CN102946157A - High-speed permanent magnet motor rotor structure - Google Patents
High-speed permanent magnet motor rotor structure Download PDFInfo
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- CN102946157A CN102946157A CN2012104694192A CN201210469419A CN102946157A CN 102946157 A CN102946157 A CN 102946157A CN 2012104694192 A CN2012104694192 A CN 2012104694192A CN 201210469419 A CN201210469419 A CN 201210469419A CN 102946157 A CN102946157 A CN 102946157A
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to a high-speed permanent magnet motor rotor structure. Radial bolt holes and axial ventilation holes are formed in a rotor, wherein the radial bolt holes are communicated with the axial ventilation holes; a permanent magnet block and a magnetic pole interval are fixedly arranged on the rotor through bolts; and jackets are thermally sheathed outside the permanent magnet block and the magnetic pole interval on the rotor and are made of titanium alloy or high-strength metal, and the jackets are retracted and then are tightly hooped on the rotor. According to the high-speed permanent magnet motor rotor structure disclosed by the invention, a permanent magnet is fixed by adopting the bolts, the problem of mutual exclusion between a partitioning block and the permanent magnet in the matching process of the thermal sheathing is solved and the work difficulty during thermal sheathing of a permanent magnet motor is reduced; after the permanent magnet is fixed by the bolts, the finish machining of the surface can be conveniently carried out and the heating temperature of the jackets during thermal sleeving is reduced; after the jacks are assembled, the bolts can be unscrewed; bolt holes can be used as the radial ventilation holes; the radial ventilation holes and the axial ventilation holes form a ventilating and cooling system of the rotor; and the bolts are finally unscrewed, and thus the problem of stress concentration caused by the bolts is solved.
Description
Technical field
The present invention relates to a kind of high speed permanent magnet motor rotor, especially a kind of high-speed permanent magnet motor that is suitable for can improve the rotor cooling effect of magneto and the high speed permanent magnet motor rotor of reduction rotor permanent magnet assembly difficulty effectively.
Background technology
At present the high speed permanent magnet motor rotor permanent magnet be fixed with two kinds of methods:
The high strength fibre such as carbon fiber or glass fibre colligation mode.This kind mode does not need hot jacket to cooperate, and assembles relatively simply, but shortcoming exists: (1) is difficult to accurate control in colligation stress, causes the variance of product quality excessive; (2) conductive coefficient of fiber is relatively poor, is unfavorable for the rotor heat radiation; (3) fiber can't to the reliable magnetic screen of permanent magnet, cause the eddy current loss of whole rotor larger.
Adopt the high strength sheaths such as stainless steel or titanium alloy to carry out the hot jacket fiting constraint.This kind mode is easy to control of product quality, and conductive coefficient is good, and can effectively shield permanent magnet.Shortcoming is: in the time of the permanent magnet piecemeal, can produce repulsion between the permanent magnet, be difficult to carry out heating jacket tooling.
Summary of the invention
The present invention will provide a kind of high speed permanent magnet motor rotor structure, is used for the technical problem of the permanent magnet hot jacket constraint of solution high-speed electric expreess locomotive.
For achieving the above object, technical scheme of the present invention is: a kind of high speed permanent magnet motor rotor structure, comprise rotor, permanent magnet blocks and pole piece spacing, be characterized in: rotor is provided with radial bolts hole and axial ventilation hole, and radial bolts hole and axial ventilation hole are connected, and permanent magnet blocks and pole piece spacing are bolted on the rotor.
Hot jacket sheath outside epitrochanterian permanent magnet blocks and the pole piece spacing, lock ring is on rotor after the jacket shrinkage.
The sheath material is titanium alloy or high duty metal, has the hole of respective rotor bolt above the sheath, and bore dia is greater than the diameter of bolt.
