Permanent magnet bearing and roller bearing combined bearing

Abstract

The invention relates to the field of machine parts, and provides a novel bearing formed through the combination of a permanent magnet bearing and a roller bearing. The novel bearing comprises an inner ring, an outer ring, a roller and four magnetizers. The novel bearing is characterized in that, like a normally used roller bearing, the roller is mounted between the inner ring and the outer ring; the inner ring and the outer ring are formed through processing permanent magnet steel, provided with axial magnetization, the same in magnetic direction, coaxially arranged, the same in axial length and vertically aligned; the magnetic lines of the magnetic steels of the inner ring and the outer ring are completely and respectively concentrated into gaps between every two adjacent magnetizers through four magnetizers on the two sides of the inner and the outer rings, so as to form the permanent magnet bearing; due to polar repulsions, the inner ring and the outer ring mutually repel, extrusion forces from the inner ring and the outer ring of the roller bearing to the roller can be reduced. Therefore, the friction, the abrasion, the vibration and the noise of the system are reduced, the rotating speed of the bearing is increased, and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to the field of mechanical parts, and mainly combines a permanent magnetic bearing and a roller bearing into one to form a hybrid bearing so as to improve various performances of the bearing. Background technique [0002] At present, roller bearings are widely used in mechanical devices, and its life determines the life of the entire device. The life of roller bearings, especially in high-speed and ultra-high-speed operation, is limited due to mechanical friction, wear, vibration, noise and other reasons; permanent magnetic bearings have no friction and wear, and can theoretically run infinitely high-speed permanently, but it is The environment and conditions of use, as well as its own requirements in terms of processing, assembly, and installation processes, are relatively high. Once they are not met, they may lose stability. [0003] If the permanent magnetic bearing and the roller bearing are combined into one to form a hybrid...

AI Technical Summary

Problems solved by technology

The life of roller bearings, especially in high-speed and ultra-high-speed operation, is limited due to mechanical friction, wear, vibration, noise and other reasons; permanent magnetic bearings have no friction and wear, and can theoretically run infinitely high-speed permanently, but it is The environment and conditions of use, as well as its own requirements in processing, assembly, and installation processes, etc., may lose stability if they are not met.

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