Permanent magnet suspension bearing and installation structure thereof

Abstract

The invention relates to a permanent magnet suspension bearing, which comprises an inner ring (1), an outer ring (2), a plurality of first radial permanent magnets (3) and at least one axial permanent magnet (4), wherein a plurality of permanent magnet rings (21) are fixed on the inner circumferential surface of the outer ring (2), the inner ring is sleeved in the outer ring, the inner diameter of the permanent magnet rings is larger than the outer diameter of the inner ring, and adjacent permanent magnet rings are mutually isolated along the axial direction; the first radial permanent magnets are fixed on the inner ring, respectively correspond to the permanent magnet rings and are attracted to the permanent magnet rings through magnetic force along the radial direction; and the axial permanent magnet (4) is fixed on the inner ring and is positioned between the permanent magnet rings, so that the outer ring is in a force balance state along the axial direction. The invention also provides an installation structure of the permanent magnet suspension bearing. The permanent magnet suspension bearing provided by the invention is more suitable for the working occasion in which the outer ring is a rotor and the inner ring is a stator, and can bear larger load.

Description

technical field [0001] The invention relates to a permanent magnetic suspension bearing and its installation structure. Background technique [0002] Magnetic suspension bearings use magnetic force to suspend the rotor in the air, so that there is no mechanical contact between the rotor and the stator, and the rotor can run to a high speed. Oil pollution and other advantages, especially suitable for special environments such as high speed, vacuum, and ultra-clean. [0003] The inventor of the present application discloses a permanent magnetic suspension bearing in Chinese patent CN 201531526U. This permanent magnetic suspension bearing mainly includes an inner ring and an outer ring, wherein the inner ring is a permanent magnet, and the outer ring is made of magnetically conductive or non-magnetically conductive material. production. Axial permanent magnets are respectively fixed at both ends of the outer ring of the permanent magnetic suspension bearing, and radial perman...

AI Technical Summary

Problems solved by technology

This kind of bearing is not suitable for various working occasions where the outer ring is the rotor and the inner ring is the stator, such as in the driven wheels of various vehicles

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