Beneficial effect of the present invention:
The present invention is fixed on the rotor by the permanent magnet of bolt with piecemeal first, then carry out the heating jacket tooling of sheath, because the hole corresponding to bolt is arranged above the sheath, therefore after the hot jacket success, bolt can take out, bolt hole forms the radial ventilation hole, with axial ventilation hole formation rotor ventilation cooling system.Have the following advantages:
1) by adopting the bolt fixed permanent magnet, solved the piecemeal permanent magnet problem of mutual exclusion in the heating jacket tooling process;
2) permanent magnet fixing after, can carry out easily the fine finishining of permanent magnet surfaces, reduced the sheath heating-up temperature when hot jacket cooperates, both avoided the loss of excitation risk of permanent magnet to have and reduced because the sheath problem of oxidation that high temperature causes;
3) bolt hole and rotor axial ventilation hole can consist of the rotor ventilation cooling system, have solved the rotor cooling problem of high-speed permanent magnet motor;
4) bolt finally screws out, and has avoided bolt to cause stress to concentrate and the permanent magnet Crushing Problem that causes.
The present invention adopts the bolt fixed permanent magnet, has solved the piecemeal permanent magnet problem of mutual exclusion in the hot jacket engagement process, the frock difficulty when having made things convenient for the magneto hot jacket; After permanent magnet is bolted, can carry out easily the fine finishining on surface, reduce the sheath heating-up temperature when hot jacket cooperates; After the sheath assembling, bolt can screw out, and its bolt hole can be used as the radial ventilation hole, has consisted of the rotor ventilation cooling system with axial ventilation hole; Bolt finally screws out, and has also avoided the problem of stress concentration that causes because of bolt.
Description of drawings
Fig. 1 is structure master's cutaway view of the present invention;
Fig. 2 is the left cutaway view of Fig. 1.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Such as Fig. 1, shown in 2, high speed permanent magnet motor rotor structure of the present invention comprises rotor 1, permanent magnet blocks 4, pole piece spacing 5, bolt 6, sheath 7 etc.
Have radial bolts hole 2 and axial ventilation hole 3 on the rotor 1, both are communicated with.Also there are bolt hole in permanent magnet blocks 4 and pole piece spacing 5, and permanent magnet blocks 4 and pole piece spacing 5 are fixed on the rotor 1 by bolt 6.This moment, whole rotor 1 can carry out the fine finishining of rotor outer circle, reduced fit tolerance, and improved its concentricity, guaranteed its rotor dynamic balancing under high speed.
Sheath 7 materials are the high strength metals such as titanium alloy or steel, and the above has the hole of respective rotor bolt, and diameter is larger than the diameter of bolt 6.
Sheath 7 is through adding thermal expansion, is set on the rotor that assembles (to comprise permanent magnet blocks 4 and pole piece spacing 5), and after equitemperature reduced, sheath 7 shrank, thus rotor is waled tightly.
Adopt spanner that bolt 6 is screwed out by the hole on the sheath, this moment, radial bolts hole 2 was communicated with axial ventilation hole 3.When rotor, the air in the radial bolts hole throws away because of the effect of centrifugal force, thereby forces air to enter axial ventilation hole 3 from two ends of rotor, thereby has formed the rotor ventilation system.
Beat bolt hole on the permanent magnet of the present invention, then be bolted on the rotor, cannot arrange the moulding problem thereby solved between the permanent magnet because of repulsion.After treating that permanent magnet is fixing, can carry out the fine finishining of outer round surface.Jacket surface has the hole of corresponding bolt, expands after the heating, thereby can put permanent magnet, and after temperature reduced, sheath tightly bound round permanent magnet on rotor.By spanner bolt is screwed out from the hole of jacket surface, thereby formed ventilation hole radially.Rotor axial has ventilation hole, is communicated with the radial ventilation hole, and when rotor, because the effect of centrifugal force, the air in the radial ventilation hole can throw away because of centrifugal force, thereby has promoted the air circulation of internal rotor.
Claims (3)
1. high speed permanent magnet motor rotor structure, comprise rotor (1), permanent magnet blocks (4) and pole piece spacing (5), it is characterized in that: described rotor (1) is provided with radial bolts hole (2) and axial ventilation hole (3), and radial bolts hole (2) and axial ventilation hole (3) are connected, and permanent magnet blocks (4) and pole piece spacing (5) are fixed on the rotor (1) by bolt (6).
