Reversing link of load-sensitive multi-way valve
A load-sensing and reversing coupling technology, which is applied in servo motor components, fluid pressure actuation system testing, mechanical equipment, etc., can solve the problems of large volume and high manufacturing cost of load-sensing multi-way valve reversing couplings
Pending Publication Date: 2022-07-01
DANFOSS POWER SYSTEMS (ZHEJIANG) CO LTD
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Problems solved by technology
[0003] However, the existing load-sensing multi-way valve reversing unit adopts a relatively complicated structural design in order to achieve the desired function, resulting in a large volume and high manufacturing cost of the load-sensing multi-way valve reversing unit
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[0045] The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals refer to the same or similar parts. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, and should not be construed as a limitation of the present invention.
[0046] Furthermore, in the following detailed description, for convenience of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. Obviously, however, one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagram form in order to simplify the drawings.
[0047] like figure 1 As s...
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A load-sensitive multi-way valve reversing link comprises a valve body, a compensation valve and a reversing valve are formed in the valve body, the compensation valve comprises a compensation valve hole formed in the valve body and a compensation valve element arranged in the compensation valve hole, and a compensation valve oil inlet cavity, a compensation valve oil outlet cavity, a spring side control cavity and a spring-free side control cavity are formed in the compensation valve hole. The reversing valve comprises a reversing valve hole formed in a valve body and a reversing valve element arranged in the reversing valve hole, and the reversing valve element controls the communication relation among a main oil inlet cavity, a first working oil cavity, a second working oil cavity, a first oil return cavity, a second oil return cavity, a first load-sensitive feedback pressure tapping and a second load-sensitive feedback pressure tapping which are formed in the reversing valve hole. The compensation valve oil outlet cavity is communicated with the main oil inlet cavity; the load-sensitive multi-way valve reversing coupler further comprises a feedback oil way formed in the valve body, and the feedback oil way is used for communicating one of the first load-sensitive feedback pressure tapping opening and the second load-sensitive feedback pressure tapping opening with the spring side control cavity according to the position of the reversing valve element in the reversing valve hole.
Description
technical field [0001] The present invention relates to a multi-way valve reversing coupling, in particular, to a load-sensing multi-way valve reversing coupling which can be used in a hydraulic system. Background technique [0002] In the prior art, the operation of mobile machines including construction vehicles requires the combined movement of multiple hydraulic actuators. Therefore, multiple hydraulic reversing valves are required to separately control the movement speed and direction of each actuator. A multi-way valve is a combination of reversing valves that can control multiple hydraulic actuators. It is based on two or more reversing valves, and integrates reversing valves, check valves, safety valves, and shuttle valves. Function integration valve. The load-sensing multi-way valve is a common multi-way valve, which is provided with a compensation valve, so that when each actuator works, the working flow is only related to the opening of the valve core, and has no...
Claims
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IPC IPC(8): F15B13/02F15B19/00
CPCF15B13/021F15B13/028F15B19/00
Inventor 马忠孝翟立奎何慎之
Owner DANFOSS POWER SYSTEMS (ZHEJIANG) CO LTD