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Electro-hydraulic reversing valve

An electro-hydraulic reversing valve and spool technology, applied in the field of hydraulic solenoid valves, can solve the problems of low control precision, single control mode, complex structure, etc., and achieve the effect of fast response and high control precision

Inactive Publication Date: 2017-01-11
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its control precision is low, its control mode is single and its structure is relatively complex, and it is generally used as a separate digital valve, and is rarely used as a pilot valve.

Method used

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  • Electro-hydraulic reversing valve
  • Electro-hydraulic reversing valve
  • Electro-hydraulic reversing valve

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Embodiment Construction

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like figure 1 As shown, an electro-hydraulic reversing valve includes a left pilot valve 1; a right pilot valve 1'; a left main valve 2; The oil passage of the oil inlet P1' of the right pilot valve 1' is in vertical communication with the oil passage of the oil inlet P' of the pilot valve inside the pilot valve body, and the oil passage of the oil outlet T1 of the left pilot valve 1 is vertically connected. The channel is vertically communicated with the oil channel of the oil return port T1' of the right pilot valve 1' inside the pilot valve body and the oil channel of the oil return port T' of the pilot valve. The left pilot valve 1 controls the oil of the oil port A1. The upper end cavity of the left main valve 2 spool is communicated with the inner channel of the main valve body through the pilot valve body, and the oil passage of the left pilot valve 1 cont...

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PUM

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Abstract

The invention discloses an electro-hydraulic reversing valve and belongs to the field of hydraulic valves. The electro-hydraulic reversing valve comprises a left pilot valve, a right pilot valve, a left main valve and a right main valve and is characterized in that the pilot valve cores are independently controlled by a voice coil motor and are high in response speed and high in control accuracy, main valve cores are respectively and independently controlled by the pilot valves, and the best dual-valve-core combination control scheme can be determined according to the working condition of actual platform usage.

Description

technical field [0001] The invention relates to the technical field of hydraulic solenoid valves, in particular to an electro-hydraulic reversing valve with fast response speed, high control precision, independent configuration of control modes and flexible combination. Background technique [0002] As an important valve type of hydraulic transmission and control system, electro-hydraulic valve is mainly composed of pilot valve and main valve. Weak current controls large flow and high pressure. However, the general pilot valve is an ordinary electromagnetic reversing valve, which can only perform simple oil circuit reversing, and cannot precisely control the pressure and flow of the oil. If the working conditions change, for example, the actuator requires different moving speeds. , you need to use electro-hydraulic proportional valve to achieve. [0003] Although electro-hydraulic proportional valve can perform linear proportional control on pressure and flow, it has disad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/043F15B13/06
CPCF15B13/043F15B13/06
Inventor 胡万强姚宁董永强岑辉
Owner XUCHANG UNIV