Full permanent magnet dynamic full-suspension bearing

Abstract

The invention discloses a full permanent magnet dynamic full-suspension bearing. The full permanent magnet dynamic full-suspension bearing comprises a stator and a rotor. The rotor comprises a connecting shaft, and a first permanent magnet structure, a second permanent magnet structure and a third permanent magnet structure which are successively installed on the connecting shaft from top to bottom. The stator comprises a fourth permanent magnet structure, a fifth permanent magnet structure and a sixth permanent magnet structure which are successively installed from top to bottom. The fourth permanent magnet structure, the fifth permanent magnet structure and the sixth permanent magnet structure are connected as a whole through a connecting material. The first permanent magnet structure and the fourth permanent magnet structure form one group of a dynamic radial stable structure. The third permanent magnet structure and the sixth permanent magnet structure form one group of the dynamicradial stable structure. The second permanent magnet structure and the fifth permanent magnet structure form one group of a static axial stable structure. The full permanent magnet dynamic full-suspension bearing is capable of, through forming the static axial stable structure and the dynamic radial stable structures between the stator and the rotor, improving carrying capacity and stability of the rotor in a rotating process.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a full permanent magnet dynamic full suspension bearing. Background technique [0002] At present, there are two types of permanent magnetic suspension bearings: radial suspension and axial suspension. Radial suspension requires axial assistance to be stable, and axial suspension requires radial assistance to be stable. Simply combining radial suspension and axial suspension cannot achieve the purpose of stable suspension. [0003] The patent application document with the application number 201710028074.X discloses a permanent magnetic levitation bearing based on the gyro effect, including a rotating shaft and two sets of magnets installed at both ends of the rotating shaft. The magnet group includes a first ring magnet fixed on the stator side, a second ring magnet, and a third ring magnet fixed on the rotor side; the first ring magnet and the second ring magnet are arranged ...

AI Technical Summary

Problems solved by technology

[0004] In this method, the homopolar repulsion of the second ring magnet (axial magnetization magnet) and the third ring magnet (axial magnetization magnet) produces a suspension gap with a certain bearing capacity, but when the first ring magnet generates repulsion to the third ring magnet When the original magnetic field is destroyed, the levitation gap between the second ring magnet and the third ring magnet is not stable, because the other end of the shaft has the same device

Images