Introduction of hydraulic motors

The hydraulic motor and the reducer are integrated transmission devices. The reducer plays the role of matching the speed and transmitting torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery. The reducer can be divided into two categories: general reducer and special reducer according to the purpose, and the design, manufacture and use characteristics of the two are different.

The hydraulic motor is composed of a connected reducer and a hydraulic control valve that controls the rotation of the hydraulic motor transmission. The planetary gear device meshing with it, the second-level planetary gear also serves as the reducer housing of the drive device, and two rows of inner gears are arranged concentrically on the casing, the second-level central gear is meshed with the second-level planetary gear, and the The internal gears of the secondary planetary gear reducer housing mesh.

Characteristics of hydraulic motors

The housing of the hydraulic motor used to fix the entire transmission together operates the planetary carrier of the secondary reduction planetary gear, the right end of the hydraulic motor housing is equipped with a rotating secondary planetary reducer housing, and the left end of the hydraulic motor housing A front cover is fixedly connected. The hydraulic motor is a radial hydraulic motor provided with a plurality of hydraulically propelled radially reciprocating plungers and an output crankshaft to which the plurality of radial plungers are connected. The output crankshaft of the radial hydraulic motor is fixedly connected with a central shaft gear with a first-stage deceleration; a second-stage deceleration central gear is movably installed on the central shaft gear. The first-stage planetary gear is installed on the first-stage planetary carrier connected with the second-stage reduction sun gear, the second-stage sun gear meshes with the second-stage planetary gear, and the second-stage planetary gear meshes with the internal gear of the reducer housing; The inner gear of the planetary gear reducer shell meshes with each other; the front end of the front cover, where the shell of the hydraulic motor is fixedly connected, is provided with an oil circuit integrated block that combines the control valve and hydraulic distributor for the rotation and braking of the hydraulic motor and the reducer. .

Matching of hydraulic motors

The reducer is a relatively good equipment. Its purpose is to reduce speed and increase torque, and it runs together with a hydraulic motor. Various types of hydraulic motors are configured with different types of reducers, and different types have different uses. The reducer is a driving force transmission mechanism, which uses the speed converter of the gear to reduce the speed of the motor to the desired speed and obtain a large torque.

The reducer is generally used for low-speed high-torque motor equipment. The dual-shaft hydraulic travel motor inputs the gear transmission system to the large gear on the output shaft according to the few gears on the input shaft of the reducer, the motor, gas turbine or other high-speed driving force. The torque of the rotary hydraulic motor, the general reducer also has several groups of gears with the same basic principle, so as to achieve the actual effect of idealized speed reduction. The gear ratio of the size gear is the reduction ratio.

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