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Hydraulic valve, hydraulic valve group and hydraulic valve control method

A hydraulic valve block and hydraulic valve technology, applied in the hydraulic valve block, hydraulic valve, the control field of the hydraulic valve, can solve the problems of difficult to guarantee accuracy, inconvenient processing and assembly, long matching surface, etc., and meet the requirements of coaxiality The effect of reducing, improving work efficiency and work stability, and improving the life of the spool

Active Publication Date: 2011-12-28
SANY AUTOMOBILE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a hydraulic valve, which can solve the problems of long mating surface between the valve core and the valve body, difficulty in ensuring precision, and inconvenient processing and assembly.

Method used

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  • Hydraulic valve, hydraulic valve group and hydraulic valve control method
  • Hydraulic valve, hydraulic valve group and hydraulic valve control method
  • Hydraulic valve, hydraulic valve group and hydraulic valve control method

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Embodiment Construction

[0058] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0059] figure 2 , Figure 2a , Figure 2b They are respectively the structural schematic diagram of the hydraulic valve according to the first embodiment of the present invention, and the schematic diagrams when the hydraulic valve is in the left position and the right position.

[0060] Such as figure 2 As shown, in the first embodiment of the present invention, the hydraulic valve includes a valve body 10, a valve core and a valve sleeve, the valve sleeve is sleeved on the valve core, and the valve core and the valve sleeve are arranged in the cavity of the valve body 10. In the inventive hydraulic valve, the spool is a split spool, including a first spool 31 and a second spool 32, both...

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Abstract

A hydraulic directional control valve and the control method thereof, a hydraulic control valve set, and a hydraulic control system and engineering machinery comprising the said valve or the valve set. The said hydraulic control valve comprises: a valve body (10); a valve pocket sleeve provided in the cavity of the valve body (10); a valve plug provided in the valve pocketsleeve. The valve pocket sleeve is a split type valve pocketsleeve, comprising at least a first valve pocket sleeve (21) and a second valve pocket sleeve (22). The valve plug is a split type valve plug, comprising at least a first valve plug (31) and a second valve plug (32). The said first valve plug (31) and the second valve plug (32) are in a synchronous working conditionstate. The hydraulic directional control valve is provided with at least three fluid ports, and at least two working positions may be realized. The split type valve pocket sleeve and valve plug impart offer the following benefits to the valve plug: simple valve plug assembly, less likelihood to of valve plug getting stuck, strong high resistance to contamination, good interchangeability of parts, and much longer overall service life.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission and control, in particular to a hydraulic valve and a hydraulic valve group for controlling the direction or flow of liquid in a hydraulic system, and also relates to a control method of the hydraulic valve. Background technique [0002] Hydraulic valves used for fluid direction control or flow control in hydraulic systems are widely used and there are many types. According to the operation mode, there are electric, hydraulic, electro-hydraulic, etc. According to the structure of the valve, there are various forms such as slide valve and rotary valve. [0003] figure 1 Shown is an existing spool type hydraulic valve structure. Such as figure 1 As shown, the hydraulic valve includes a first end cover 1', a first return spring 2', an integral valve core 3', a valve body 4', a second return spring 5' and a second end cover 6'. The integral valve core 3' is arranged in the cavity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
CPCF16K27/041F16K11/07F15B13/0402
Inventor 易小刚刘永东
Owner SANY AUTOMOBILE MFG CO LTD
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