Design method of a constant-pressure oil-supply anti-eccentric load horizontal servo cylinder
A design method and technology of servo oil cylinders, applied in the field of servo hydraulics, can solve the problems affecting the output characteristics and reliability of servo cylinders, eccentric friction between pistons and cylinders, etc., so as to increase the bearing capacity and anti-eccentric load capacity, and prolong the reliability. and longevity effects
Active Publication Date: 2016-04-06
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
In practical applications, due to installation, load force characteristics or other reasons, there will be a certain radial force on the piston rod, which will cause partial friction between the piston rod and the guide sleeve, the piston and the cylinder, which will seriously affect the output characteristics and reliability of the servo cylinder. sex
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[0025] The present invention will be described in detail below with reference to the drawings.
[0026] Such as figure 1 As shown, the horizontal servo cylinder 1 of the present invention includes a cylinder block 2, a cylinder head 3, and a piston rod 4. A guide sleeve of the cylinder head 4 is provided with one or more pairs of up and down asymmetric oil cushions along the axial direction. The piston rod 4 The lower oil cushion is a supporting oil cushion, which is composed of an oil cavity 61, a central oil inlet 62, an oil sealing edge 63, and an oil return groove 64. The oil pad on the upper side of the piston rod 4 is a counter-force oil pad, which is composed of an oil cavity 51, a central oil inlet 52, an oil sealing edge 53, and an oil return groove 54. An independent oil supply system is used to feed pressure oil to each oil pad at the same time. The oil supply system consists of an oil tank 91, a hydraulic pump 92, an overflow valve 93 and a filter 94. The oil outlet ...
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The invention provides a designing method of a constant-pressure oil supply type load-deflection resistance horizontal type servo oil cylinder. The horizontal type servo oil cylinder comprises a cylinder body, a cylinder cover and a piston rod, wherein a guide sleeve of the cylinder cover is provided with oil pads not symmetrical up and down in the axis direction, the oil pad on the lower side of the piston rod is a supporting oil pad, the oil pad on the upper side of the piston rod is a bearing reaction oil pad, a hydraulic loop in front of a center oil inlet of each oil pad is connected with a damper, an independent oil supply system supplies pressure oil to the oil pads at the same time, and the pressure of the pressure oil provided by the oil supply system keeps unchangeable. According to the servo oil cylinder designed according to the method, in the whole working process, the piston rod and a piston keep a certain gap all the time, the guide sleeve and the cylinder body also keep a certain gap all the time, oil film lubrication is formed, friction between the piston rod and the guide sleeve as well as between the piston and the cylinder body is reduced, the bearing capacity and the load-deflection resistance capacity of the system are improved, the reliability of the horizontal type servo oil cylinder is greatly improved, and the service life of the horizontal type servo oil cylinder is prolonged greatly.
Description
Technical field [0001] The invention belongs to the field of servo hydraulics, and specifically relates to a design method of a constant pressure oil supply type anti-eccentric load horizontal servo cylinder, which is suitable for large metallurgical equipment under severe working conditions such as high and low speed, high frequency, heavy load, and radial force. And other industries. Background technique [0002] Servo cylinder is the actuator of hydraulic servo system to achieve high precision and high response control. The performance of the servo cylinder directly affects the control accuracy and dynamic and static quality of the system. Therefore, the design of the servo cylinder needs to have excellent guiding performance, low friction, no leakage, no crawling, no stagnation, small inertia, high response, Long life and other advantages can better meet the requirements of the static accuracy and dynamic quality of the servo system. Generally, the force state of the oil cy...
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IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/14F15B15/1423F15B15/20
Inventor 黄庆学马丽楠安高成张其生曹一兵宁轩
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY