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A frictionless servo actuator

A servo actuator, frictionless technology, applied in the field of hydraulic servo cylinder, can solve the problems of the control effect of piston rod and seal servo system, and achieve the effect of easy hydraulic servo system control and elimination of nonlinear effect.

Inactive Publication Date: 2018-11-06
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a frictionless servo actuator to solve the problem of the influence of the friction between the piston outer cylindrical surface and the cylinder body and the friction between the piston rod and the seal on the control of the servo system in the servo actuator

Method used

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  • A frictionless servo actuator

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Embodiment Construction

[0015] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0016] A frictionless servo actuator, the cylinder body 6 is a three-stage structure of left, middle and right. A rubber bladder I4 is placed between one end of the cylinder body 6 in the middle and the cylinder body on the left side. The rubber bladder I4 and the cylinder body 4 are tightly connected by the cylinder body bolt assembly I5. The rubber bladder I4 is in close contact with the cylinder body 6 to play an external The role of sealing. A rubber bladder II7 is placed between the other end of the cylinder body 6 in the middle part and the cylinder body on the right side, and the rubber bladder II7 and the cylinder body 6 are tightly connected by the cylinder body bolt assembly II8, and the rubber bladder II7 is in close contact with the cylinder body 6 to play The role of the outer seal. The earring 1 is f...

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Abstract

The invention belongs to the technical field of hydraulic servo cylinders, and provides a frictionless servo actuator. The frictionless servo actuator comprises a lug ring, an end cover, an oil port, two rubber bags, two sets of cylinder body bolt assemblies, a cylinder body of a conical structure, two pistons, a limiting baffle, a piston rod, two piston bolt assemblies, two semi-rings, two shaft sleeves, and two spring collars. One side of the end cover is provided with the lug ring, and the other side of the end cover is connected with a cylinder barrel in a welded mode. The first rubber bag is connected with the first piston through the first piston bolt assembly and connected with the cylinder body through the first cylinder body bolt assembly. The piston rod is in clip key connection with the first piston. The second rubber bag is connected with the second piston through the second piston bolt assembly. The rubber bags are connected with the cylinder body through the second cylinder body bolt assemblies. The piston rod is in clip key connection with the second piston. The frictionless servo actuator provided by the invention is suitable for the low-pressure small-displacement condition and is internally free of friction force action, in addition, the rubber bags have a sealing effect, and inner leakage is avoided.

Description

technical field [0001] The invention belongs to the technical field of hydraulic servo cylinders, and relates to a servo actuator, in particular to a frictionless servo actuator under low pressure conditions. Background technique [0002] Servo actuator is an important type of actuator in the hydraulic servo system, which can perform tension and compression on the load. Servo actuators are widely used in aircraft, tanks and other hydraulic equipment, and their performance directly affects the overall performance of the equipment. The friction force of the servo actuator is the main factor affecting the control accuracy of the servo control system. The friction force mainly occurs at the seal of the servo actuator, and the leakage is often caused by the unsatisfactory sealing effect. In the servo actuator, There are two sources of friction. On the one hand, it comes from the friction between the outer cylindrical surface of the piston and the cylinder of the servo actuator, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/1423F15B15/1428F15B15/20
Inventor 桑勇王旭东邵利来
Owner DALIAN UNIV OF TECH
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