Designing method of constant-pressure oil supply type load-deflection resistance horizontal type servo oil cylinder

Abstract

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 in particular relates to a design method of a constant-pressure oil-supply type anti-eccentric load horizontal servo cylinder, which is suitable for large-scale metallurgical equipment under severe working conditions such as high and low speed, high frequency, heavy load, and bearing radial force. and other industries. Background technique [0002] The servo cylinder is the actuator of the 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, so 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 static precision and dynamic quality of the servo system. Generally, the stress s...

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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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