The working environment of excavators is extremely extreme, and there is always a large amount of dirt or dust entering the outside of the engine, which is full of unavoidable phenomena. In general, we should often check and remove dirt near the equipment, so that the temperature of the water temperature can be lowered more. It is also closely related to the normal operation of the fan, to check whether the transmission belt of the transmission system is loose, and the transmission belt is too loose or too tight, and the water temperature will rise rapidly.

In addition, it is also necessary to check whether there is wood covered by objects in front of the cooling tower, hindering the heat transfer flow, and the oil stains on the engine surface will also affect the heat transfer results. If the water flow is too low or the reservoir is leaking, care should also be taken during maintenance. If the water temperature is too high, check the water circulation system. When the water circulation system can work normally, you can feel the temperature of the tap water pipeline of the heat pipe radiator, and it is necessary to check whether the centrifugal pump works normally under the condition that the temperature is very different. Water, flowing water will also shrink, usually to clean the tank in time.

Low amount of remaining oil in the engine will also affect the water temperature, and the remaining amount of oil should be within the specified range. If the tank cover is damaged, the water temperature will also rise, because it is easy to form an intake at this time, and the water temperature will be higher. In addition, phenomena such as engine load or prolonged ignition can also cause excessive water temperature. Usually controlling the oil temperature can not only reduce the heat generated by the engine, but also indirectly reduce the heat absorbed by the coolant, thus slowing the rate of water temperature rise.

The materials excavated by excavators are mainly soil, coal, soil, soil and rock after pre-relaxation. From the evolution of construction machinery in recent years, the development of excavators is relatively fast, and excavators have become one of the most important construction machinery in engineering structure. Three important parameters for excavators are: working weight (mass), engine power and bucket capacity.

Generally, the common stalling faults of excavators are mainly as follows:

1, start difficult or unable to start. This phenomenon is mainly caused by the electrical system, which may be caused by insufficient battery power, starter failure, line failure and other reasons. If the battery fails, the battery should be charged in time to check whether its power and electrolyte reach the specified height. If the battery is found to be poorly charged or the components aged, it will be discharged. The second is the oil circulation failure. The fuel of the high pressure pump is transported through the low pressure fuel pipe under the suction of the injection pump and the fuel pump, and once the air enters the fuel pipe, it will produce air resistance, resulting in the blockage of the fuel circuit. Too little fuel, the vehicle is parked on a slope or driving, air will have a way to enter the oil circuit. It won't start at all.

2, the excavator to withstand the heavy load, the fire was extinguished. Under normal circumstances, if the excavator suddenly stops during construction and the flame goes out, these observations should be made. The first thing to look at is the oil circulation of the excavator. And check the diesel pump, check whether the injection length of the injection nozzle can be about 6 ~ 7cm. Then, it is necessary to check whether the engine is overloaded or overheated because the excavator engine has been running for a long time, and whether the self-defense function has been started. If the excavator stops, it is a circuit fuel failure. Equipped with oil-water separation cover. Stalling is a hydraulic problem caused by a mismatch between hydraulic pressure and engine power

Reasons for insufficient oil pressure of excavator:

When the clearance between the oil pump shaft and the bushing, the clearance between the gear end face and the pump cover, the tooth clearance or the radial clearance is too large due to wear, the pump oil volume is reduced and the oil pressure is decreased. At this time, the worn parts of the excavator should be replaced, and the inner plane of the pump cover should be smoothed so that the clearance between it and the gear end face can be restored to the normal range.

If the flat key between the drive gear and the drive shaft of the oil pump is damaged or falls off; If the filter is damaged, the oil pump will absorb foreign matter, the gear will get stuck, causing the oil pump to stop and the oil pressure to zero. The damaged flat key or filter should be replaced at this time.

If the amount of oil is insufficient, the amount of oil in the oil pump will be reduced or the oil cannot be pumped due to air entry, thus reducing the oil pressure, and increasing the crankshaft and bearing, cylinder liner and piston. Poor lubrication leads to wear. Therefore, the oil level in the oil pan should be checked every day before work to ensure that the oil level is normal. If this is not enough, the same type of oil produced by the same manufacturer should be added.

