A Jet Tube Electro-hydraulic Servo Valve with High Linearity and Force Feedback

An electro-hydraulic servo valve, linearity technology, applied in servo motor components, fluid pressure actuating devices, mechanical equipment, etc., can solve problems such as unfavorable actuator control, poor output signal linearity, affecting the movement of the jet tube, etc. The effect of weight reduction, improved linearity, and strong anti-pollution ability

Active Publication Date: 2017-01-25
山东可可西里科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the jet tube electro-hydraulic servo valve adopts electric feedback to increase the volume of the valve, which is not suitable for harsh environments such as humid environment. Ministry of Science and Technology, Special Lectures on Jet Tube Electro-hydraulic Servo Valve[J]. Hydraulic and Pneumatic, 2009(11): 86-88.), but the feedback lever is single-rod, and the force is unbalanced, which affects the movement of the jet tube; The receiver hole of the tube-type electro-hydraulic servo valve is two circular holes, which makes the linearity of the output signal poor, which is not conducive to the control of the actuator; surface, which is not conducive to improving the frequency response of the valve

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Jet Tube Electro-hydraulic Servo Valve with High Linearity and Force Feedback
  • A Jet Tube Electro-hydraulic Servo Valve with High Linearity and Force Feedback
  • A Jet Tube Electro-hydraulic Servo Valve with High Linearity and Force Feedback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A jet tube type electro-hydraulic servo valve with high linearity and force feedback. Such as figure 1 and figure 2 As shown, the electro-hydraulic servo valve is composed of a valve body 3 , a valve core 2 and a feedback fluidic device 5 . The horizontal cavity of the valve body 3 is equipped with a valve core 2 , and the vertical cavity of the valve body 3 is equipped with a feedback jet device 5 , the lower end of the feedback jet device 5 is embedded in the middle of the valve core 2 . The electro-hydraulic servo valve is symmetrically provided with a left oil passage 4 and a right oil passage 1, one oil port of the left oil passage 4 communicates with the left end of the horizontal cavity of the valve body 3, and the other of the left oil passage 4 The oil port communicates with the upper cavity of the feedback jet device 5, one oil port of the right oil passage 1 communicates with the horizontal cavity near the right end of the valve body 3, and the other oil p...

Embodiment 2

[0070] A jet tube electro-hydraulic servo valve with high frequency and high linearity. Except following technical parameter, all the other are with embodiment 1.

[0071] L11+(2.2~2.4)d=L01 (Ⅱ)

[0072] The depth of the annular groove 19 is (0.8-1) times the diameter of the steel ball 28 .

[0073] The distance between the top corners of the two isosceles triangles is 0.01-0.03mm, and the angle between the two receiver oil passages 30 is 45-60°.

[0074] The pressure oil of the present invention is ejected from the jet pipe 23 of the feedback jet device 5, the pressure oil enters the right control oil chamber 8 and the left control oil chamber 11 through the right oil passage 1 and the left oil passage 4, and the pressure oil acts on the right controlled piston 14 and the end face of the left controlled piston 16.

[0075] When the armature assembly 22 does not generate torque, the jet tube 23 is in the middle position of the two receiver oil passages 30, that is, the zero...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a high-linearity force feedback jet pipe type electro-hydraulic servo valve. According to the technical scheme, a valve element (2) is mounted in a horizontal cavity of a valve body (3), a feedback jet unit (5) is mounted in a vertical cavity of the valve body (3), and the lower end of the feedback jet unit (5) is embedded into the middle portion of the valve element (2). A left oil channel (4) and a right oil channel (1) are symmetrically arranged in the electro-hydraulic servo valve. An oil opening of the left oil channel (4) is communicated with the portion close to the left end of the horizontal cavity of the valve body (3) and the other oil opening of the left oil channel (4) is communicated with an upper cavity of the feedback jet unit (5). An oil opening of the right oil channel (1) is communicated with the portion close to the right end of the horizontal cavity of the valve body (3) and the other oil opening of the right oil channel (1) is communicated with the upper cavity of the feedback jet unit (5). The high-linearity force feedback jet pipe type electro-hydraulic servo valve has the advantages of being long in service life, high in anti-pollution capability, high in frequency response, small in size, light in weight, high in reliability, good in stability, high in linearity, low in maintenance cost and capable of reducing the overall costs.

Description

technical field [0001] The invention belongs to the technical field of electro-hydraulic servo valves. Specifically, it relates to a jet tube type electro-hydraulic servo valve with high linearity and force feedback. Background technique [0002] With the advancement of science and technology, hydraulic servo systems are more and more widely used, and electro-hydraulic servo valves are indispensable and very important components of hydraulic servo systems, and their static and dynamic performance directly affect the performance of hydraulic servo systems. Since the nozzle baffle electro-hydraulic servo valve was successfully researched and applied in industry, military and other fields, the dynamic and static performance of the hydraulic servo system has been greatly improved, but the valve has high requirements on the cleanliness of the working medium. Or if the filtration accuracy is not high, the valve will be blocked and lose its working ability. In order to overcome t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02F15B13/16
CPCF15B13/02F15B13/16
Inventor 吴凛陈奎生文小莉湛从昌赵康
Owner 山东可可西里科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap