CN1216448C - Mechanical fixing method of permanent magnet - Google Patents
Mechanical fixing method of permanent magnet Download PDFInfo
- Publication number
- CN1216448C CN1216448C CN02136825.2A CN02136825A CN1216448C CN 1216448 C CN1216448 C CN 1216448C CN 02136825 A CN02136825 A CN 02136825A CN 1216448 C CN1216448 C CN 1216448C
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- China
- Prior art keywords
- permanent magnet
- present
- traction machine
- fixing method
- mechanical fixing
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- Expired - Lifetime
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention relates to a mechanical fixing method of a permanent magnet, particularly to a mechanical fixing method of a permanent magnet in a gearless traction machine using a protruding type rotor magnetic circuit structure. The present invention is used for solving the problem that a permanent magnet pasted by structure glue can be unscrewed after utilized in a practical traction machine for a long time, which seriously affect the using safety of an elevator in the prior art. In the present invention, protection rings are used for both ends of the permanent magnet; the outer side of each protection ring is provided with a strengthening ring in the axial direction so as to prevent the permanent magnet from loosing in the radial direction of a magnetic yoke and in the upward direction of a shaft. The present invention is mainly used for gearless traction machine of a protruding type rotor magnetic circuit structure.
Description
Technical field
The present invention relates to a kind of fixed structure of permanent magnet, relate in particular to the permanent magnet mechanical fixed structure in a kind of gearless machine that adopts the convex type rotor magnetic circuit structural.
Background technology
Along with the development of permanent magnetic material and electric machines control technology, gearless permanent-magnet synchronous traction machine becomes the bright spot of current elevator traction technology.The permanent magnet arrangement of permanent magnetic synchronous traction machine is generally used two kinds of plug-in type and convex types more.Because the magnetic conductance of permanent magnet is approximate identical with air, so the plug-in type magnetic structure belongs to salient pole on electric property, and the convex type structure belongs to non-salient pole.Comparatively speaking, surperficial convex type magnetic structure is improving power factor, is reducing leakage field, is reducing all have outstanding advantage aspect the torque pulsation.Surface convex type magnetic circuit requires permanent magnet to be fixed on yoke surfaces, is usually pasted by structure glue.But the ageing-resistant performance of glue has bigger discreteness, may get loose after using in that actual traction machine is long-term with the permanent magnet of its bonding, has a strong impact on the safety that elevator uses, even causes great harm.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of mechanical fixed structure of permanent magnet, and it can effectively solve with the bonding permanent magnet of structure glue and may get loose after the long-term use of actual traction machine, has a strong impact on the safety problem that elevator uses.
For solving the problems of the technologies described above; the mechanical fixed structure of permanent magnet of the present invention; comprise permanent magnet with chamfering; permanent magnet is bonded on the yoke by structure glue; be provided with the guard ring that non-magnet_conductible material is made at the permanent magnet two ends; offer the groove that matches with permanent magnet in this guard ring, in the axial outside of guard ring, other is equipped with reinforcing ring (4).
Advantage of the present invention is to have prevented from effectively to adopt in the traction machine of convex type rotor magnetic circuit structural because the phenomenon that the aging permanent magnet of structure glue gets loose, and has improved the safety in utilization of traction machine.
Description of drawings
Fig. 1 is the mechanical fixed structure schematic diagram of permanent magnet of the present invention.
Symbol description among the figure:
1 yoke
2 permanent magnets
3 guard rings
4 reinforcing rings
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 1, the mechanical fixed structure of permanent magnet of the present invention is bonded with permanent magnet 2 on yoke, offer chamfering on the permanent magnet 2.At permanent magnet 2 two ends the guard ring 3 that non-magnet_conductible material is made is housed, offers the groove that matches with permanent magnet 2 on the guard ring 3, diametrically permanent magnet 2 is fixed.In the outside, guard ring 3 two ends reinforcing ring 4 is housed,, in the axial direction permanent magnet 2 is fixed in order to block permanent magnet slip in the axial direction.Guard ring 3 and reinforcing ring 4 by screw on yoke 1.
Claims (1)
1, a kind of mechanical fixed structure of permanent magnet; comprise permanent magnet with chamfering; permanent magnet is bonded on the yoke by structure glue; it is characterized in that: be provided with the guard ring (3) that non-magnet_conductible material is made at permanent magnet (2) two ends; offer in this guard ring (3) and groove that permanent magnet (2) matches; in the axial outside of guard ring (3), other is equipped with reinforcing ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02136825.2A CN1216448C (en) | 2002-09-05 | 2002-09-05 | Mechanical fixing method of permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02136825.2A CN1216448C (en) | 2002-09-05 | 2002-09-05 | Mechanical fixing method of permanent magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1477761A CN1477761A (en) | 2004-02-25 |
| CN1216448C true CN1216448C (en) | 2005-08-24 |
Family
ID=34146696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02136825.2A Expired - Lifetime CN1216448C (en) | 2002-09-05 | 2002-09-05 | Mechanical fixing method of permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1216448C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577468B (en) * | 2008-05-05 | 2011-01-19 | 贵州航天林泉电机有限公司 | Method and device for bonding magnetic steel of external rotor duplex magnetoelectric machine |
| CN101882823B (en) * | 2010-06-25 | 2012-04-11 | 宁波华夏一品电梯有限公司 | Motor rotor of permanent-magnetic synchronous tractor |
-
2002
- 2002-09-05 CN CN02136825.2A patent/CN1216448C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1477761A (en) | 2004-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20050824 |