Network optimization information:

Hydraulic motor crawling

1. Phenomenon.

The platform stops suddenly when rotating, that is, the rotation is discontinuous. Slow speed, insufficient strength, etc.

2. Cause analysis.

The hydraulic motor is an energy conversion device that inputs liquid pressure and converts mechanical energy output, Cycloidal hydraulic low-speed motor If the efficiency of the pressure motor itself is not considered, the energy input should be equal to the output. Therefore, the weak rotation of the hydraulic motor must be the reduction of the energy input to the hydraulic motor. When the energy is difficult to overcome the rotating resistance of the platform, the rotation stops.

according to Hydraulic transmission Principle: hydraulic motor rotates through hydraulic pressure. When the hydraulic motor stops running when the pressure oil circuit of the control valve is opened, it must be that the oil working pressure input into the hydraulic motor plunger cylinder is not enough to overcome the running resistance of the platform and stop running. When the accumulated energy fully overcomes the resistance, the hydraulic motor jumps over the resistance, the oil pressure in the system drops sharply, the motor stops, and the platform crawls repeatedly, or the resistance preventing the rotation of the hydraulic motor is too large and crawls. Cycloidal hydraulic motor pressure As for the reduction of input hydraulic fluid flow and working pressure, please refer to the cause analysis and diagnosis of slow lifting of boom cylinder.