Low friction and small travel servo oil cylinder

A technology of servo cylinder and small stroke, which is applied in the direction of engine sealing, fluid pressure actuator, engine components, etc. It can solve the problems of the influence of the outer cylindrical surface of the piston, etc., and achieve the reduction of friction, easy dynamic response and stability control Effect

Inactive Publication Date: 2018-01-09
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 low-friction and small-stroke servo cylinder to solve the problem that the friction of the outer cylindrical surface of the piston in the servo cylinder affects its control

Method used

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  • Low friction and small travel servo oil cylinder

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Embodiment Construction

[0016] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0017] A low-friction and small-stroke servo cylinder, including an earring 1, an end cover 2, an oil port 3, a cylinder body 4, a rubber bladder 5, a cylinder body bolt assembly 6, a piston bolt assembly 7, a guide sleeve 8, a limit snap ring 9, Dustproof ring 10, O-shaped sealing ring 11, piston rod 12, piston 13, half ring 14, shaft sleeve 15, spring retaining ring 16.

[0018] The earring 1 is fixed on the end cap 2, and the end cap 2 is fixed on the left end of the cylinder body 4 by welding, and the same side of the cylinder body 4 is provided with two oil ports 3, an A oil port and a B oil port. The guide sleeve 8 is located at the right end of the cylinder body 4 . A rubber bladder 5 is placed between the left and right parts of the cylinder 4, and the rubber bladder 5 and the cylinder 4 are tightly connect...

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Abstract

The invention belongs to the technical field of hydraulic servo cylinders, and provides a low friction and small travel servo oil cylinder. The low friction and small travel servo oil cylinder comprises a lug ring, an end cover, an oil port, rubber leather bags, cylinder body bolt assemblies, piston bolt assemblies, guiding sleeves, limiting clamping rings, dustproof rings, sealing rings, a piston, a piston rod, half rings, a shaft sleeve and a spring check ring. The lug ring is arranged on one side of the end cover, and the other side of the end cover is connected with a cylinder barrel in awelded manner; the rubber leather bags are connected with the piston through the piston bolt assemblies, and are connected with a cylinder body through the cylinder body bolt assemblies; a clamping key connection manner is adopted by the piston rod and the piston; the dustproof rings and the sealing rings are embedded in the inner cylindrical faces of the guiding sleeves, and make contact with thepiston rod; and the guiding sleeves are connected with the cylinder body in a spot welding manner. The servo oil cylinder is applicable to the low pressure and small displacement condition, the friction force between the piston and the cylinder body is eradiated, the rubber leather bags are good in sealing, and internal leakage is avoided.

Description

technical field [0001] The invention belongs to the technical field of hydraulic servo cylinders, and relates to a servo cylinder, in particular to a low-friction and small-stroke servo cylinder under low pressure conditions. Background technique [0002] With the continuous advancement of hydraulic technology, the hydraulic system is gradually developing into the high-precision field, and the application of the servo hydraulic system is increasing. As an important actuator in the servo hydraulic system, the performance of the servo cylinder directly affects the product accuracy. Among them, the friction force of the servo cylinder has a great influence on the dynamic response, control accuracy and stability of the system, especially the influence of the friction on the outer cylindrical surface of the piston of the servo cylinder is particularly prominent, and the larger the volume of the servo cylinder, the larger the surface area of ​​the outer cylindrical surface of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20F16J15/16
Inventor 桑勇王旭东邵利来
Owner DALIAN UNIV OF TECH
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