Rolling bearing arrangement structure resistant to external impact

Abstract

The invention discloses a rolling bearing arrangement structure resistant to external impact, and relates to the field of mechanical structure connection modes. The problems that an existing bearing arrangement structure can bear unstable radial and axial loads generated by deformation of an external elastic coupler at the same time in the operation process, and when external impact is large, a shaft system cannot operate or the transmission precision is reduced, and the service life is short are solved. A first cylindrical roller bearing is embedded in a through hole in one side of a box body, a bearing bush is embedded in a through hole in the other side of the box body, a second cylindrical roller bearing and a four-point contact ball bearing are evenly embedded in the bearing bush in the axis direction, one end of the shaft system is fixedly connected with an inner ring of the first cylindrical roller bearing, the other end of the shaft system sequentially penetrates through an inner ring of the second cylindrical roller bearing, an inner ring of the four-point contact ball bearing and a distance ring to be rotationally connected with the box body, and the distance ring is fixedly connected with the other side face of the box body through a bolt. The invention is suitable for the rolling bearing arrangement structure of the high-speed rotating shaft system.

Description

technical field [0001] The invention relates to the field of mechanical structure connection methods, in particular to a rolling bearing arrangement structure resistant to external impact. Background technique [0002] Rolling bearing is a common shaft support part, which is widely used in industrial production. According to its load bearing characteristics, it can be mainly divided into cylindrical roller bearings that only bear radial loads, four-point contact ball bearings that bear axial loads and Deep groove ball bearings that can bear both radial and axial loads. Usually, when the shaft system is subjected to both radial load and axial load, an arrangement of two deep groove ball bearings is adopted, but the limit speed of deep groove ball bearings is usually low (<5000rmin). The input shaft speed of a certain product exceeds 8000r / min. During operation, it will be subjected to unstable radial and axial loads caused by the deformation of the external elastic coupli...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that the existing bearing arrangement structure is subject to unstable radial and axial loads caused by the deformation of the external elastic coupling at the same time during operation. Reduced, and the problem of short service life, and propose a rolling bearing arrangement structure that resists external impact

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