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Half integral load-sensing multiway valve

A load-sensing, semi-integrated technology used in the field of multi-way valves to achieve high reliability and compact structure

Active Publication Date: 2012-09-19
龙工(上海)精工液压有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that each working actuator realizes compound action when the flow required by the working actuator is greater than the limit flow of the pump, and to provide a semi-integral load with compact structure, high reliability, energy saving, and anti-saturation function Sensing multi-way valve

Method used

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  • Half integral load-sensing multiway valve

Examples

Experimental program
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Effect test

Embodiment 1

[0021] like Figure 1-Figure 2 As shown, a semi-integral load sensing multi-way valve provided by the present invention is mainly composed of an oil inlet valve body assembly 101, a front valve body assembly 102, a rear valve body assembly 103 and a tail seat 104, etc. The oil inlet chamber P, the oil return chamber T, and the pressure feedback chamber Ps of the oil inlet valve body assembly 101 are connected with the oil inlet chamber P, the return chamber Ps of the front valve body assembly 102, and the rear valve body assembly 103. The oil chamber T and the pressure feedback chamber Ps are connected.

[0022] like Figure 3-Figure 5 As shown, the oil inlet valve body assembly 101 includes an oil inlet valve body 1, an oil inlet chamber P, an oil return chamber T, and a pressure control chamber 1-1. The reversing spool 22 of the working joint oil circuit moves, (that is, when the system is working), the neutral position unloading spool 7 is closed, and the oil inlet chambe...

Embodiment 2

[0029] like Figure 1-Figure 2 As shown, a semi-integral load sensing multi-way valve provided by the present invention is mainly composed of an oil inlet valve body assembly 101, a front valve body assembly 102, a rear valve body assembly 103 and a tail seat 104, etc. The oil inlet chamber P, the oil return chamber T, and the pressure feedback chamber Ps of the oil inlet valve body assembly 101 are connected with the oil inlet chamber P, the return chamber Ps of the front valve body assembly 102, and the rear valve body assembly 103. The oil chamber T and the pressure feedback chamber Ps are connected.

[0030] like Figure 3-Figure 5 As shown, the oil inlet valve body assembly 101 includes an oil inlet valve body 1, an oil inlet chamber P, an oil return chamber T, and a pressure control chamber 1-1. The reversing spool 22 of the working joint oil circuit moves, (that is, when the system is working), the neutral position unloading spool 7 is closed, and the oil inlet chambe...

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Abstract

The invention discloses a half integral load-sensing multiway valve comprising an oil inlet linkage valve body assembly. The oil inlet linkage valve body assembly is sequentially connected with a front valve body assembly, a rear valve body assembly and a tailstock, and an oil inlet cavity, an oil return cavity and a pressure feedback cavity of the oil inlet linkage valve body assembly are communicated with the oil inlet cavities, the oil return cavities and the pressure feedback cavities of the front valve body assembly and the rear valve body assembly. The half integral load-sensing multiway valve has the characteristics of compact structure, high reliability, energy conservation and antisaturation performance.

Description

technical field [0001] The invention relates to a semi-integral load sensing multi-way valve, which belongs to the field of multi-way valves. Background technique [0002] The multi-way valve is an important part of the hydraulic system of the excavator. It constitutes the main part of the hydraulic system of the excavator. It determines the oil supply route and mode of the hydraulic pump to each hydraulic action element, and the flow distribution of the hydraulic action elements when they are combined. It determines the kinematics and dynamics characteristics of the excavator during operation, action priority and cooperation, combined oil supply and straight-line walking, etc. Its design basis is whether it can better meet the requirements of the excavator's operation and working conditions. The traditional small excavator load sensing multi-way valve mostly adopts the structural type of multi-piece stacking and pre-valve pressure compensation, that is, the combination of m...

Claims

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Application Information

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IPC IPC(8): F15B13/02
Inventor 陈超汪锋白永刚曲春秋王思华
Owner 龙工(上海)精工液压有限公司
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