The main component of the plunger pump is the bearing. Assuming that the bearing has a backlash,hydraulic pump the normal vacancy of the three pairs of friction pairs of the hydraulic pump will not be possible. At the same time,hydraulic pump it will also damage the thickness of the hydrostatic support oil film of each friction pair and reduce the service life of the plunger pump bearing. . According to the materials supplied by the hydraulic pump manufacturer,hydraulic pump the average service life of the bearing is 10000h. This value requires the disassembled bearing. The clearance of the bearing cannot be checked without checking the instrument. You can only choose visual inspection. If there is a scratch or discoloration on the surface of the column, it can be replaced.
The hydraulic pump is the power source of the hydraulic system of the excavator. It is an energy conversion device that converts mechanical energy into hydraulic energy. In the hydraulic excavator, the hydraulic pump is also a component with many shortcomings,hydraulic pump and once the hydraulic pump has a shortcoming,hydraulic pump it will immediately affect the normal operation of the excavator's hydraulic system to the point where it cannot work. Among the common disadvantages of gear pumps, most of them are caused by the wear of their conflicting pairs. The normal wear and tear causes radial and axial vacancies (ie, section vacancies), which aggravates the internal leakage of the gear pump. In severe cases, the pump hole or the two end plates cannot be corrected. In addition, the shaft seal is also a frequently damaged component.
The vane pump is different from the gear pump, its normal wear is small,hydraulic pump and the parts have a long service life. The disadvantage of the vane pump is oil pollution. This is because the motion pair of the vane pump is more precise. When the contaminants enter the conflict pair, it will get stuck or worn out. In addition,hydraulic pump the self-priming gear pump of the vane pump is a small displacement vane pump, so whether the oil is cleaned or sucked are two questions that need to be paid attention to in the operation of the vane pump.
The disadvantages of the radial piston pump in the piston pump in terms of structure and motion function are that the radial force is large, the self-priming is poor,hydraulic pump and the cooperation precision between the piston and the piston hole is high;hydraulic pump the components of the axial piston pump High processing precision is required. Therefore,hydraulic pump the cleaning degree of the plunger pump is higher than that of the gear pump.