Hydraulic Pilot Independent Load Multi-way Valve Using Compression-Torsion Two-Dimensional Spring
A hydraulic pilot and multi-way valve technology, applied in the hydraulic and pneumatic fields, can solve problems such as immature technology, achieve the effects of reducing costs, fast and stable movement, and improving system efficiency
Active Publication Date: 2016-04-06
BEIHANG UNIV
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Problems solved by technology
[0002] In the field of construction machinery hydraulics and pneumatics, multi-way valves are key components of hydraulic and pneumatic control technology. Due to the complexity of load conditions and the improvement of system efficiency, independent load multi-way valves have become a research hotspot in the field of construction machinery. It will The two load ports of the traditional three-position four-way reversing valve are separated, and each independently controls the flow and pressure, which removes the coupling between the two. At present, the independent load multi-way valve is still in the early stage of development, and the related technology is not yet mature.
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[0013] Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.
[0014] figure 1 A perspective view of a hydraulic pilot independent load multi-way valve using a compression-torsion two-dimensional spring provided for an embodiment of the present invention; figure 2 A cross-sectional view of a hydraulic pilot independent load multi-way valve using a compression-torsion two-dimensional spring provided for an embodiment of the present invention. Such as figure 1 , figure 2 As shown, the hydraulic pilot indep...
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The invention provides a hydraulic pilot-operated independent load multi-way valve adopting a pressure-torsion two-dimensional spring. The hydraulic pilot-operated independent load multi-way valve comprises a plurality of independent load valves, wherein each independent load valve comprises a valve body, two valve cavities are arranged in each valve body, each valve body is provided with an oil supply port and an oil return port which are respectively communicated with the valve cavities, each valve cavity is communicated with a control oil port, a valve core is arranged in each valve cavity, one end of each valve core is connected with a hydraulic pilot-operated structure, the other end of each valve core is connected with the pressure-torsion two-dimensional spring, the oil supply ports of the independent load valves are communicated, and the oil return ports of the independent load valves are communicated. According to the scheme provided by the invention, the hydraulic pilot-operated structure is adopted to serve as a pilot-operated stage, so that the cost is reduced, and the performance is improved. Mechanical negative feedback for pilot-operated rotation is realized in a manner that the pressure-torsion two-dimensional spring has a function of conversion between axial displacement and rotation of the valve cores.
Description
technical field [0001] The invention relates to the technical fields of hydraulic pressure and pneumatics, in particular to a hydraulic pilot independent load multi-way valve using a compression-torsion two-dimensional spring. Background technique [0002] In the field of construction machinery hydraulics and pneumatics, multi-way valves are key components of hydraulic and pneumatic control technology. Due to the complexity of load conditions and the improvement of system efficiency, independent load multi-way valves have become a research hotspot in the field of construction machinery. It will The two load ports of the traditional three-position four-way reversing valve are separated, and each independently controls the flow and pressure, which removes the coupling between the two. At present, the independent load multi-way valve is still in the early stage of development, and the related technology is not yet mature. Contents of the invention [0003] A brief overview of...
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IPC IPC(8): F15B13/02F15B13/16
Inventor 焦宗夏董文浩吴帅尚耀星
Owner BEIHANG UNIV