Motor rotor, magnetic levitation motor

By designing a motor rotor including sheath and solid magnetic steel, the bending deformation problem of the magnetic levitation motor rotor when it stops floating is solved, the bending resistance is improved, the motor rotor life is extended, and dynamic balance and operation reliability are ensured.

CN113595284BActive Publication Date: 2025-03-28GREE ELECTRIC APPLIANCE INC OF ZHUHAI
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Patent Information

Application Number
CN202110893359.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-08-04
Publication Date
2025-03-28
Estimated Expiration
2041-08-04

AI Technical Summary

Technical Problem

When the rotor of the magnetic levitation motor stops floating, the shaft is subjected to a force that falls in the middle and deforms at both ends, resulting in problems such as unbalanced rotor, reduced accuracy of the floating shaft, and increased vibration during operation.

Method used

A motor rotor is designed, including a rotating shaft and a sheath. The rotating shaft is arranged in axial direction in the first shaft, solid magnetic steel and second shaft. The sheath extends axially along the rotating shaft and circumferentially around the outer circumference of the solid magnetic steel. The two ends of the sheath are welded to the first shaft and the second shaft to form a reliable connected organic whole to improve bending resistance.

Benefits of technology

Effectively prevent large deformation problems caused by the bearing force at both ends when the rotor stops floating, extend the life of the motor rotor, ensure dynamic balance and operation reliability, and simplify the assembly process.

✦ Generated by Eureka AI based on patent content.
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Abstract

The present invention provides a motor rotor and a magnetic levitation motor, wherein the motor rotor includes a rotating shaft and a sleeve, wherein the rotating shaft includes a first shaft, a solid magnetic steel, and a second shaft arranged in sequence along the axial direction, wherein the sleeve extends along the axial direction of the rotating shaft and surrounds the outer circumference of the solid magnetic steel, and the axial ends of the sleeve are respectively integrally formed with connecting parts, and the sleeve is welded to the first shaft and the second shaft respectively through the connecting parts. According to the present invention, the connecting part and the sleeve are integrally formed, and the sleeve is welded to the first shaft and the second shaft through the connecting part, so that the sleeve and the first shaft and the second shaft become an organic whole with a reliable connection, thereby improving the bending resistance of the rotating shaft, and can effectively prevent the fitting error existing in the connection method of fitting and fixing by pins and the like in the related art, thereby causing the problem of large deformation caused by the bearings at both ends being subjected to force when the rotating shaft stops floating.
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