At present, there are 3 kinds of hydraulic pumps commonly used on the market: gear pump, plunger pump and gear plunger pump.
Gear pumps are usually used in low-pressure, low-flow situations.Plunger pump is suitable for high pressure, large flow occasions.The gear piston pump has the advantages of both gear pump and piston pump, and has become one of the mainstream hydraulic pumps at present.
In general, the hydraulic pump of the excavator should be selected according to the following factors:
1.Working pressure
The highest working pressure in the excavator hydraulic system determines the type and model of the hydraulic pump.
2.Flow requirement
The hydraulic pump in the hydraulic system of excavator needs to meet certain flow requirements.In the selection, we must first measure the flow of the hydraulic pump, and choose the right hydraulic pump according to the flow.
3.Speed requirement
The speed requirement of the hydraulic pump is directly related to its output flow and pressure and other performance, and the appropriate speed should be selected according to the use environment and work occasion of the excavator.
4.Noise requirement
The excavator is noisy when working, and the selection of hydraulic pump should consider reducing noise and vibration.
In summary, the selection of hydraulic pumps for excavators needs to consider many factors such as working pressure, flow requirements, speed requirements and noise requirements.Choosing the right hydraulic pump can ensure the stability, reliability and work efficiency of the excavator.
