CN202363997U - Fastening structure of stator core of alternating current motor - Google Patents
Fastening structure of stator core of alternating current motor Download PDFInfo
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- CN202363997U CN202363997U CN2011204952068U CN201120495206U CN202363997U CN 202363997 U CN202363997 U CN 202363997U CN 2011204952068 U CN2011204952068 U CN 2011204952068U CN 201120495206 U CN201120495206 U CN 201120495206U CN 202363997 U CN202363997 U CN 202363997U
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- fastening structure
- alternating current
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Abstract
The utility model discloses a fastening structure of a stator core of an alternating current motor, which comprises a plurality of stator punching sheets, two stator end plates and a plurality of amplitude ribs. A plurality of dovetail grooves are evenly distributed on an excircle of each stator punching sheet in the radial direction, and grooves having the same number as the dovetail grooves on the stator punching sheets are evenly distributed on excircles of the stator end plates in a radial direction. The outer end faces of the stator end plates corresponding to the bottom of each groove are respectively provided with a lug, and the shapes of the plurality of amplitude ribs are matched with the shapes of the dovetail grooves on the stator punching sheets. The plurality of stator punching sheets and the two stator end plates are laminated to form the stator core, the plurality of amplitude ribs are embedded in the dovetail grooves of the stator core, and two ends of each amplitude rib are respectively welded to the lugs arranged on the stator end plates positioned at two ends of the stator core. The fastening structure of the stator core guarantees rigidity and tightness of the whole stator core, and solves the problem of damage to insulating layers of the stator punching sheets caused by a traditional welding process, thereby reducing eddy current loss of the stator core.
Description
Technical field
The utility model relates to alternating current machine, is specifically related to a kind of fastening structure of alternating current machine stator core.
Background technology
The external pressure of present medium-sized alternating current machine sets sub-core structure, is rigidity and the tightness that guarantees its stator core, and the mode that is employed in the cylindrical weldering width of cloth muscle of stator core is usually come fastening stator core.Shown in Fig. 1 a and Fig. 1 b: the stator punching 1 and the end plate 2 of some is welded in width of cloth muscle 3 in the groove on the stator core cylindrical after laminating and compressing, and groove is uniformly distributed with on the cylindrical of stator core.
For reducing the eddy current loss in the stator core, stator core is got up by silicon steel plate stacking insulated from each other, to hinder the circulation of eddy current.Stator punching need be selected the silicon steel sheet of handling through insulation for use.But when adopting the fastening stator core of welding width of cloth muscle mode; Width of cloth muscle will be welded to the other end of stator core from an end of stator core; The high temperature of welding process will destroy the insulating barrier around the weld stator punching; And make it become an electric conductor, constitute the eddy current path and can cause the eddy current loss of stator core to increase the also corresponding thereupon increase of the iron loss of motor like this.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of prior art; A kind of fastening structure of alternating current machine stator core is provided; It had both guaranteed the rigidity and the compactness of whole stator core; Solved traditional welding technology again and caused destruction, thereby reduced stator core eddy current loss the stator punching insulating barrier.
The technical scheme that realizes above-mentioned purpose is: a kind of fastening structure of alternating current machine stator core, comprise multi-disc stator punching, two stator end plates and some width of cloth muscle, wherein:
Be provided with some dovetail grooves on the cylindrical of said stator punching radial equipartition;
Be provided with on the cylindrical of said stator end plate radial equipartition with said stator punching on the identical groove of dovetail groove quantity, said stator end plate is provided with a lug respectively on the outer face of the bottom land of corresponding each groove;
Dovetail groove shape on the shape of said some width of cloth muscle and the said stator punching is adaptive;
Said multi-disc stator punching laminates into stator core with two stator end plates, and some width of cloth muscle are embedded in the dovetail groove of said stator core one by one, two of every width of cloth muscle respectively with the said stator end plate that is positioned at the stator core two ends on lug welding.
The fastening structure of above-mentioned alternating current machine stator core, wherein, the outer face of said each lug is not higher than the groove floor of corresponding said stator end plate.
The fastening structure of above-mentioned alternating current machine stator core, wherein, the width of the dovetail groove on the width of said width of cloth muscle and the said stator punching is quantitative matched in clearance.
The fastening structure of above-mentioned alternating current machine stator core, wherein, the material of said width of cloth muscle is a band steel 35, the tensile strength sigma of this material
b>=530MPa, yield strength σ
s>=315MPa.
The fastening structure of the alternating current machine stator core of the utility model, adopt width of cloth muscle only with core end plate on lug weld the technical scheme that width of cloth muscle and punching are not welded mutually; Avoided the damage of stator punching insulating barrier like this; Both guaranteed the rigidity and the compactness of whole stator core, and solved traditional welding technology again and caused destruction the stator punching insulating barrier, thus the eddy current loss of minimizing stator core; Reduce the temperature rise of motor, improve efficiency of motor.
Description of drawings
Fig. 1 a is the sketch map of fastening structure of the alternating current machine stator core of prior art;
Fig. 1 b is the end view of Fig. 1 a;
Fig. 2 a is the sketch map of fastening structure of the alternating current machine stator core of utility model;
Fig. 2 b is the end view of Fig. 2 a;
Fig. 3 is the structural representation of stator punching in the fastening structure of alternating current machine stator core of utility model;
Fig. 4 a is the structural representation of stator end plate in the fastening structure of alternating current machine stator core of utility model;
Fig. 4 b is the end view of Fig. 4 a.
