Alternating current servo motor driving device for discharge capacity adjustment of radial plunger pump

A technology of AC servo motors and driving devices, which is applied in the direction of machines/engines, pumps, multi-cylinder pumps, etc., can solve problems such as oil leakage, slow response speed, and inaccurate adjustment, and achieve accurate adjustment, fast response speed, and improved dynamics performance effect

Inactive Publication Date: 2014-11-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the eccentricity adjustment device of this type of pump is adjusted by a hydraulic device, which has problems such as inaccurate adjustment, slow response speed, and oil leakage.

Method used

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  • Alternating current servo motor driving device for discharge capacity adjustment of radial plunger pump
  • Alternating current servo motor driving device for discharge capacity adjustment of radial plunger pump

Examples

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0014] refer to figure 1 and figure 2 , an AC servo motor drive device for adjusting the displacement of a radial piston pump, including a stator 17 and a rotor 12 of a radial piston pump with axial flow distribution, the eccentricity of the stator 17 and the rotor 12 can be adjusted, and the rotor 12 is mounted on the flow distribution On the shaft 11, there are eleven uniformly distributed plunger holes 18 along the circumferential direction of the rotor 12. The plunger 13 is arranged in the plunger hole 18, and the plunger 13 can reciprocate in the plunger hole 18. The stator 17 and the The swing frame 10 is fixedly connected, the swing frame beam 8 is connected with the swing frame 10, the stator 17 and the swing frame 10 are provided with a radial plunger pump casing 9, and the servo motor 1 is fixed on the radial plunger pump casing 9 through an end c...

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PUM

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Abstract

An alternating current servo motor driving device for discharge capacity adjustment of a radial plunger pump comprises the shaft flow distribution radial plunger pump. A servo motor is fixed to a shell of the radial plunger pump through an end cover. An output shaft of the servo motor is in clearance fit with a sun wheel of a planetary reducer. A planet wheel of the planetary reducer is connected with a connecting block through a shaft sleeve and a hinge pin. The connecting block is connected with a screw nut. The outer portion of the connecting block is connected with the shell of the radial plunger pump in a matched mode through a conical roller bearing and a deep groove ball bearing. A ball screw is connected with a swing frame beam of the radial plunger pump. The swing frame beam is connected with a swing frame. The servo motor and the planetary reducer are both installed on the shell of the radial plunger pump. The screw nut rotationally drives the ball screw to move horizontally, so that the swing frame is driven to rotate around a swing shaft, and the offset of the radial plunger pump is adjusted. According to the alternating current servo motor driving device, adjustment is accurate and the response speed is high.

Description

technical field [0001] The invention belongs to the technical field of radial plunger pumps, in particular to an AC servo motor drive device for adjusting the displacement of a radial plunger pump. Background technique [0002] As an important aspect of modern industrial technology, hydraulic technology has been widely used in various industrial equipment, walking machinery, ships and aircraft. In the hydraulic system, the function of the hydraulic pump is to convert the mechanical energy of the prime mover such as the electric motor or the internal combustion engine into the pressure energy of the liquid, provide pressure oil to the system and drive the actuator to work, which belongs to the hydraulic power component. [0003] There are many structural forms of radial piston pumps, but the common feature is that each plunger is arranged in the radial direction of the transmission shaft, that is, the centerline of each plunger is perpendicular to the centerline of the transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B1/07F04B17/03
Inventor 赵升吨李省范淑琴
Owner XI AN JIAOTONG UNIV
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