Permanent magnet bearing

Abstract

The invention relates to a permanent magnet bearing, and belongs to the technical field of mechanical parts. The permanent magnet bearing is composed of a bearing inner ring (1), an inner ring permanent magnet body (2), a bearing ring (4), balls (5), a baffle ring (8), a bearing outer ring (3), an outer ring permanent magnet body (7), and an oval fillister head screw (6); the baffle ring and the bearing inner ring are mounted on a rotary shaft (9) firstly, and then the outer ring permanent magnet body and the bearing outer ring are connected through the oval fillister head screw, the balls are distributed in a vacancy between the outer ring permanent magnet body and the bearing outer ring through the bearing ring, a whole formed by the bearing outer ring, the outer ring permanent magnet body, the balls and the bearing ring is mounted in a bearing seat (10), the inner ring permanent magnet body is connected with the bearing inner ring through a spline, a bearing outer ring assembly is mounted in a bearing inner ring assembly, and axial positioning is completed through a gland (11). The permanent magnet bearing can effectively avoid damage of rotor impact and rotor axial movement to the permanent magnet bearing, and has the functions of axial automatic compensation and automatic protection for loss of excitation, and the reliability is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical parts, and relates to a permanent magnetic bearing, in particular to a shock-resistant permanent magnetic bearing with self-compensation and self-protection properties. Background technique [0002] At present, conventional permanent magnetic bearings mostly use the method of adding balls on both sides of the rotor part to locate the rotor part in the permanent magnetic bearing. The structure of this kind of permanent magnetic bearing is relatively fixed, and the bearing itself does not have the compensation function when the rotor part has axial movement. , It is easy to cause excessive extrusion of the ball and the bracket, which will cause a rapid increase in the bearing temperature. When the temperature is higher than the permanent magnet demagnetization temperature, the permanent magnet will be demagnetized and the permanent magnet bearing will be damaged. [0003] Conventional permanent m...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, in order to solve the situation of self-compensation and poor impact resistance of permanent magnetic bearings, and propose a new type of permanent magnetic bearings

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