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The cleanliness of the oil in the hydraulic system is very important. Cycloid hydraulic motor The oil used shall maintain ISO cleanliness standard 18/13 based on SAEJ1165, and each milliliter of oil is allowed to be less than 2500 particles with a diameter greater than 5um and less than 80 particles with a diameter greater than 15um.

Maintenance of hydraulic oil.

For all hydraulic systems, it is important to maintain acceptable viscosity and cleanliness.

cycloid Hydraulic motor It is widely used and cannot cover all aspects. Field testing and monitoring is the way to obtain the accuracy of cleanliness.

The hydraulic motor cannot rotate.

The hydraulic motor is an actuator located at Hydraulic transmission The hydraulic energy is converted into mechanical energy to make the platform rotate.

The motor adopts axial plunger point contact medium speed hydraulic motor.

1. Phenomenon.

The platform speed is lower than 6r/min during operation.

2. Cause analysis.

The structure and working principle of hydraulic motor and axial piston pump are basically the same. The axial plunger pump generates electricity through oil suction and pressure, that is, converts mechanical energy into liquid pressure energy. The hydraulic motor enters the high-pressure oil and discharges the low-pressure oil, that is, the hydraulic energy is converted into mechanical energy. From this point of view, the hydraulic motor is essentially equivalent to the combination of multiple single cylinder plunger cylinders, that is, multiple one-way cylinders are evenly distributed along the circumference, and the outer end of the plunger is pressed against the swashplate. When the oil pump supplies pressure oil to the oil cylinder, the plunger extends under the action of the pressure oil and slides down on the swashplate to generate torque. Jh cycloidal hydraulic motor The oil pump continuously supplies pressure oil to the hydraulic motor, and the hydraulic motor continues to rotate, Conveyor belt cycloidal hydraulic motor The final drive gear is meshed with the fixed inner gear ring of the frame through the gear transmission box to drive the platform to rotate.

It can be seen from the above that the structure and working principle of the hydraulic motor are basically the same as those of the above hydraulic cylinder. If the hydraulic motor cannot rotate slowly, its analysis, diagnosis and troubleshooting methods are similar to those of the hydraulic cylinder and axial piston pump of the working device, and will not be repeated here. Refer to the above contents when analyzing, diagnosing and troubleshooting hydraulic motor faults.