If the engine cooling system scaling too much, poor heat dissipation, long-term overload operation or fuel injection pump oil supply too late, will lead to engine overheating, resulting in oil aging, wear, thinning. Leaks from each joint gap and causes pressure to drop. The scale must be removed, the timing of the oil supply adjusted, and the engine must operate within the rated load.

After the engine is used for a long time, the matching clearance between the main crankshaft and the connecting rod bearing gradually increases, the leakage increases, and the oil pressure decreases. The pressure decreases to 0.01MPa when the fit gap increases by 0.01mm. At this time, the crankshaft can be grounded, and new connecting rod bearings and main bearings can be selected to restore their matching backlash.

External leakage will contaminate the engine surface, resulting in a drop in pressure; Internal leakage can cause oil to enter the tank, the cooling capacity of the cooling system is poor, the engine overheats, the oil is diluted, and the pressure drops. Remove the radiator and repair or replace it to restore its function.

Excavators need to dig and move the soil when working, but if the soil conditions are poor, such as too wet or too dry, it will affect the work efficiency of the excavator. Soil that is too wet will make the excavator Mired in mud and difficult to move, while soil that is too dry will make it difficult for the excavator to dig.

Excavator is a kind of mechanical equipment, long-term use and wear will lead to mechanical failure. For example, hydraulic system failure, electrical system failure, engine failure and so on. These failures can result in excavators not working properly, requiring maintenance and replacement of parts.

The operation of the excavator requires professional training and authorization, if the operator has not received professional training or improper operation, it will lead to problems in the excavator. For example, improper operation may result in mechanical failure, accidents, etc.

Excavators need to consider environmental factors when working, such as weather, terrain, and surrounding buildings. For example, bad weather such as strong winds and heavy rain will affect the work efficiency and safety of excavators. Factors such as uneven terrain and dense surrounding buildings will also affect the work of excavators.

Excavator is a kind of heavy machinery equipment, if improper operation or poor environmental factors, it will lead to safety problems. For example, the excavator rollover, rolling, impact and other accidents may occur. Therefore, when the excavator is working, it is necessary to strictly abide by the safety regulations to ensure work safety.

In short, excavators may have a variety of problems when working, requiring operators to have professional skills and experience, but also need to consider environmental factors and safety issues. Only by doing these aspects of work well can we ensure the normal work and safe operation of the excavator.

Excavator is a kind of heavy machinery equipment, often used in earthmoving engineering, mining, construction and other fields. However, during the use of excavators, oil leakage often occurs, which will not only affect the work efficiency, but also cause pollution to the environment. So, what causes the excavator to leak oil?

First of all, the reason for the oil leakage of the excavator may be due to the problem of the machine itself. For example, the machine seal is not tight, pipeline aging, oil seal wear, etc., may lead to oil leakage. In addition, during the use of the excavator, it may also suffer from external impact, wear, etc., resulting in damage to the machine parts, resulting in oil leakage.

Secondly, the cause of the oil leakage of the excavator may also be related to the use of the operator. For example, when using an excavator, the operator may overuse the machine, causing the machine to overheat, which can cause oil leaks. In addition, when using the excavator, the operator may also ignore the maintenance of the machine, resulting in aging and wear of the machine components, resulting in oil leakage.

In view of the problem of oil leakage from excavators, we can adopt the following solutions. First of all, for the problem of the machine itself, we need to timely repair and replace parts to ensure the sealing and stability of the machine. Secondly, for the use of operators, we need to strengthen training and management to ensure that operators use the machine correctly and carry out maintenance in accordance with regulations.

To sum up, there may be many reasons for the oil leakage of excavators. We need to start from the two aspects of the machine itself and the operator, and take appropriate solutions to ensure the normal operation of the machine and the protection of the environment.

The size of small excavators is much smaller than that of large excavators, which makes it flexible to operate on small sites. At the same time, the small size of the small excavator also makes it more convenient in transportation, and can be transported by small trucks or trailers.

The scope of application of small excavators is very wide, can be used in urban construction, road construction, landscaping, agricultural production and other fields. It can carry out a variety of different work such as digging, shoveling, leveling, piling, etc., which can meet the needs of different fields.

In short, the small excavator has the characteristics of small size, light weight, high flexibility, wide application range and so on, and is a very practical construction machinery. In the future development, small excavators will receive more and more attention and use.