Operation requirements of hydraulic system for hydraulic excavators

The hydraulic excavator action complex, often need to start, brake, reversing, load change, shock and vibration frequency, and field operations, due to changes in temperature and the location of the larger, so in order to better adapt to the environment and operation of excavator hydraulic system, need to do the following:

1) to ensure that the excavator boom, bucket and bucket in the operation can not interfere with each other, but also can cooperate with each other.

2) the movement of the working device and the rotation of the turntable can be carried out separately and can act as a compound action to improve the productivity of the excavator.

3) the left and right tracks of the crawler excavator are driven respectively, so that the excavator is easy to walk, flexible to turn, and can be turned on the spot, so as to improve the flexibility of the excavator.

4) ensure that all the movements of the excavator are reversible and stepless speed change.

5) ensure the safe and reliable excavator work, and the implementation of components (hydraulic cylinder, hydraulic motor, etc.) have good overload protection; slewing mechanism and walking device has a reliable braking and speed limit; to prevent the boom due to self weight and rapid descent and the whole machine overspeed slope.

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