An internal rotating magnetic levitation bearing

The internal rotation magnetic levitation bearing solves the problem of traditional magnetic levitation bearings relying on external controllers through a wedge-shaped inclined magnet structure and a permanent magnet synchronous motor magnetic field system. It achieves contactless support and high-precision operation, improves the system's integration and reliability, and is suitable for large-scale engineering applications.

CN224315371UActive Publication Date: 2026-06-02李小庆
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
李小庆
Filing Date
2025-08-19
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing magnetic levitation bearings rely on external controllers for stable levitation, resulting in low system integration, high power consumption, complex structure, and inconvenient maintenance, making them difficult to apply in space-sensitive scenarios.

Method used

The internal rotating magnetic levitation bearing structure utilizes the wedge-shaped inclined first magnet and the levitation magnet to form a symmetrical mutually repulsive magnetic force pair, achieving axial and radial stable levitation without the need for an external controller. Combined with the permanent magnet synchronous motor stator and rotor magnetic field system, the structure's compactness and integration are improved.

Benefits of technology

It achieves contactless support and high-precision operation, improves the system's fault tolerance and reliability, reduces magnetic field inhomogeneity and processing errors, lowers manufacturing and maintenance costs, and is suitable for large-scale engineering applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to an internal rotating magnetic levitation bearing, comprising: a rotor assembly and a stator assembly; the rotor assembly includes: a rotating body, a first magnet, and a second magnet; the second magnet is disposed on top of the first magnet; the first magnets are symmetrically distributed at intervals along the outer periphery of the rotating body, and are arranged symmetrically along the second magnets in a wedge-shaped inclination; the stator assembly includes: a fixed ring, a traction magnet, and a levitation magnet; the levitation magnet corresponds to the first magnet, and the two sides of the levitation magnet and the two sides of the second magnet form oppositely arranged same-level magnetic pole pairs for axial levitation support; the traction magnets are symmetrically arranged at intervals inside the fixed ring, and form multiple oppositely arranged same-level magnetic pole pairs with the second magnets to achieve radial traction and levitation support; the central axes of the rotor assembly and the stator assembly coincide; the rotating body and the fixed ring are coaxially arranged along the central axis of the rotor assembly, and the rotating body is rotatably disposed within the fixed ring.
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