Method for correcting chucking faults of electrohydraulic proportioning valve by utilizing electromagnetic force
An electro-hydraulic proportional valve, electromagnetic force technology, applied in the direction of fluid pressure actuation device, servo motor assembly, mechanical equipment, etc., can solve problems such as inability to apply proportional valve control system, failure to ensure troubleshooting, etc.
Inactive Publication Date: 2014-09-03
SHAOXING UNIVERSITY
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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
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[0043] The implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0044] The structure of ordinary electro-hydraulic proportional valve is as follows: figure 1 As 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 h...
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The invention relates to a method for correcting chucking faults of an electrohydraulic proportioning valve by utilizing electromagnetic force. The electrohydraulic proportioning valve comprises a proportion electro-magnet, a valve core and a valve body provided with a valve cavity. The method comprises the steps of installation, refomation and correction, wherein the step of installation refers to installing a valve core magnetization device between the valve core and the proportion electro-magnet, the valve core magnetization device comprises a solenoid coil provided with a magnetic-conductive framework, and a cylindric axle core, the axle core and the valve core are integrated, and the axle core is made of magnetizer alloy; and the step of refomation refers to reforming the valve wall of the valve body into a specially-made valve wall. Through the adoption of the technical scheme, chucking faults caused by pollution and radial off-balance pressure by utilizing electromagnetic force can be corrected conveniently and quickly, and the effects of simplicity and convenience in operation, and good using effect can be achieved.
Description
technical field [0001] The invention relates to a method for repairing the clamping fault of an electro-hydraulic proportional valve, in particular to a method for repairing the clamping fault of an electro-hydraulic proportional valve by using electromagnetic force. 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...
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IPC IPC(8): F15B13/02
Inventor 李伟波张华芳
Owner SHAOXING UNIVERSITY