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Multi-way valve and hydraulic control system

A multi-way valve and total control technology, applied in the direction of fluid pressure actuators, servo motors, servo motor components, etc., can solve problems such as complex pipelines, and achieve the effect of simple connection pipelines

Active Publication Date: 2016-01-13
XCMG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its advantage is that each action limit is independent of each other. The disadvantage is that in order to realize the control of the pump, a complex shuttle valve group valve block needs to be connected in series on the pilot oil circuit to screen out the maximum pilot control pressure, and the pipeline is more complicated.

Method used

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  • Multi-way valve and hydraulic control system
  • Multi-way valve and hydraulic control system
  • Multi-way valve and hydraulic control system

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0032] The present invention provides a kind of multi-way valve, adopts such as figure 2 and image 3 A combination of multiple worksheets shown in . exist figure 2 and image 3 Among them, the multi-way valve V is composed of working couplets V1-V7, among which the working couplets V1 and V7 are used to connect the main pumps 1 and 1', so it can be called the oil inlet joint, and the working couplet V4 is between the two working couplets V2-V7. Between V3 and V5-V6, it can be called the middle joint. Among them, the main reversing valve and the corresponding pilot oil circuit switch control structure are respectively set in the working links V2-V3 and V5-V6. figure 2 and image 3 The hydraulic principle structures of the corresponding main reversing valves 9 and 9' are described by taking working links V2 and...

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Abstract

The invention relates to a multi-way valve and a hydraulic control system. The multi-way valve adopts a combined form of a plurality of working links, and a main reversing valve and a corresponding pilot oil circuit switch control structure are arranged in part of the working links. The pilot oil circuit switch The control structure is used to control the on-off of the pilot pressure oil between the pilot control oil port and the pilot control chamber of the main reversing valve, so as to realize the working or unloading of the corresponding working couple of the main reversing valve. Compared with the existing hydraulic control system, the present invention can not only realize independent action limitation, but also does not set a special integrated valve block for the main reversing valve of each working union to control the pilot pressure oil, so no matter in structure or connection The pipeline is simpler.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a multi-way valve and a hydraulic control system. Background technique [0002] As a special lifting equipment, the crane usually needs to realize the following actions: lifting hook (hereinafter referred to as: lifting), lifting jib (hereinafter referred to as: luffing), slewing, walking and other operations. Due to the limited height of the boom frame of the crane, if the hook is lifted too high, the boom frame will be damaged, and if the hook is dropped too low, the number of remaining turns of the wire rope on the winch may be too small, which will cause the accident that the wire rope is separated from the winch; The angle of the boom should not be too large, otherwise it may cause the danger of the boom tilting backward, and the angle of the boom should not be too small, so as not to cause the vehicle to be unstable enough to cause a rollover accident. In order to meet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02F15B11/17
Inventor 陈远泽罗康松余钦伟张伟
Owner XCMG CONSTR MACHINERY
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