Low speed and large torque Hydraulic motor The basic knowledge and performance of the crankshaft connecting rod type low speed large torque hydraulic motor is mainly used for mining engineering construction machinery equipment, overweight conveying equipment, super heavy metallurgical equipment, crude oil mining equipment, shipbuilding deck machinery equipment, CNC lathe, light industry, plastic machinery equipment, In the hydraulic transmission control system of various mechanical equipment such as geological environment drilling equipment. In particular, it is mainly used for screw drivers of injection molding machines, Hoisting gear , drum drivers, drivers of various slewing mechanisms, crawler chassis and wheel traveling mechanisms, and other drive system mechanical equipment. The external five-star crankshaft connecting rod type low speed large torque hydraulic motor has the following basic knowledge and performance:

1、 Performance

1. Large starting torque (starting mechanical efficiency is above zero point nine), good low speed stability, and stable operation at very low speed.

2. The space between the curved rotor and the moving rod is supported by roller bearings, which has high mechanical efficiency.

3. It has a high power mass ratio and a small relativity of volume and weight.

4. It has an eccentric shaft and a five piston mechanism with low excitation frequency, so it has the characteristics of low noise.

5 The plane compensated valve distributor has good safety and reliability, less leakage, and the piston and cylinder hole are sealed by plastic piston rings, so it has high volumetric efficiency.

6. The rotation direction can be reversed, and the outgoing shaft is allowed to bear radial and axial external forces.

2、 Corresponding basic knowledge

Low speed and large torque hydraulic motors are used more and more. You should master some basic knowledge

1. Extreme working pressure refers to the extreme working pressure at the inlet, and continuous working pressure refers to the operating pressure difference

2. The hydraulic motors cannot run together under extremely high working pressure and rotating speed

3. Under the condition of intermittent 1 operation, the operation duration shall not exceed 10% per minute,

4. It is recommended to use 68 # anti-wear hydraulic oil with viscosity of 37 - 73 cSt and oil cleanliness of ISO18/13.

5 The temperature of extremely high operating oil is 80 ℃.

6. Before overload operation of hydraulic motor, the running in period shall be 1 hour below 40% of extremely high working pressure.

7. The hydraulic motor allows extremely high back pressure of 10 MPa, but it is recommended not to be higher than 5 MPa. If it is higher than 5 MPa, it should be connected to a leaking oil pipe.