In addition, a thin film coating is prepared on the outer surface of the hydraulic pump, which can reduce wear and maintain smoothness. This kind of friction pair is made of soft and hard matching. Once the coating is replaced manually, the friction pair matching the data will be destroyed. To repair these additional piston pumps, they must be sent to the repair shop.

Shoes and swashplate.

The sliding friction between the slipper and the swashplate is one of the three pairs of friction pairs of the swashplate piston pump.

The clearance between the ball head of the hydraulic pump and the ball seat of the slipper. If the clearance between the plunger and the slipper is different, the high-pressure oil in the plunger cavity will leak out from the clearance between the plunger ball head and the slipper, and the oil film between the slipper and the swashplate will become thinner. In serious cases, the hydrostatic bearing fails, metal contact and friction occur between the slipper and the swashplate, the erosion of the slipper decreases, and the swashplate of the plunger ball joint is damaged. The ball head of the plunger rod and the ball seat of the slider are not within the same tolerance range, so they should be replaced in groups.

After the piston rod acts on the swashplate of the cylinder column for a period of time, the swashplate plane will be concave. Advantages of cycloidal motor Before selecting the grinding path, the initial specification and surface hardness shall be measured. After grinding, measure the grinding amount, Quotation of cycloidal motor If it is within 0.18, it shall be used for plunger pump; If it is more than 0.2mm, nitriding shall be adopted to maintain the original thickness of nitrided layer.

When the plane of the swashplate of the hydraulic pump is scraped out of the groove by the plunger ball head, it can be modified by laser cladding alloy powder. Laser welding technology can not only connect data, ZS cycloidal motor The hardness of data can also be supplemented without completely reducing the hardness of surrounding tissues.

Chromium electrode is also used for manual surfacing. The repaired swashplate plane needs to be heat treated from scratch, and the nitriding furnace is used for heat treatment. No matter which method is used to reform the swashplate, it has standard precision, hardness and surface roughness.