Embodiment
In order to understand the technical scheme of the utility model better, below through embodiment particularly and combine accompanying drawing at length to explain:
See also Fig. 2 a to Fig. 4 b; The fastening structure of a kind of alternating current machine stator core of the utility model; Be applicable to that medium-sized alternating current machine external pressure sets press-fiting of sub-iron core, this fastening structure comprises multi-disc stator punching 1 ', two stator end plates 2 ' and some width of cloth muscle 3 ', wherein:
Be provided with some dovetail grooves 10 on the cylindrical of stator punching 1 ' radial equipartition;
Be provided with on the cylindrical of stator end plate 2 ' radial equipartition with stator punching 1 ' on the identical groove 20 of dovetail groove 10 quantity; Stator end plate 2 ' welds a lug 21 respectively on the outer face of the bottom land of corresponding each groove 20, the outer face of each lug 21 is not higher than groove 20 bottom surfaces of corresponding stator end plate 2 ';
The shape of some width of cloth muscle 3 ' and 10 shape adaptation of the dovetail groove on the stator punching 1 ';
Multi-disc stator punching 1 ' laminates into stator core with two stator end plates 2 '; Some width of cloth muscle 3 ' are embedded in the dovetail groove 10 of stator core one by one, two of every width of cloth muscle 3 ' respectively with the stator end plate 2 ' that is positioned at the stator core two ends on lug 21 welding.
The material of width of cloth muscle 3 ' is a band steel 35, the tensile strength sigma b of this material >=530MPa, yield strength σ s >=315MPa; When stretching width of cloth muscle 3 ', should prevent its distortion and fracture.
The fastening structure of the alternating current machine stator core of the utility model; Since width of cloth muscle 3 ' only with stator end plate 2 ' on lug 21 weld mutually; Width of cloth muscle 3 ' does not weld with stator punching 1 ', the damage of stator punching 1 ' insulating barrier when having avoided stator core fastening like this, thus reduced the increase of stator core eddy current loss; Reduce the temperature rise of motor, improve efficiency of motor.
The width of width of cloth muscle 3 ' and the width of the dovetail groove on the stator punching 1 ' 10 are quantitative matched in clearance, can substitute stator punching flute profile rod location.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the utility model; And be not the qualification that is used as the utility model; As long as in the connotation scope of the utility model, all will drop in claims scope of the utility model variation, the modification of the above embodiment.
Claims (4)
1. the fastening structure of an alternating current machine stator core comprises multi-disc stator punching, two stator end plates and some width of cloth muscle, it is characterized in that,
Be provided with some dovetail grooves on the cylindrical of said stator punching radial equipartition;
Be provided with on the cylindrical of said stator end plate radial equipartition with said stator punching on the identical groove of dovetail groove quantity, said stator end plate is provided with a lug respectively on the outer face of the bottom land of corresponding each groove;
Dovetail groove shape on the shape of said some width of cloth muscle and the said stator punching is adaptive;
Said multi-disc stator punching laminates into stator core with two stator end plates, and some width of cloth muscle are embedded in the dovetail groove of said stator core one by one, two of every width of cloth muscle respectively with the said stator end plate that is positioned at the stator core two ends on lug welding.
2. the fastening structure of alternating current machine stator core according to claim 1 is characterized in that, the outer face of said each lug is not higher than the groove floor of corresponding said stator end plate.
3. the fastening structure of alternating current machine stator core according to claim 1 is characterized in that, the width of the dovetail groove on the width of said width of cloth muscle and the said stator punching is quantitative matched in clearance.
4. the fastening structure of alternating current machine stator core according to claim 1 is characterized in that, the material of said width of cloth muscle is a band steel 35, the tensile strength sigma of this material
b>=530MPa, yield strength σ
s>=315MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204952068U CN202363997U (en) | 2011-12-02 | 2011-12-02 | Fastening structure of stator core of alternating current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204952068U CN202363997U (en) | 2011-12-02 | 2011-12-02 | Fastening structure of stator core of alternating current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202363997U true CN202363997U (en) | 2012-08-01 |
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ID=46575153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204952068U Expired - Fee Related CN202363997U (en) | 2011-12-02 | 2011-12-02 | Fastening structure of stator core of alternating current motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051082A (en) * | 2012-12-30 | 2013-04-17 | 南车株洲电机有限公司 | Stator core fixed structure and box-type motor |
| WO2015154220A1 (en) * | 2014-04-08 | 2015-10-15 | 南车株洲电机有限公司 | Method and device for stacking and fixing stator core used in traction motor of narrow gauge locomotive |
| CN105048659A (en) * | 2015-09-10 | 2015-11-11 | 湘潭电机股份有限公司 | Stator iron core for motor and motor |
| CN105308831A (en) * | 2013-05-24 | 2016-02-03 | 西门子公司 | Air-cooled electric machine having cooling ribs formed from stator sheet |
-
2011
- 2011-12-02 CN CN2011204952068U patent/CN202363997U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051082A (en) * | 2012-12-30 | 2013-04-17 | 南车株洲电机有限公司 | Stator core fixed structure and box-type motor |
| CN105308831A (en) * | 2013-05-24 | 2016-02-03 | 西门子公司 | Air-cooled electric machine having cooling ribs formed from stator sheet |
| CN105308831B (en) * | 2013-05-24 | 2018-05-29 | 西门子公司 | Air cooled motor with the cooling fin being made of stator lasmination |
| WO2015154220A1 (en) * | 2014-04-08 | 2015-10-15 | 南车株洲电机有限公司 | Method and device for stacking and fixing stator core used in traction motor of narrow gauge locomotive |
| CN105048659A (en) * | 2015-09-10 | 2015-11-11 | 湘潭电机股份有限公司 | Stator iron core for motor and motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20161202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |