Magnetic suspension bearing

Abstract

The invention discloses a magnetic suspension bearing. A permanent magnet annular assembly which is formed by axially stacking three annular permanent magnets magnetized by inside and outside unipolar radiation orientation and has the middle provided with an introverted type radial-opening annular groove is fixed on an inner wall of an outer ring of the bearing, and then a side-direction structure which is complementary in a convex-concave mode and is arranged in a crossed mode is formed by radial and axial working air gaps of the introverted type radial-opening annular groove and a permanent magnet annular assembly, wherein the permanent magnet annular assembly is fixed on the outer side of an inner ring of the bearing, is formed by axially stacking three annular permanent magnets magnetized by inside and outside unipolar radiation orientation and has the middle provided with an introverted type radial-opening annular groove. Magnetic conducting materials are covered on the sides of non-working air gaps of each permanent magnet annular assembly. In each permanent magnet annular assembly, axially adjacent annular permanent magnets maintain opposite magnetic field polarities, and between the two permanent magnet annular assemblies on the inner ring and the outer ring, the annular permanent magnets which are opposite to each other in the radial direction through the air gaps maintain a repelling state of magnetic force.

Description

Technical field: [0001] The invention relates to a magnetic suspension bearing, in particular to a magnetic suspension bearing of a full-permanent magnet repulsion type, more specifically: an integral self-stabilizing full-permanent magnet repulsion type magnetic suspension bearing. Background technique: [0002] Most of the permanent magnetic repelling magnetic suspension bearings in the prior art belong to the unilateral magnetic suspension bearing structure, which causes radial runout easily when the rotor shaft rod of the magnetic suspension bearing application device is subjected to axial force, thereby reducing the safe operation of the magnetic suspension rotor support system ; At the same time, since the unilateral magnetic suspension bearing belongs to the split structure, it will bring a lot of inconvenience to the packaging, storage and transportation of the magnetic suspension bearing products, but if a kind of integral bilateral full permanent magnetic repulsion ...

AI Technical Summary

Problems solved by technology

[0002] Most of the permanent magnetic repelling magnetic suspension bearings in the prior art belong to the unilateral magnetic suspension bearing structure, which causes radial runout easily when the rotor shaft rod of the magnetic suspension bearing application device is subjected to axial force, thereby reducing the safe operation of the magnetic suspension rotor support system ; At the same time, since the unilateral magnetic suspension bearing belongs to the split structure, it will bring a lot of inconvenience to the packaging, storage and transportation of the magnetic suspension bearing products. The above-mentioned unfavorable factors will be avoided, thereby bringing beneficial effects to the promotion and application of magnetic suspension bearings and playing a positive role in promoting the upgrading of many high-end energy-saving and environmental protection products that pursue high speed, precision, and quietness.