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Double-acting nut-locking hydrocylinder

A nut locking and hydraulic cylinder technology, applied in the field of hydraulic cylinders, can solve problems such as the difficulty of sealing the hydraulic chamber in the jacking oil chamber, and the inability to realize the hydraulic return stroke, etc., and achieve the effect of a simple and feasible solution

Inactive Publication Date: 2014-11-19
ACTUANT CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, when oil is supplied to the return oil chamber, the pressure in the return oil chamber rises, causing the threaded plunger to move downward to realize the return function. To realize the hydraulic return stroke, we can only rely on the problem of load return stroke

Method used

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  • Double-acting nut-locking hydrocylinder
  • Double-acting nut-locking hydrocylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] A double-acting nut-locking hydraulic cylinder as shown in the figure includes: a saddle 1, a threaded plug 2, a locking nut 3, a cylinder 9, and a return mechanism; the return mechanism includes: set on the thread The return oil cavity 14 inside the plunger 2 and the return plunger 4 reciprocating in the return oil cavity 14; in order to strengthen the sealing performance, it is also provided with: dust ring 5, return plunger piston rod sealing ring 7, threaded plunger Piston sealing ring 8, return plunger static sealing ring 10, return plunger piston sealing ring 15.

[0022] The relationship between the above components is as follows:

[0023] The saddle 1 is fixed on the top of the threaded plunger 2; the lower end of the threaded plunger 2 is inserted into the jacking oil chamber 13 of the cylinder 9, and the return plunger piston sealing ring 15 is located between the return plunger 4 and the return plunger 4. Between the contact surfaces of the oil cavity 14; the ret...

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Abstract

The invention discloses a double-acting nut-locking hydrocylinder. By arranging a returning mechanism in a threaded plunger in a nut-locking hydrocylinder body, a sealed returning oil cavity is formed in the threaded plunger, and external oil supply and oil return can be performed independently; although the structure of an original nut-locking hydrocylinder is not affected, the problem that the original nut-locking hydrocylinder cannot achieve automatic returning is solved. In this way, the double-acting nut-locking hydrocylinder can have the functions of nut locking and hydraulic returning at the same time.

Description

technical field [0001] The invention relates to a hydraulic oil cylinder, and in particular provides a double-acting nut locking hydraulic oil cylinder with functions of hydraulic return stroke and nut locking. Background technique [0002] Hydraulic cylinders are more and more widely used in engineering construction, especially in the bridge construction industry. Compared with mechanical jacking, they have higher energy density and jacking capacity, but it is difficult to guarantee safety. Therefore, in practical applications, they must use Using solid blocks as safety protection reduces work efficiency and increases costs. [0003] The appearance of the nut locking cylinder effectively solves this problem. After the hydraulic cylinder is lifted, it locks the plunger through the nut on the top of the cylinder to provide mechanical protection and prevent accidents caused by hydraulic pressure drop and leakage. The problem of load drop. However, the upper part of the plung...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20F15B15/26
Inventor 暴术龙夏辉
Owner ACTUANT CHINA
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