Squirrel-cage elastic support bearing capable of improving installation accuracy

Abstract

The invention relates to the technical field of squirrel-cage elastic support bearings, and discloses a squirrel-cage elastic support bearing capable of improving installation accuracy. The squirrel-cage elastic support bearing comprises mounting blocks and a rotor, cylindrical grooves are transversely formed in the left sides of the mounting blocks, round holes are formed in one sides, far away from the groove openings, of the cylindrical grooves, the right end of the rotor penetrates through the cylindrical grooves and the round holes and extends to the outside of the mounting blocks, fixedrings are arranged in the cylindrical grooves, the inner sides of the fixed rings are in interference fit with the side wall of the rotor, the side walls of the fixed rings are movably connected withretainers in a sleeved mode, a plurality of uniformly distributed rollers are slidably connected in the retainers, and annular mounting grooves are formed in the outer sides of the fixed rings. The squirrel-cage elastic support bearing capable of improving installation accuracy can reduce installed parts and reduce installation error between matched components, ensures the positioning reliabilityof a bearing outer ring and a squirrel-cage elastic support, effectively lubricates and cools the squirrel-cage elastic support bearing to prevent faults such as bearing locking can be prevented.

Description

technical field [0001] The invention relates to the technical field of squirrel-cage spring bearings, in particular to a squirrel-cage spring bearing capable of improving matching and installation accuracy. Background technique [0002] The function of the bearing is to support the rotation and carry the load, but when working under certain special working conditions such as high speed, high temperature and heavy load, the vibration of the rotor will be transmitted to the housing through the bearing, which will adversely affect the normal operation of the equipment. The vibration of the equipment can be effectively reduced by applying the support method of elastic support and squeezed oil film damping. This design requires reasonable design of parameters such as the stiffness of the elastic support structure, the damping ratio of the squeezed oil film, and the accuracy of the installation structure. The most critical control index of the squirrel cage elastic bearing is the ...

AI Technical Summary

Problems solved by technology

For squirrel-cage spring bearings that require strict stiffness parameters, the spring-supported bearings with the original combined and separated structure have a large change in stiffness. And circumferential positioning, this positioning method works in high-speed, high-temperature and vibrating environmental conditions, the bearing outer ring and the seat are very easy to produce relative rotation, which has a great impact on the bearing work, and in severe cases, it will cause the bearing to lock the shaft, etc. Fault

In addition, the end face of the bearing needs a pressure plate and screws to complete the axial positioning, which will also have an adverse effect on the reliable use of the bearing

[0003] At present, although the squirrel cage elastic bearing can effectively reduce the vibration of the equipment through the application of elastic support and squeeze oil film damping, the stiffness value of the original combined and separated spring bearing has a large change in stiffness. On the other hand, the squirrel cage elastic bearing The seat and the outer diameter of the bearing are positioned radially and circumferentially through interference installation. This positioning method works under high-speed, high-temperature and vibrational environmental conditions. The outer ring of the bearing and the seat are easily rotated relative to each other. It has a great impact, and in severe cases, it will cause failures such as bearing locks

Images