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Electrohydraulic proportioning valve capable of correcting chucking faults by utilizing electromagnetic attraction force

An electro-hydraulic proportional valve and electromagnetic suction technology, which is applied in the field of hydraulic valves, can solve problems such as the inability to apply the proportional valve control system and ensure troubleshooting, and achieve the effects of simple structure, good use effect and low cost

Inactive Publication Date: 2012-10-10
SHAOXING UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation of this solution is that since the tapping energy is obtained by compressing the mechanical spring when the power is turned on, the "hammer" spool has only one tapping action, and it is one-way, which cannot ensure troubleshooting, nor can it be applied to Servo, proportional valve control system

Method used

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  • Electrohydraulic proportioning valve capable of correcting chucking faults by utilizing electromagnetic attraction force
  • Electrohydraulic proportioning valve capable of correcting chucking faults by utilizing electromagnetic attraction force
  • Electrohydraulic proportioning valve capable of correcting chucking faults by utilizing electromagnetic attraction force

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Embodiment Construction

[0025] The implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The structure of ordinary electro-hydraulic proportional valve is as follows: figure 1As shown, it includes a valve core 1' and a valve body, and the valve body includes a valve cavity 2' and a valve wall 3'. As for other parts, generally also comprise proportional amplifier 5 ', proportional electromagnet 4 '. Proportional electromagnet 4 ' also can be single, replaces with back-moving spring at the other end. The proportional electromagnet cooperates with the spool, and drives the spool through the proportional electromagnet. The moving iron core of general proportional electromagnet 4 ' bears on spool 1 '. By changing the position of the spool 1' in the valve cavity of the valve body, the proportional valve can realize the change of fluid flow direction and on-off. The foregoing is the prior art, and will not be repeated he...

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Abstract

The invention relates to an electrohydraulic proportioning valve capable of correcting chucking faults by utilizing electromagnetic attraction force. The electrohydraulic proportioning valve comprises a valve core and a valve body provided with a valve cavity, wherein the valve body comprises a specially-made valve wall; the specially-made valve wall comprises an upper main valve wall, a lower main valve wall, a left main valve wall, a right main valve wall, four magnetism isolating bands separating the main valve walls and arranged at the four top corners of the valve wall, and four groups of solenoid coils provided with magnetic-conductive frameworks and sleeved on the four main valve walls respectively; and the valve core and the main valve walls are made of magnetizer alloy, and the magnetism isolating bands are made of non-magnetizer alloy. The electrohydraulic proportioning valve further comprises a power supply control device which is electrically connected with the four groups of solenoid coils of the specially-made valve wall and can control the on / off of the solenoid coils respectively. Through the adoption of the technical scheme, the electrohydraulic proportioning valve can correct chucking faults caused by pollution and radial off-balance pressure by utilizing electromagnetic attraction force conveniently and quickly.

Description

technical field [0001] The invention relates to a hydraulic valve, in particular to an electro-hydraulic proportional valve which uses electromagnetic suction to repair clamping faults. Background technique [0002] The spool valve mechanism is the most commonly used structural form in various hydraulic valves. The spool valve is composed of two main components: the valve core and the valve body with the valve cavity. By changing the position of the valve core in the valve cavity of the valve body, The slide valve can realize the change of fluid flow and on-off. Spool valve clamping fault is one of the most common faults and failure forms in the hydraulic system, which can be generally divided into two categories: hydraulic clamping and mechanical clamping. The hydraulic clamping is caused by radial unbalanced pressure caused by the geometrical error and coaxiality error of the spool caused by machining; while the mechanical clamping is caused by the gradual accumulation of...

Claims

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Application Information

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IPC IPC(8): F15B13/02
Inventor 李伟波张华芳
Owner SHAOXING UNIVERSITY
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