Shell rotating type cycloid motor with oil drainage function

Abstract

The invention belongs to the field of cycloid hydraulic motors, and particularly relates to a shell rotating type cycloid motor with an oil drainage function. The shell rotating type cycloid motor comprises a rotating part and a fixed part; the interior of the rotating part is connected with the fixed part in a matched mode; a hydraulic shaft seal is arranged at the matched connection position of the fixed part and the rotating part; an oil drainage cavity is further comprised; the oil drainage cavity is formed in the peripheral side of the matched connection position of the fixed part and the rotating part; the oil drainage cavity communicates with the matched connection position of the fixed part and the rotating part; and an oil drainage port is further formed in the fixed part and communicates with the oil drainage cavity through an oil drainage way. Through the design of adding a splitter and a compensation disc, the problem that the oil drainage function cannot be added to a similar shaft rotating motor is solved; after the oil drainage cavity is added, the pressure of motor shaft seal treatment can be reduced, so that the motor can use a common hydraulic shaft seal, the manufacturing cost is reduced, the service life of the hydraulic shaft seal is prolonged, and the maintenance cost is reduced; and the axial length of the motor can be effectively shortened by adopting a shell rotating mode, so that the motor can be conveniently applied to walking driving of small machinery.

Description

technical field [0001] The invention belongs to the field of cycloid hydraulic motors, in particular to a shell-rotating cycloid motor with an oil drain function. Background technique [0002] The cycloidal hydraulic motor is a commonly used hydraulic drive device. It is a low-speed and high-torque motor. It has the advantages of small size, high unit power density, high efficiency, and wide speed range. It has been widely used. will be more extensive. [0003] The cycloidal hydraulic motor in the prior art has an output shaft with a long axial dimension. When it is used as a travel motor in a small-sized machine such as a mini excavator, the long axial dimension prevents the motor from being completely installed within the width of the track. If it is inside, it will exceed the protection range of the track. When the machine is running, the harsh ground conditions will easily cause damage to the motor. [0004] The use of the shell-rotating cycloidal motor can omit the ou...

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a shell-rotating cycloidal motor with an oil drain function. By adding the design of the shunt plate and the compensation plate, the problem that the oil drain function cannot be increased for similar shaft-rotating motors is solved, and the oil drain chamber is increased. Finally, it can reduce the pressure of the motor shaft seal, so that the motor can use ordinary hydraulic shaft seals, reduce manufacturing costs, prolong the service life of hydraulic shaft seals, and reduce maintenance costs; and the use of shell rotation can effectively shorten the axial length of the motor , easy to apply to the travel drive of small machinery

Images