torrent, Vico Heavy brushed aside the heavy fog, the development of their own advantages, the introduction of advanced technology on the basis of the original Raymond, technological innovation, the introduction of YGM high pressure micro powder mill, HGM tricyclic micronized milling machines and other types of powder equipment, the mill\\ s production process is a high degree of compliance with long-life, low energy consumption and reduce the weight of design principles. High yield, high-quality, low energy consumption is the development objectives of today\\ s mining machinery, mining machinery, technological innovation performance improvement services equipment, thereby increasing the cost of the products, technological innovation must have goals. Vico is willing to build a resource-saving and environment-friendly society to assume their responsibilities.
  

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grow slime dryer bearing life

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         As we all know, the operation of the bearing charged with slime dryer load. Good lubricating slime dryer bearing life has a great relationship, it directly affects the life and operation rate of the slurry dryer, thus requiring the slime dryer bearings injected lubricant must be clean , the seal must be good. Next, the capacity of technicians lubrication grease at the slime dryer and bearing maintenance knowledge for everyone to do a full description.

        Slime dryer oiling at four o\\ clock, they are: (1) rotating bearing; (2) roller bearing; (3) All gear; (4) activities bearings, sliding plane. Slime dryer machine maintenance measures following six.

        (1) the newly installed tire prone to loosening must often be checked.

        (2) full attention to various parts of the slime dryer is working properly.

        (3) pay attention to check the degree of wear of the wear parts, and pay attention to the replacement of worn parts.

        (4) found that the bearing temperature rise should be eliminated immediately stop checking reasons.

        (5) Turn the gear in the running if the impact of sound should be immediately stopped to check and eliminate.

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the general principles of internal combustion forklifts schematic

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  Variety of forms, the installation location of different composition and complexity of the various models of electrical

equipment, wiring, there are differences, but they all have the following a few common characteristics:

    1, the majority of devices on the internal combustion forklifts with single-wire system analysis of the circuit schematic,

electrical equipment along the circuit check circuit switches, protection devices, positive power supply. As constituting

the circuit, the electrical equipment must not lose sight of the appliance itself Poor Ground failure caused by grounding,

troubleshooting.

    2, electrical equipment circuits are connected in parallel and are subject to the control of the switch, the control mode

is divided into control of the power cord and the grounding line.

    3, two power supplies on the internal combustion forklift accessories , generators and batteries are connected in parallel during a

current meter or circuit protector.

    The voltmeter must be parallel in power at both ends, the timing of the voltmeter to work shall be subject to the control

of the ignition switch or power switch.

    5, in order to prevent damage due to short circuit or grounding lines or electrical equipment, all in an electrical circuit

with the circuit protection device.

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JAC Heavy heavy attack, pushed new the CPC42 type of internal combustion forklifts

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Following years after the new CPC (D) 38 internal combustion forklift trucks grand release, JAC Heavy Industries once

again attack, the official launch of another new CPC42 internal combustion forklifts.

The new model is JAC Heavy In conclusion, the market demand and internal departments to improve the views of an

independent R & D completed its core technology has been applied for patent in the homogenization of an increasingly

competitive market can be described as inventive, and fully meet customer differences of demand. New cars have high

power, high torque engines, high efficiency, energy saving and environmental protection; high intake, dual air filter,

intake design, but also conducive to the protection of the engine; five variable speed gear shift feel comfortable, a total of

eight aspects of technological advantages, the new car in the comfort of vehicle handling and safety have been greatly

improved to meet customers\\ easy to use, durable demand.

JAC Heavy CPC42 new internal combustion forklift fork extenders listed release is undoubtedly a bold attempt and innovation, to

prove the JAC Heavy Industries, both technology and quality have reached the level of industry leading companies,

show the the JAC person \"self-improvement, learning and innovation\" the spirit of the new Red Army. I believe that in

2012, JAC Heavy Industries must be able to achieve remarkable results.

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How to understand the forklift, stacker of the load center distance

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 Load center distance

    Simply means that the goods cross on goods from the center of gravity position. For example, the fork length is 1

meter, then the load center distance is 0.5 meters. And so on, 1.8 m long forks, load center distance of 0.9 meters. If the

pork on a skewer with 1 meter of the cargo of goods from the length of 1.8 m, the center of gravity of the cargo at 0.9 m,

then so is very dangerous. Dumping is likely to be!

    Another point is that electric forklift is generally counterbalanced by leveraged the original to enhance cargo. For

example, the standard 3-ton electric forklift with 1070mm forks, load center distance is half the length of the fork

position, which is 535mm at. If the cargo length is less than in 1070, to increase three tons of goods is no problem.

However, if the cargo length is 1.6 m, the center of the cargo is in the location of 0.8 m, then beyond the position 26.5cm

electric forklift towing attachments load center distance of 0.535 meters, in accordance with the leverage projections at this time if the goods

are of three tons , then 3 tons electric forklift is more difficult. Is likely that the rear part of the electric forklift because the

weight of the goods and tilt.

    This reason the pressure scales like weights, small weights, but the pressure jin jin, because of its torque is

relatively long.
This load center distance of the principle also applies to the Electric Stacker. Because most of the Electric Stacker are

the supporting leg, that is, below the fork supporting leg. This design can extend the fulcrum of the vehicle forward, hold

the same weight of goods at the same time, can also reduce the size and weight of the body.

    Counterbalanced electric forklift or Electric Stacker, a little overweight or cargo center of gravity away from the front of

the load center is not a big problem. I am talking about is a little bit. However, Stacker, Stacker weight light, so if you

exceed the given load cargo center migration or upgrade, it may cause instability and collapse. Therefore, the working

forklift to remind you when using forklifts require extra attention.

    Semi-electric stacker, manual hydraulic stacker. Because the body itself weight lighter, also two to three hundred

kilograms, if the upgrade one tons, and even two tons of cargo, combined with the center migration, the dangers are too

great.

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Boot the reasons of beam jitter

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Sometimes the laser cutting machine in the boot after the beam jitter may cause this problem the following reasons:
A machine on the existence of obstructions or tensioning wheel loose.
2 motherboard parameters reset detection polarity setting is incorrect.
3 timing belt, bald, hair tube, towline stuck.
4 rail dust too much time to clear the dust plus lubricant to the slider.
The gap of the slider is too large, need to replace the slider.
6 beams serious offset to both sides of the bearing wheel damage.
7 line of the motor and drive link is bad.
8 motor or drive failure.
Motherboard failure.
 

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