Inner curve hydraulic motor flow distribution system

Abstract

The invention discloses an inner curve hydraulic motor flow distribution system which comprises a flow distribution plate seat, a flow distribution body is arranged in the flow distribution plate seat, a plurality of sealing assemblies are arranged on the inner wall, on the outer side of the flow distribution body, of the flow distribution plate seat, a rotor assembly is arranged at one end of the flow distribution plate seat, and a plurality of oil passing cavities are formed in the rotor assembly. Third oil channels are arranged in the rotor assembly on one sides of the oil passing cavities, a plurality of evenly-distributed balance pins are arranged on the other end faces, extending to the fluid distribution body, of the third oil channels, a second oil channel is further arranged in the rotor assembly, and the second oil channel extends to the other end face of the fluid distribution body to be communicated with a sixth oil channel in the fluid distribution body. According to the invention, the leakage amount of the joint surface of the flow distribution body and the rotor assembly is reduced, the phenomenon of air flowing difficulty of the flow distribution body is prevented, the service life and the reliability of the flow distribution body are effectively improved, and oil in the high-pressure cavity and oil in the low-pressure cavity can be prevented from flowing, so that the flow distribution precision is better ensured, and the purpose of circulating flow distribution is achieved.

Description

technical field [0001] The invention relates to the technical field of inner curve hydraulic motors, in particular to a flow distribution system for inner curve hydraulic motors. Background technique [0002] The inner curve radial piston hydraulic motor is an extremely important actuator in the hydraulic system. It is a low-speed high-torque hydraulic motor. Advantages, widely used in coal machinery market, raise drilling rigs and crushers and other working conditions. [0003] When the hydraulic motor is working, the most important function of the distribution fluid is "oil distribution", that is, to isolate the high-pressure oil input from the distribution plate seat from the low-pressure oil flowing back from the rotor assembly inside the motor, and to smoothly separate the high-pressure oil. It is distributed to the oil inlet chamber of the rotor, and at the same time, the low-pressure oil in the oil return chamber of the rotor is sent back to the oil return chamber of...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of internal curve hydraulic motor distribution system, to solve the problem that the distribution body of the distribution system in the above background technology is working with the rotor assembly, relying on the small end surface of the distribution fluid away from the rotor assembly. The spring force is used to balance the hydraulic pressure between the two. During the work, the local spring force will be unbalanced instantaneously, which will lead to partial wear of the fitting surface between the valve body and the rotor, and may cause the problem of direct suffocation of the valve body.

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