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Mechanical fixing method of permanent magnet

A technology of mechanical fixation and permanent magnets, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, manufacturing stator/rotor body, etc., can solve problems affecting elevator safety, permanent magnet loosening, hazards, etc., to achieve The effect of improving the safety of use

Inactive Publication Date: 2005-08-24
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aging resistance of the glue is highly discrete, and the permanent magnet bonded with it may loosen after a long-term use of the actual traction machine, seriously affecting the safety of the elevator, and even causing great harm

Method used

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  • Mechanical fixing method of permanent magnet
  • Mechanical fixing method of permanent magnet

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] like figure 1 As shown, in the mechanical fixing structure of the permanent magnet of the present invention, the permanent magnet 2 is bonded to the yoke, and the permanent magnet 2 is provided with chamfers. Both ends of the permanent magnet 2 are equipped with a protective ring 3 made of non-magnetic material, and the protective ring 3 is provided with a groove matching the permanent magnet 2, and the permanent magnet 2 is fixed in the radial direction. Reinforcing rings 4 are installed outside the two ends of the protective ring 3 to block the sliding of the permanent magnet in the axial direction and fix the permanent magnet 2 in the axial direction. The protection ring 3 and the reinforcement ring 4 are fixed on the yoke 1 by screws.

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Abstract

The present invention relates to a permanent magnet mechanical fixing method in gearless towing trolley adopting bulged rotor magnetic path structure. two ends of the permanent magnet are respectively equipped with protecting ring, and the axial outside of the protecting ring is equipped with reinforcing ring so as to prevent the permanent magnet from loosing in magnetic yoke radial and axial direction.

Description

technical field [0001] The invention relates to a permanent magnet fixing structure, in particular to a permanent magnet mechanical fixing structure in a gearless tractor adopting a protruding rotor magnetic circuit structure. Background technique [0002] With the development of permanent magnet materials and motor control technology, the gearless permanent magnet synchronous traction machine has become the highlight of the current elevator traction technology. The permanent magnet arrangement of the permanent magnet synchronous traction machine generally adopts two types: plug-in type and protruding type. Since the permeance of the permanent magnet is approximately the same as that of air, the plug-in magnetic circuit structure is a salient pole in electrical performance, while the protruding structure is a hidden pole. In contrast, the surface-protruded magnetic circuit structure has outstanding advantages in improving power factor, reducing magnetic flux leakage, and re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K15/03
Inventor 朱思中甘靖戈
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD