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Ultrasonic hydraulic valve

An ultrasonic and hydraulic valve technology, used in fluid pressure actuating devices, fluid pressure actuating system components, servo motor components, etc., can solve problems such as interference with the normal operation of the system, inability to overcome clamping force, etc., to eliminate hydraulic jamming , Simple structure, easy to use effect

Inactive Publication Date: 2012-08-08
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation of this idea is that sometimes the clamping force cannot be overcome only by the electromagnetic force of the valve body itself, and the sharp change of the electrical signal will also interfere with the normal operation of the system.

Method used

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  • Ultrasonic hydraulic valve
  • Ultrasonic hydraulic valve
  • Ultrasonic hydraulic valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Stuck fault detection and self-repair

[0028] refer to figure 1 and figure 2 , an ultrasonic hydraulic valve, including an electro-hydraulic proportional valve 30, the electro-hydraulic proportional valve 30 includes a valve body 35, a spool 34, a valve chamber 33 for placing the spool, and a proportional electromagnet 24. It also includes an ultrasonic generator 2 and an ultrasonic transducer 3 , the ultrasonic generator 2 and the ultrasonic transducer 3 are arranged in pairs, and the output end of the ultrasonic generator 2 is electrically connected to the two electrodes of the ultrasonic transducer 3 . There are an even number of ultrasonic transducers, which are fixed and installed symmetrically on the side of the valve body of the electro-hydraulic proportional valve with respect to the central axis of the valve cavity of the electro-hydraulic proportional valve. The axes intersect perpendicularly and the axis lines are in the same plane.

[0029] I...

Embodiment 2

[0032] Example 2: Clamping fault detection and self-repair

[0033] refer to figure 1 and image 3 , an ultrasonic hydraulic valve, including an electro-hydraulic proportional valve 30, the electro-hydraulic proportional valve 30 includes a valve body 35, a valve core 34, a valve cavity 33 for placing the valve core, and a proportional electromagnet 24. It also includes an ultrasonic generator 2 and an ultrasonic transducer 3 , the ultrasonic generator 2 and the ultrasonic transducer 3 are arranged in pairs, and the output end of the ultrasonic generator 2 is electrically connected to the two electrodes of the ultrasonic transducer 3 . There are an even number of ultrasonic transducers, which are fixed and installed symmetrically on the side of the valve body of the electro-hydraulic proportional valve with respect to the central axis of the valve cavity of the electro-hydraulic proportional valve. The axes intersect perpendicularly and the axis lines are in the same plane. ...

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Abstract

The invention relates to an ultrasonic hydraulic valve. The ultrasonic hydraulic valve comprises an electro-hydraulic proportional valve, wherein the electro-hydraulic proportional valve comprises a valve body, a valve core, a valve chamber for placing the valve core and a proportional electromagnet and further comprises ultrasonic generators and ultrasonic transducers, wherein the ultrasonic generators and the ultrasonic transducers are arranged in pairs; the output ends of the ultrasonic generators are electrically connected with two electrodes of the ultrasonic transducers; the ultrasonic transducers with even number are fixed and are symmetrically arranged on the side of the valve body of the electro-hydraulic proportional valve relative to the central axis of the electro-hydraulic proportional valve; the axes of the ultrasonic transducers are vertically intersected with the central axis of the electro-hydraulic proportional valve; and all axes are in the same plane. Through the adoption of the technical scheme, bite and chucking failures caused by pollution and unbalanced radial force can be repaired through ultrasonic vibration, the structure is simple, and the cost is low.

Description

technical field [0001] The invention relates to a hydraulic valve, in particular to an ultrasonic hydraulic valve which utilizes ultrasonic vibration to repair jamming faults caused by pollution and radial force imbalance. Background technique [0002] The spool valve mechanism is the most widely used structural form in various hydraulic valves. The spool valve is composed of three main parts: the valve body, the valve core and the valve cavity. By changing the position of the spool in the valve body cavity, the spool valve can be Realize the change and on-off of fluid flow. Spool valve jamming or even jamming fault is one of the most common faults and failure forms in hydraulic systems, which can generally be divided into two categories: hydraulic jamming, jamming, and mechanical jamming and jamming. In layman's terms, jamming refers to the intermediate state between normal working conditions and jamming. Jamming means that the valve core cannot move. Jamming means that th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B21/04
Inventor 李伟波张华芳
Owner SHAOXING UNIVERSITY