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Auxiliary protection device for magnetic suspension bearing

A technology of magnetic suspension bearing and protection device, which is applied in the direction of magnetic bearing, bearing, shaft and bearing to achieve the effect of easy processing, small space occupation and simple structure

Pending Publication Date: 2022-03-25
重庆高孚透平科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the shaft diameter of the rotor exceeds the size of the standard bearing, and higher requirements are placed on the installation conditions and the weight of the protective structure, the traditional protective bearing cannot meet this demand

Method used

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  • Auxiliary protection device for magnetic suspension bearing
  • Auxiliary protection device for magnetic suspension bearing
  • Auxiliary protection device for magnetic suspension bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as image 3 As shown, the protective block is mounted directly at both ends of the rotating shaft 4, and the rotor permanent magnet 5 is located in the middle of the two protective blocks. The protective block is higher than the rotating shaft, and the entire rotating shaft is covered with multiple protective blocks, and the entire system does not require any form of lubrication, such as Figure 5 Indicated.

[0018] Such as figure 1 As shown, the shape of the protective block is simple, the processing is low, suitable for various metals, non-metallic materials. figure 1 Then, the structure of the fixed block is shown, the outer edge is a circular arc, the arc surface has a hole, and the plane of the side has a cylindrical positioning column 21, and various common metal materials can satisfy their processing accuracy.

[0019] Such as Figure 4 As shown, the assembly state of the present invention is shown. After the assembly is completed, the fixing block 2 is mounted in...

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PUM

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Abstract

The invention discloses a magnetic suspension bearing auxiliary protection device. The invention relates to the field of magnetic suspension bearing systems. The protection block assembly is used for ensuring a protection gap required by starting of a magnetic suspension bearing, protecting a motor rotor and a system thereof in a sudden instability state and preventing destructive damage, and comprises a protection block, a fixing block and a fastener, the fixing block is installed in a rotor groove through a fastener, and the protection block is positioned in the radial direction and the circumferential direction through a cylindrical positioning column on the fixing block and a bevel edge of the rotor groove and is axially positioned through an axial pressing ring structure. The invention aims at the falling protection problem of a magnetic suspension motor, in particular to a disc type rotor magnetic suspension motor with compact space and small shaft diameter ratio (shaft length / shaft diameter).

Description

Technical field [0001] The present invention provides a rotor protection structure that belongs to the field of magnetic levitation bearing systems, which is used to avoid damage to the system when magnetic levitation bearing failure. Background technique [0002] In a magnetic levitation bearing system, in order to ensure the reliability and security of the system, a protective bearing (or auxiliary bearing, spare bearing, emergency bearing) is generally required. The purpose is to support the rotor during stationary and prevent the rotor drop to damage when the magnetic levitation bearing is lost. [0003] Since the conventional magnetic levitation protection bearing is used to have a standard size rolling bearing, the mounting method is relatively fixed, and the material is mostly metal or ceramic, and the oil or grease is required. Traditional protection axes cannot meet this requirement when the shaft diameter of the rotor exceeds the size of the standard bearing and the wei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/04
CPCF16C32/0408F16C32/04
Inventor 王思奇魏大忠田希晖毕中炜
Owner 重庆高孚透平科技有限公司