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Double-valve-core programmable-control hydraulic valve adopting digital fluid pilot drive and control method thereof

A technology of programming control and double spools, which is applied in fluid pressure actuators, fluid pressure actuator system components, servo motor components, etc., can solve the problems of energy waste and the inability to independently adjust the valve inlet and outlet pressure, etc., to achieve Effects of reducing oil pressure disturbance, improving stability, and increasing working life

Pending Publication Date: 2021-01-08
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the load that needs to provide back pressure, the traditional electro-hydraulic proportional valve cannot independently adjust the inlet and outlet pressure of the valve, resulting in a waste of energy

Method used

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  • Double-valve-core programmable-control hydraulic valve adopting digital fluid pilot drive and control method thereof
  • Double-valve-core programmable-control hydraulic valve adopting digital fluid pilot drive and control method thereof
  • Double-valve-core programmable-control hydraulic valve adopting digital fluid pilot drive and control method thereof

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Embodiment Construction

[0029] The present invention will be further elaborated and described below in combination with specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0030] Such as Figure 1-5 As shown, the present invention discloses a digital fluid pilot-driven double-spool programmable control hydraulic valve, which includes a main valve body (1), eight high-speed switching valves, four one-way throttle valves and two three-position Three-way proportional valve; the two three-position three-way proportional valves are located in the main valve body (1), and 8 high-speed switching valves are installed on the main valve body; the main valve body (1) is provided with a main oil circuit P Port (7), main oil circuit T port (8), A port (4), B port (5), pilot oil circuit P port (9) and pilot oil circuit T port (10);

[0031] Port P (7) of the main oil circuit is...

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Abstract

The invention discloses a double-valve-core programmable-control hydraulic valve adopting digital fluid pilot drive and a control method thereof. The hydraulic valve comprises a main valve body, eighthigh-speed switch valves, four one-way throttle valves and two three-position two-way proportional valves, wherein the two three-position three-way proportional valves are positioned in the main valve body; the right high-speed switch valves are mounted on the main valve body; and a main oil path PTAB port, a pilot oil path P port and a pilot oil path T port are arranged on the main valve body. The double-valve-core programmable-control hydraulic valve adopts valve cores of a pilot-level control proportional valve consisting of the high-speed switch valves, and has the advantages that: whilethe positions of the valve cores of the proportional valves are regulated, oil pressure disturbance at the two ends of each proportional valve can be greatly reduced, and stability while the proportional valves work is improved; and while the positions of the valve cores of the proportional valves are kept, oil pressure disturbance at the two ends of each proportional valve can be completely eliminated, and all high-speed switch valves on the oil path are in a normally open state, so that work loss of the high-speed switch valves is reduced, and the working service life of the oil path is prolonged.

Description

technical field [0001] The invention belongs to the field of electro-hydraulic control systems, and in particular relates to a digital fluid pilot-driven double-spool programmable control hydraulic valve and a control method thereof. Background technique [0002] The electro-hydraulic proportional valve controls the displacement of the spool of the working valve through the signals at both ends, so that the size of the valve port changes, and thus completes the pressure and flow output components proportional to the input signal. Electro-hydraulic proportional valve has many advantages such as various forms, high control precision, strong anti-pollution ability, easy docking with computer, etc., and its application field is expanding day by day. Therefore, the structure and control scheme of the electro-hydraulic proportional valve are the key factors to judge whether a hydraulic system is advanced. [0003] The traditional electro-hydraulic proportional valve is controlled...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B21/02
CPCF15B13/021F15B21/02
Inventor 钟麒谢耿何贤剑王军帅琨李研彪
Owner ZHEJIANG UNIV OF TECH
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