NHMhydraulic motor

NHM series hydraulic motors are mainly used in plastic machinery, light industry machinery, metallurgical machinery, mining machinery, lifting and transporting equipment, heavy machinery, petroleum and coal mining machinery, ship deck machinery, machine tools, plastics, geological drilling and other machinery hydraulic transmission system, especially suitable for lifting winch, drum machinery, all kinds of rotary machinery drive

1. Adopt eccentric shaft and low vibration frequency of the five-plunger structure, so it has the characteristics of low noise.

2. Large starting torque and good low speed stability. It can operate smoothly at very low speeds.

3. Adopt advanced compensable end-face oil distribution structure, good reliability, less leakage, new sealing ring between the plunger and the cylinder block, with high volume efficiency.

4. The crankshaft and connecting rod are supported by ball bearings, so it has high mechanical efficiency.

5. The direction of rotation is reversible, and the output shaft is allowed to bear certain radial and axial forces.

6. High power to mass ratio, relatively small volume weight.

The hydraulic motor is used to guide the rotating activities, and the hydraulic energy brought by the hydraulic oil pump is changed into the heat transfer equipment of chemical energy. OMS hydraulic motors can be divided into worm gear type, blade type, plunger type and other types according to their structural characteristics.

Different structural characteristics of the hydraulic motor principle is also different, as shown below.

Due to the effect of pressure oil, bearing imbalance causes the stator to torque. The derived torque of the vane hydraulic motor is related to the displacement of the hydraulic motor and the pressure difference between the oil inlet and outlet holes of the hydraulic motor, and its revolution is determined by the total flow of the hydraulic motor. Because OMS-25 hydraulic motors generally need to be able to rotate forward and backward, the blades of bladed hydraulic motors should be placed axially.

In order to better make the blade root directly with pressure oil, the channel at the blade root of the return and pressure oil cavity should be set up throttle valve, in order to better ensure the normal operation of vane type hydraulic motor after the pressure oil flow, it is necessary to make the blade tip and motor stator inner surface close contact, to ensure better sealing, so the torque torsion spring should be set at the blade root.