Rotary valve type large torque hydraulic corner self-servo valve

Abstract

The invention relates to a rotary valve type large torque hydraulic corner self-servo valve, which has the technical scheme that: a valve body (10) is concentrically arranged in a cylinder body cylindrical cavity (18); a valve sleeve (8) is concentrically arranged in a valve body cylindrical cavity (27); a right end of a valve plug (9) penetrates through the valve sleeve (8) so as to be concentrically arranged in the valve body cylindrical cavity (27); and an output shaft of a motor (3) is in key joint with an inner hole (46) on a left end of the valve plug (9) concentrically. Fixed stops (7) are respectively arranged on an upper part and a lower part of an inner wall of a cylinder body (4), and are in movable fit with the valve body (10); two blades (17) are fixed on an outer wall of the valve body cylindrical cavity (27), are arranged at an angle of 180 degrees, and are in movable fit with the cylinder body (4); and the fixed stops (7) and the blades (17) are in staggered arrangement with the blades (17). The rotary valve type large torque hydraulic corner self-servo valve has the characteristics of simple structure, easiness in processing, balance in stressing of the valve plug, large output torque, good dynamic property, flow gain linear, quick respond speed, and high control accuracy.

Description

technical field [0001] The invention belongs to the technical field of servo valves, and in particular relates to a rotary valve type high-torque hydraulic rotary angle self-servo valve. Background technique [0002] The hydraulic angle servo technology is a combination of hydraulic pressure and motor technology. Using their respective advantages, the small torque of the motor directly drives the valve core to open the valve port, allowing high-pressure oil to act on the valve body, thereby obtaining a large output torque. The hydraulic angle self-servo valve is the core component of the hydraulic control system. It has the characteristics of high precision and fast response. It is widely used in high-precision mechatronics systems, aerospace airborne drive systems, and large-scale test equipment. Therefore, Get the attention of scientific and technological personnel at home and abroad. [0003] At present, associate professor Zhu Xinglong of Yangzhou University in China an...

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Problems solved by technology

[0004] The patented technology of "An easy-to-control hydraulic angle self-servo valve" (CN 201210033081.6) overcomes the above-mentioned problems. It has the characteristics of good characteristics, small servo blind area and easy control, but it has complex structure, especially there are many complicated inner oil passages inside the valve core and valve sleeve, it is difficult to guarantee the machining accuracy, and there are still problems that the output torque is not large enough and the use of circular Shaped valve port design causes its flow gain to be non-linear, which in turn leads to the problem of insufficient precision

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