Double-oil-film damping bearing structure with elastic support

Abstract

The invention discloses a double-oil-film damping bearing structure with an elastic support, relates to a bearing vibration attenuation support structure, and in order to solve the problem of poor reliability when adding a damping vibration attenuation structure to an existing bearing structure. According to the double-oil-film damping bearing structure, an inner race of a damping bearing is in clearance fit with a rotor, and the inner race of the damping bearing supports operation of the rotor with oil films; a cage strip is semicircle arc-shaped, and an inner ring and an outer ring are fixedby the cage strip; the inner race of the damping bearing is fixed to the inner ring, an outer race of the damping bearing is fixed to the outer ring, and the inner race of the damping bearing is in clearance fit with the outer race of the damping bearing; an oil groove is formed in the inner race of the damping bearing, an oil inlet hole is formed in the outer race of the damping bearing, the position of the oil hole corresponds to the position of the oil groove, and the sealing installation between the inner race of the damping bearing and the outer race of the damping bearing is achieved through a sealing ring; and a bearing seat is installed on the outer race of the damping bearing in a positioned mode. The double-oil-film damping bearing structure has the beneficial effects that the reliability is improved, the power density of the whole machine is increased, the vibration attenuation and frequency shift of a unit are achieved, and the requirements of high-speed mechanical equipment are met.

Description

technical field [0001] The invention relates to a bearing vibration damping support structure. Background technique [0002] The cantilever structure of squirrel-cage elastic support commonly used today has inevitable disadvantages in axial size; although in recent years, some studies have proposed to replace squirrel-cage elastic support with foldable elastic support to optimize the structure size, but this The structure is prone to high stress at the turnback; how to design a reasonable elastic support to achieve the optimization of the bearing structure is very necessary; in addition, how to avoid resonance is the primary problem in the study of rotor dynamics, and the bearing as a rotor system must exist It is widely used in aviation, ship engines and rear transmission systems, which greatly affects the dynamic characteristics of the entire shaft system; the existing squeeze film damper can reduce vibration and adjust the critical speed. , but a new structure needs to b...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor reliability when adding a damping structure to the existing bearing structure

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