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

A hydraulic reversing valve and spool technology, applied in multi-way valves, valve devices, valve details, etc., can solve the problems of long mating surface between spool and valve body, difficulty in ensuring accuracy, inconvenient processing and assembly, etc., to achieve Improve work efficiency and work stability, reduce coaxiality requirements, and have good parts interchangeability and reusability

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

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a hydraulic reversing 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 in the hydraulic reversing valve.

Method used

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

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Embodiment Construction

[0064] 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.

[0065] figure 2 , Figure 2a , Figure 2b They are respectively the structural schematic diagram of the hydraulic reversing valve according to the first embodiment of the present invention, and the schematic diagrams when the hydraulic reversing valve is in the left position and the right position.

[0066] Such as figure 2 As shown, in the first embodiment of the present invention, the hydraulic reversing valve includes a valve body 10, a valve core and a valve sleeve, the valve sleeve is arranged in the cavity of the valve body, and the valve sleeve is a split valve sleeve, including A valve sleeve 21 and a second valve sleeve 22 , the valve core is disposed in the valve sleeve, and the...

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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 reversing valve and a hydraulic reversing valve group for controlling the direction or flow of liquid in a hydraulic system, and also relates to a control method for the hydraulic reversing valve. Background technique [0002] Hydraulic directional valves 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 reversing valve structure. Such as figure 1 As shown, the hydraulic reversing 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'...

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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