Mechanically-adjustable-clearance semi-active radial sliding bearing

Abstract

The present invention relates to a mechanically-adjustable-clearance semi-active radial sliding bearing including a lower tile cover, a regulator, a lower tile, an upper tile, a spring, a hydraulic system and a signal acquisition system. The mechanically-adjustable-clearance semi-active radial sliding bearing has the following advantages: first, the regulator rotates to realize the radial movement of the lower tile so as to adjust a bearing relative clearance, bearing vibration can be reduced, and bearing positioning accuracy can be improved; second, a driving device of the regulator is a servo motor for driving, control precision is high, and a high torque can be achieved, so that bearing capacity is high; third, the signal acquisition system is capable of real-time acquisition of displacement and acceleration signals of the bearing, and timely feeds the signals back to the regulator after processing of the signals, so that the bearing relative clearance can be timely changed, and intelligent control of the bearing can be realized; and fourth, the lower tile and the regulator are connected by the spring to play an elastic support role, bearing damping can be increased, and the bearing vibration can be reduced.

Description

technical field [0001] The invention relates to a mechanically adjustable gap semi-active radial sliding bearing. Background technique [0002] High-speed rotating machinery technology is widely used in various rotating machinery devices such as machine tools, gas turbines, aeroengines, and industrial compressors, and plays a very important role in national economic fields such as electric power, aviation, machinery, chemicals, and textiles. With the development of industrial technology, the requirements for rotating machinery are getting higher and higher. High speed, high precision, and high load have always been the goals pursued by the development of rotating machinery technology. Sliding bearings are the key support of rotating machinery, and their performance directly determines the rotating machinery. Mechanical success or failure. Due to the dynamic pressure bearing mechanism of traditional radial sliding bearings, the rotors it supports work at different rotation c...

AI Technical Summary

Problems solved by technology

This is very unfavorable for some equipment with high precision requirements, such as high-precision grinding machines

Some scholars have proposed a new type of passive vibration-reducing radial sliding bearing structure, such as a floating ring bearing, which is equivalent to adding an elastic support to the traditional sliding bearing seat and applying it on a high-precision grinding machine, which has a good vibration reduction effect. However, when the sliding bearing is working, due to the influence of the bearing structure itself and the external excitation, different rotation centers often appear, causing vibration and noise

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