High-speed bearing

Abstract

The invention provides a high-speed bearing which comprises a first rotating shaft, a first bearing assembly, a second bearing assembly and a bearing seat, an inner ring of the first bearing assembly and the first rotating shaft synchronously rotate, an outer ring of the first bearing assembly and an inner ring of the second bearing assembly synchronously rotate, and an outer ring of the second bearing assembly is connected with the bearing seat. A plurality of first permanent magnets are evenly arranged on the first rotating shaft in the circumferential direction, a plurality of second permanent magnets are evenly arranged on the outer ring of the first bearing assembly in the circumferential direction, a plurality of magnetizers are evenly arranged on the inner wall face of the bearing seat in the circumferential direction, each magnetizer comprises a U-shaped steering part, and one of the two opposite side walls of each U-shaped steering part corresponds to the corresponding first permanent magnet in position. And the other side wall corresponds to the second permanent magnet in position. According to the high-speed bearing provided by the invention, the U-shaped steering part of the magnetizer is adopted to steer the magnetic field, so that the inner ring of the second bearing assembly and the first rotating shaft rotate in the same direction, the upper limit of the power input rotating speed borne by the bearing is also improved, the service life is not reduced, the production cost is low, and the application range is wide.

Description

technical field [0001] The present invention relates to the technical field of bearings, in particular to a high-speed bearing. Background technique [0002] Bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. [0003] Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element and cage. When the bearing rotates, there is rolling friction between the rolling element and the outer ring and the inner ring. The higher the rotational speed, the greater the friction loss. Therefore, each bearing Each has its upper speed limit. If the upper limit of the speed is exceeded, the life of the bearing will be greatly reduced and the cost of use of the enterprise will be increased. [0004] Due to the influence of friction loss when a bearing rotates, there is an upper limit on the rot...

AI Technical Summary

Problems solved by technology

However, the rotational speed of the bearing driven by friction is unstable. It is possible that the bearing connected to the power mechanism rotates fast, while the rest of the bearings rotate very slowly. In this way, it is actually a bearing that is actually working, and the high-speed rotating bearing will be affected by the rotational speed. If the temperature rises too fast, the service life of the bearing will be greatly reduced, and even the phenomenon of instant jamming will occur, and the performance of the two-stage or multi-pole bearing cannot be fully utilized.

[0005] The patent application number 201922190470.X discloses a high-speed bearing, which uses two or more rings in series, and uses an independent power source to drive each stage of bearings to increase the speed of each stage of bearings, so that the upper limit of the speed that the high-speed bearing can withstand as a whole It has been mentioned, but due to the need for multiple driving devices to drive the bearings at all levels to rotate at high speed, the cost is relatively high, which is not conducive to popularization

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