With the development of the construction industry, telescopic arm excavator has been widely used. However, in the course of its use, we often encounter the walking deviation of the excavator's elongated arm. How can this phenomenon be caused?
1. Failure of hydraulic pump
In most cases, telescopic boom excavator adopts double-pump structure. In many cases, running deviation is a pump failure. Here we give you a little skill: adjust the two tubing of the hydraulic pump, if the original slow becomes faster, the original fast becomes slower, which means the failure of the hydraulic pump.
2. Safety valve leakage
In many cases, the leakage of the safety valve will cause the internal pressure of the telescopic arm excavator to decrease, resulting in insufficient speed of the driving motor, resulting in running deviation. The solution is to replace the damaged motor safety valve.
3. Spring softens
Assuming that the spring in the main valve of excavator becomes soft or broken, or the valve core is stuck, the oil pressure will also be reduced and the running deviation will occur. To check the pressure of the main valve oil circuit regularly, the normal value is 32.5 Pa. If the main valve is damaged, it should be repaired or replaced.
Nowadays, as an important construction machinery, excavator elongated arm has been widely used in many projects. However, in most cases, excavator elongated arm works in many complex terrain. It is unavoidable that crawler fall off and damage occurs. What is the main reason for the damage of excavator elongated arm crawler? From the following five aspects for you to make explanations.
1. Driving on rough roads
The working ground of many excavators'elongated arms is pitted and hollow. The bad construction environment causes the weight of excavators to tilt when they are walking, resulting in excessive local pressure, which in the long run will cause the loosening of the track.
2. Improper operation in turning
The turning of the excavator's elongated arm is a great test to the construction personnel's operation level. The large rotation of the excavator is easily hindered by the protrusions on the ground, which will jam the track on the rotating side and cause track damage.
3. Long-term fatigue work
Like people, excavators need rest for a long time, can not work long fatigue, too little work time will cause great damage to the track, but also affect the service life of machinery, so excavator elongated arm operation also has a limit.
4. Failure to clear sand and gravel in track in time
When using the extended arm of excavator to operate, some sand and gravel will inevitably be stuck in the track. If not handled in time, the track of excavator will be loosened, and even the track will be broken seriously.
The above four points are the causes of the damage or breakage of the crawler of the excavator's elongated arm. In order to ensure that our excavator's elongated arm has a long service life, we should pay attention to the above points in our construction and do a good job in the daily maintenance of the excavator.