Automatic balancing valve

A technology of automatic balancing and balancing oil cylinders, which is applied in the direction of balance valves, safety valves, valve devices, etc., can solve the problems that the floating control pressure cannot be adjusted, and the pressure floating control cannot be realized, so as to realize the pressure follow-up of multiple oil cylinders and ensure the bearing capacity Ability, stable effect

Inactive Publication Date: 2010-02-03
四川航天神坤科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the floating two-way lock uses the floating control piston to control the hydraulic control check valve assembly, and the floating control pressure cannot be adjusted. When the pressure on the top plate is hig

Method used

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  • Automatic balancing valve
  • Automatic balancing valve
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Embodiment Construction

[0026] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0027] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0028] Such as figure 1 with image 3 As shown, an automatic balance valve includes a valve body 1, and two hydraulic control check valve assemblies, two directional control valve assemblies and two pressure control valve assemblies installed on the valve body 1; on the valve body 1 There are also system inlet and return chamber A1, system inlet and outlet chamber B1, directional control valve assembly control chamber C1, balance cylinder co...

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Abstract

The invention discloses an automatic balancing valve which comprises a valve body, and two hydraulic control one-way valve assemblies, two directional control valve assemblies and two pressure controlvalve assemblies are arranged on the valve body; one end of the hydraulic control one-way valve assembly is connected with a liquid inlet chamber and a liquid return chamber of a system, and the other end of the hydraulic control one-way valve assembly is communicated into one of balancing cylinders; one ends of the directional control valve assemblies are respectively communicated into one of the balancing cylinders, a control chamber of the directional control valve assembly and a liquid inlet chamber of the pressure control valve assembly; and a liquid outlet chamber of the pressure control valve assembly is communicated with the liquid inlet chamber and the liquid return chamber of the system. The invention has the advantages of simple structure, easy processing and convenient dismounting and maintenance, the position of the balancing cylinders can be locked while the pressure are free, the cylinders float while in pressure, the stability of posture adjustment of hydraulic brackets is achieved, and the safety operation of the brackets is ensured.

Description

technical field [0001] The invention relates to a coal mine fully mechanized mining support equipment, in particular to an automatic balance valve for a hydraulic support. Background technique [0002] In the process of using the hydraulic support, there are problems that the life of the balance cylinder of the hydraulic support is too short and the failure rate is too high, so a balance compensation valve composed of a pressure control valve assembly and a direction control valve assembly appears. Through this valve, when the hydraulic support is lowering-moving-raising the column, the balance cylinder will float and automatically adjust and fit according to the inclination angle of the coal seam roof, so as to avoid frequent opening of the safety valve of the balance cylinder and avoid repeated overpressure of the balance cylinder, which will affect its use life. The function of the balance compensation valve for the hydraulic support is that during the use of the hydraul...

Claims

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Application Information

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IPC IPC(8): F16K17/02
Inventor 刘天远沈雪松刘学垠陈建先
Owner 四川航天神坤科技有限公司
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