Deflecting plate jet flow servo valve of valve body structure based on additive manufacturing
A technology of additive manufacturing and deflection plate, which is applied in the direction of servo motor components, fluid pressure actuators, mechanical equipment, etc., can solve the problems of low positioning accuracy of jet cover, failure of plug seal, low installation and adjustment efficiency, etc., to achieve Avoid the risk of oil leakage, reduce the difficulty of assembly and adjustment, and improve the efficiency of assembly and adjustment
Inactive Publication Date: 2019-03-26
XIAN FLIGHT SELF CONTROL INST OF AVIC
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Problems solved by technology
[0004] The invention utilizes the advantages of free forming of additive manufacturing technology to solve the problems of plugging outside the valve body, low installation and adjustment efficiency, and risk of plugging seal failure. The design is integrated, which solves the problems of low positioning accuracy of the upper and lower jet cover plates and easy zero deviation, thereby improving the reliability of electro-hydraulic servo valve products
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[0013] The deflection plate jet electro-hydraulic servo valve based on the additive manufacturing valve body structure mainly includes the valve body (4), valve sleeve (5), valve core (7), torque motor assembly (2), and jet flow assembly (3); A valve sleeve (5) is installed inside the valve body (4), and a valve core (7) is installed inside the valve sleeve (5). ) and the left and right ends are connected to the end cover (8) by screws, and the torque motor assembly (2) is installed on the upper end surface of the valve body (4) by screws to drive the pre-stage movement, change the pressure on both sides of the valve core, and drive the valve core to move And form a feedback; the jet assembly (3) is installed with sliding fit inside the upper shell of the valve body (4), and is positioned by the positioning pin in the valve body (4); the outer cover (1) is installed on the valve body (4), and is used to To protect the torque motor assembly (2), the bottom surface of the valve ...
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The invention belongs to the hydraulic servo control technology, and particularly relates to a deflecting plate jet flow servo valve of a valve body structure based on additive manufacturing. The deflecting plate jet flow servo valve of the valve body structure based on additive manufacturing comprises a valve body, a valve sleeve, a valve element, a torque motor assembly and a jet flow assembly.The valve sleeve is installed in the valve body, the valve element is installed in the valve sleeve, and the two ends of the valve element are provided with valve element end caps for carrying out limitation. The left end and the right end of the valve body are connected with end covers through screws. The torque motor assembly is installed on the upper end face of the valve body through screws and used for driving a prestage to move, the pressures on the two sides of the valve element are changed, the valve element is driven to move, and feedback is formed. The jet flow assembly is installedin an upper shell in the valve body in a sliding fit manner. Positioning pins carry out positioning, and based on the additive manufacturing technology, the valve body, the upper shell of the jet flowassembly and the positioning pins are designed into a whole. According to the structure, by means of the integrated structure of the valve body, the upper shell and the positioning pins, it does notneed to carry out press fitting on the end caps, the assembling and adjusting difficulty is lowered, the assembling and adjusting efficiency is improved, the oil leakage risk caused by failures of theend caps is avoided, and the product reliability is improved.
Description
technical field [0001] The invention belongs to the hydraulic servo control technology, and in particular relates to a deflector jet servo valve based on an additive manufacturing valve body structure. Background technique [0002] As a typical conversion, amplification and control element, the electro-hydraulic servo valve is an important part of the servo control system. The deflection plate servo valve adopts the deflection jet amplifier instead of the double nozzle baffle hydraulic amplifier. Compared with the traditional nozzle-baffle electro-hydraulic servo valve, it has the advantages of high reliability, high performance, small size and light weight, and is widely used in Large aircraft, launch vehicles and many other aerospace fields. Due to the complexity of the internal oil circuit of the servo valve body, the communication of the oil circuit of the typical deflector jet servo valve body requires cross-drilling from the outer wall of the valve, and a plug on the ...
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IPC IPC(8): F15B13/02
CPCF15B13/021
Inventor 任晓军刘志会吕登州曹伟李凌
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC