Load-deflection-resisting static pressure bearing sealing hydraulic cylinder

A static pressure support and sealing hydraulic technology, which is applied in hydraulic cylinders and hydraulic transmission professional fields, can solve problems such as large friction, low dynamic performance and working stability, and short working life, so as to reduce friction and improve motion stability and dynamic responsiveness, the effect of improving the vibration frequency and positioning accuracy

Inactive Publication Date: 2018-06-22
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the shortcomings of the existing hydraulic cylinder technology, the problems of high friction, short working life, low dynamic performance and working stability

Method used

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  • Load-deflection-resisting static pressure bearing sealing hydraulic cylinder
  • Load-deflection-resisting static pressure bearing sealing hydraulic cylinder
  • Load-deflection-resisting static pressure bearing sealing hydraulic cylinder

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention is described below through specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0018] The structural composition of the present invention is as figure 1 , figure 2 , image 3 , Figure 4 shown. The present invention is an anti-eccentric load static pressure bearing sealed hydraulic cylinder, which is characterized in that it comprises a static pressure piston (5), a static pressure guide sleeve (10), a static pressure connecting body (3), a piston rod (7), an upper and lower Cylinder body, upper and lower cylinder heads, sealing ri...

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Abstract

The invention discloses a load-deflection-resisting static pressure bearing sealing hydraulic cylinder which comprises a static pressure piston, a static pressure guide sleeve, a static pressure connection body, a piston rod, upper and lower cylinder bodies, upper and lower cylinder covers and a sealing ring. Static pressure bearing oil films are produced between the piston and the inner wall of ahydraulic cylinder barrel and produced between the piston rod and the guide sleeve according to the liquid static pressure bearing sealing principle through a gap between the piston and the inner wall of the hydraulic cylinder barrel and a gap between the piston rod and the guide sleeve, and the piston or the piston rod is suspended in hydraulic oil. Leakage of hydraulic oil can be effectively prevented through the reasonable gaps, friction force produced through sealing of a sealing ring adopted by a traditional hydraulic cylinder is greatly reduced, the hydraulic cylinder can resist lateralload, deviation correction of the piston is facilitated, the vibration frequency and positioning precision of the hydraulic cylinder can be improved, and movement stability and dynamic responsivenessof movement components are improved.

Description

technical field [0001] The invention belongs to the professional field of hydraulic transmission. By optimizing the structure of the hydraulic cylinder piston and guide sleeve, and using the principle of static pressure support sealing, the friction force generated by the sealing ring of the hydraulic cylinder is greatly reduced, which is beneficial for the hydraulic cylinder to resist side loads and can improve the hydraulic cylinder. Excellent vibration frequency and positioning accuracy prolong the working life of the hydraulic cylinder and are suitable for the technical field of hydraulic cylinders. Background technique [0002] As the actuator and power element of the hydraulic system, the performance of the hydraulic cylinder directly affects the control accuracy and response speed of the system. Compared with ordinary hydraulic cylinders, hydraulic cylinders require less friction and excellent lateral load resistance to meet the requirements of heavy loads and eccent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/1457F15B15/1447F15B15/20
Inventor 邵俊鹏李景钵孙桂涛徐龙飞
Owner HARBIN UNIV OF SCI & TECH
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