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Common valve body structure and valve assembly for positive flow and negative flow

A negative flow, general-purpose valve technology, applied in the direction of valve housing structure, fluid pressure actuating device, valve details, etc., can solve the problems of non-common parts production costs, inconvenient management, etc., to reduce research and development costs and management costs , The effect of reducing the labor intensity of workers

Active Publication Date: 2017-06-30
SHANDONG LINGONG CONSTR MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a common positive flow and negative flow valve body structure and valve assembly to overcome the problems of high production cost and inconvenient management caused by non-common parts and components in the production of positive flow system and negative flow system in the prior art. defect

Method used

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  • Common valve body structure and valve assembly for positive flow and negative flow
  • Common valve body structure and valve assembly for positive flow and negative flow
  • Common valve body structure and valve assembly for positive flow and negative flow

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] The present invention applies the CAST concept to carry out an innovative modular design on the structure of the central bypass oil passage 2 on the main valve body 1, and leads out a modular connection oil passage 3 on each of the left and right valve bodies 1 to realize the main control valve body 1 It is commonly used in positive flow valves and negative flow valves, so as to realize a common valve body structure and valve assembly in positive flow systems and negative flow systems.

[0027] Such as Figure 1 to Figure 4 As shown, a general valve body structure for positive flow and negative flow includes a valve body 1, which is provided with a central bypass oil passage 2, a return oil passage 4 and a modular connection oil passage 3, and the modular connection oil passage 3 respectively communicate with the central bypass oil passage 2 and the oil return passa...

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Abstract

The invention discloses a valve body structure and a valve assembly universally used for positive flow and negative flow and belongs to the field of engineering machinery. According to the technical scheme, the valve body structure is characterized in that the valve body structure comprises valve bodies, a central bypass oil duct and a return oil duct are arranged in each valve body, each valve body is further provided with a modular connection oil duct which is communicated with the corresponding central bypass oil duct and the corresponding return oil duct, each modular connection oil duct is provided with an outer connector, and a screwed plug or a negative flow feedback valve is installed on each outer connector. The invention further discloses the valve assembly universally used for positive flow and negative flow. The valve assembly comprises at least one valve body and cartridge valves installed on the valve bodies. The oil ducts behind the central bypass valves are innovatively arranged in the main valve assembly and the screwed plugs interchange with the negative flow feedback valves, so that conversion between a positive flow valve and a negative flow valve of an excavator is achieved and the production cost and management difficulty are lowered for manufacturers.

Description

technical field [0001] The invention relates to a hydraulic control component of an excavator, in particular to a universal valve body structure and valve assembly for positive flow and negative flow. Background technique [0002] The multi-way valve is the core component of the hydraulic system of the excavator. The multi-way valve determines the oil supply line and mode of the hydraulic pump to each hydraulic action element, the flow distribution when multiple hydraulic actuators act at the same time, and how to realize the composite action, which determines the kinematics and dynamics characteristics of the excavator during operation. , Action priority and coordination, combined oil supply and straight-line walking, etc. [0003] According to the classification of flow control, the open center hydraulic system is divided into positive flow system and negative flow system. The negative flow system acts on the variable adjustment mechanism of the pump by collecting the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K27/00F15B13/02F15B13/16E02F9/22
CPCE02F9/2267F15B13/02F15B13/16F16K27/00
Inventor 迟峰支开印董立队杨典作李强刘震
Owner SHANDONG LINGONG CONSTR MACHINERY
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