Direct-drive type high-response axial plunger type variable hydraulic motor with servo motor

A technology of variable motor and servo motor, which is applied in the field of hydraulic variable motor, can solve the problems of not satisfying the output characteristic of hydraulic variable motor, fast response of variable link, slow response of variable link, etc. Ease of machining effect

Inactive Publication Date: 2015-12-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The traditional hydraulic variable motor needs to convert the electric signal into the spool opening of the hydraulic valve through the proportional electromagnet to realize the variable. The stroke of the variable piston is controlled by the h

Method used

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  • Direct-drive type high-response axial plunger type variable hydraulic motor with servo motor
  • Direct-drive type high-response axial plunger type variable hydraulic motor with servo motor

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Embodiment Construction

[0019] refer to figure 1 The present invention improves the variable mechanism of the existing axial piston hydraulic variable motor, and removes the internal oil circuit of the variable mechanism of the existing hydraulic variable motor. Specifically, as figure 1 As shown, the variable mechanism of the hydraulic variable motor of the present invention includes a servo motor 1 , a variable control rod 4 , a displacement sensor 8 and a servo drive controller 11 . Wherein, the output end of the servo drive controller 11 is connected with the servo motor 1; the mover of the servo motor 1 is fixedly connected with one end of the variable control rod 4, and the other end of the variable control rod 4 is placed in the chute of the displacement sensor 8 , so that the variable control rod 4 can reciprocate in the chute driven by the servo motor 1 . The displacement sensor 8 is connected to the first signal feedback terminal of the servo drive controller 11 . The displacement sensor...

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Abstract

The invention discloses a direct-drive type high-response axial plunger type variable hydraulic motor with a servo motor. The variable displacement mechanism of the direct-drive type high-response axial plunger type variable hydraulic motor comprises a servo motor, a variable control lever, a displacement sensor and a servo driving controller, wherein the output end of the servo driving controller is connected with the servo motor, and a rotor of the servo motor is fixedly connected with one end of the variable control lever; the other end of the variable control lever is positioned in a sliding groove of the displacement sensor, and the variable control lever can move to and fro in the sliding groove; and the end part of a driver pin of an oil distribution disc of the hydraulic variable displacement motor is fixedly connected with the variable control lever, and the displacement sensor is connected with a first signal feedback end of the servo driving controller. The variable hydraulic motor is simple and reasonable in structure, variable displacement and high frequency response and high precision stepless adjustment of variable torque output are realized on the axial plunger type variable hydraulic motor, and the whole adjustment process is smooth and is free of vibration.

Description

technical field [0001] The invention relates to an axial piston type hydraulic variable motor, in particular to a hydraulic variable motor for realizing rapid and precise variable displacement control or torque control. Background technique [0002] As an actuator of the hydraulic system, the hydraulic motor converts the hydraulic energy of the liquid into the mechanical energy of the output shaft, and is widely used in the hydraulic transmission system. Under the action of the variable control device, the hydraulic variable motor can adjust its output characteristics within a certain range according to the needs of the work, and realize steplessly variable displacement. Variable speed motors and variable pumps are often used in open and closed loops of hydraulic systems to form volumetric speed control loops. They have high efficiency and significant energy-saving effects, and are widely used in many hydraulic equipment. The dynamic response frequency of the variable mecha...

Claims

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Application Information

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IPC IPC(8): F03C1/40
Inventor 魏建华李世振李明杰王樊昕郁天时
Owner ZHEJIANG UNIV
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