Flexible damping bearing bush

Abstract

The invention belongs to the application field of rotating machinery and particularly relates to a flexible damping bearing bush which is composed of a bush outer ring, a bush inner ring, a bush mainbody, a damping piston and a sealing ring, wherein an annular hydraulic oil cavity is formed in the bush outer ring; a plurality of piston cavities are uniformly distributed in the bush main body in the circumferential direction; the piston cavities communicate with the annular hydraulic oil cavity through damping holes formed in the bush main body; the damping piston is mounted in the piston cavities uniformly formed in the circumferential direction; the root part of the damping spring is fixedly connected with the bush inner ring and does reciprocating motion in the piston cavities to extrude or absorb hydraulic oil; the sealing ring is arranged between the damping piston and the piston cavities and is mounted in a sealing ring mounting groove at the upper section of the damping piston;the bush outer ring, the bush main body and the bush inner ring are sequentially and concentrically stacked; and a damping device is further arranged between the bush main body and the bush inner ring.

Description

technical field [0001] The invention belongs to the application field of rotating machinery, and in particular relates to a flexible damping bearing bush, which can reduce the mechanical vibration produced during the operation of the rotating machinery. Background technique [0002] The rotating shaft supported on the bearing is often operated in an unexpected high-amplitude state when it is disturbed by the outside world, passes through the critical speed zone or self-excited vibration and other abnormal operating conditions, causing severe vibration of the machine. The conventional vibration reduction measure is to add a bush made of flexible material on the inside or outside of the bearing. This design has poor fatigue resistance in harsh application scenarios, such as long-term high-speed operation. Long-term use may be caused by the material Aging or fatigue fractures cause the vibration damping performance to fail, and even affect the normal operation of the entire bea...

AI Technical Summary

Problems solved by technology

The conventional vibration reduction measure is to add a bush made of flexible material on the inside or outside of the bearing. This design has poor fatigue resistance in harsh application scenarios, such as long-term high-speed operation. Long-term use may be caused by the material Aging or fatigue fracture causes the vibration damping performance to fail, and even affects the normal operation of the entire bearing

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