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Stem positioning device for hydraulic valves and hydraulic valves

A positioning device and hydraulic valve technology, applied in the hydraulic field, can solve the problems of complex ball positioning structure, difficult spring installation, high manufacturing cost, etc., and achieve the effect of simple structure, low manufacturing cost and wide application range

Active Publication Date: 2016-02-10
CHANGDE ZHONGLIAN ZHONGKE HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned steel ball positioning structure is relatively complicated, and the reliability is low, and the installation of the radially arranged springs is relatively difficult, resulting in high manufacturing costs and poor operating feel

Method used

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  • Stem positioning device for hydraulic valves and hydraulic valves
  • Stem positioning device for hydraulic valves and hydraulic valves
  • Stem positioning device for hydraulic valves and hydraulic valves

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Embodiment Construction

[0032] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0033] like figure 1 As shown, one aspect of the present invention provides a valve stem positioning device for a hydraulic valve, the hydraulic valve includes a valve body 1, a valve stem 2 and an end cover 3, the end cover 3 is connected to one end of the valve body 1, so The valve stem 2 extends through the valve body 1 and the positioning end of the valve stem 2 extends into the end cover 3, wherein the outer circumference of the positioning end of the valve stem 2 is formed with axially distributed A plurality of grooves 8, the valve stem positioning device includes a positioning ball 4, a coil spring 5, a positioning sleeve 6 and a locking ring 7, the positioning ...

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Abstract

The invention discloses a valve rod positioning device of a hydraulic valve. The hydraulic valve comprises a valve body, a valve rod and an end cover, wherein the end cover is connected on one end of the valve body, the valve rod passes through the valve body to extend, the positioning end of the valve rod extends into the end cover, a plurality of grooves which are axially distributed are formed on the outer circumference of the positioning end of the valve rod, the valve rod positioning device comprises a positioning ball, a spiral spring, a positioning sleeve and a locking ring, the positioning sleeve is sleeved on the positioning end, the spiral spring is sleeved on the positioning sleeve, the positioning ball is positioned in the positioning hole formed in the side wall of the positioning sleeve, a slope facing the valve rod is formed on the locking ring, the locking ring is sleeved on the positioning sleeve and is positioned between the side wall of the positioning sleeve and the side wall of the end cover, and the spiral spring obliquely presses the locking ring, and can obliquely press the positioning ball towards the grooves through the slope on the locking ring. The invention also discloses the hydraulic valve. The valve rod positioning valve can accurately position the valve rod, the structure is simple, the assembly is convenient, and the manufacture cost is lower.

Description

technical field [0001] The invention relates to the field of hydraulics, in particular to a valve stem positioning device of a hydraulic valve and a hydraulic valve. Background technique [0002] In the hydraulic field, it is often necessary to position various hydraulic valves to keep them in the required working positions, so as to ensure the working stability of the hydraulic valves and reduce system failures. [0003] Usually, the positioning of the hydraulic valve is to keep the hydraulic valve in a certain working condition by limiting the position of the valve stem after the valve stem is operated, such as each working position of the reversing valve, so as to realize different functions of the hydraulic valve. Chinese utility model patent application CN201610954 discloses a steel ball positioning structure for a multi-way valve, which includes a gland and an end cover that are fastened to the end face of the valve body and are fixedly connected by screws. The end cov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 杨红
Owner CHANGDE ZHONGLIAN ZHONGKE HYDRAULIC
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