2. high speed permanent magnet motor rotor structure according to claim 1 is characterized in that: the permanent magnet blocks (4) on the described rotor (1) and pole piece spacing (5) outer hot jacket sheaths (7), lock ring was on rotor (1) after sheath (7) shrank.
3. high speed permanent magnet motor rotor structure according to claim 2, it is characterized in that: described sheath (7) material is titanium alloy or high duty metal, have the hole of respective rotor bolt above the sheath (7), and bore dia is greater than the diameter of bolt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104694192A CN102946157A (en) | 2012-11-20 | 2012-11-20 | High-speed permanent magnet motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104694192A CN102946157A (en) | 2012-11-20 | 2012-11-20 | High-speed permanent magnet motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102946157A true CN102946157A (en) | 2013-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104694192A Pending CN102946157A (en) | 2012-11-20 | 2012-11-20 | High-speed permanent magnet motor rotor structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN102946157A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429388A (en) * | 2015-12-29 | 2016-03-23 | 卧龙电气南阳防爆集团股份有限公司 | High-capacity increased safety synchronous motor magnetic pole installation method and matching device thereof |
| CN107453504A (en) * | 2017-07-26 | 2017-12-08 | 北京交通大学 | A kind of permagnetic synchronous motor cage-type rotor with composite radiating structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120403U (en) * | 1992-06-04 | 1992-10-28 | 北京市西城区新开通用试验厂 | Additional rim type rare-earth magneto electric machine rotor |
| CN2840480Y (en) * | 2005-10-11 | 2006-11-22 | 上海万德风力发电股份有限公司 | Neodymium-ferroboron permanent magnetic electric machine rotor used on wind power generator |
| KR100901712B1 (en) * | 2008-09-09 | 2009-06-10 | 보국전기공업 주식회사 | A rotor of generator and electric motor |
| CN101777810A (en) * | 2010-03-31 | 2010-07-14 | 哈尔滨工业大学 | Automatic inner-cooling rotor of high speed permanent magnet synchronous motor |
| CN202978481U (en) * | 2012-11-20 | 2013-06-05 | 中国船舶重工集团公司第七0四研究所 | High-speed permanent magnet motor rotor structure |
-
2012
- 2012-11-20 CN CN2012104694192A patent/CN102946157A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120403U (en) * | 1992-06-04 | 1992-10-28 | 北京市西城区新开通用试验厂 | Additional rim type rare-earth magneto electric machine rotor |
| CN2840480Y (en) * | 2005-10-11 | 2006-11-22 | 上海万德风力发电股份有限公司 | Neodymium-ferroboron permanent magnetic electric machine rotor used on wind power generator |
| KR100901712B1 (en) * | 2008-09-09 | 2009-06-10 | 보국전기공업 주식회사 | A rotor of generator and electric motor |
| CN101777810A (en) * | 2010-03-31 | 2010-07-14 | 哈尔滨工业大学 | Automatic inner-cooling rotor of high speed permanent magnet synchronous motor |
| CN202978481U (en) * | 2012-11-20 | 2013-06-05 | 中国船舶重工集团公司第七0四研究所 | High-speed permanent magnet motor rotor structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429388A (en) * | 2015-12-29 | 2016-03-23 | 卧龙电气南阳防爆集团股份有限公司 | High-capacity increased safety synchronous motor magnetic pole installation method and matching device thereof |
| CN105429388B (en) * | 2015-12-29 | 2018-06-22 | 卧龙电气南阳防爆集团股份有限公司 | Large capacity Ex e synchronous motor method for installing magnetic poles and its corollary apparatus |
| CN107453504A (en) * | 2017-07-26 | 2017-12-08 | 北京交通大学 | A kind of permagnetic synchronous motor cage-type rotor with composite radiating structure |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130227 |