CN203632393U - Rare earth permanent magnet motor rotor structure - Google Patents
Rare earth permanent magnet motor rotor structure Download PDFInfo
- Publication number
- CN203632393U CN203632393U CN201320604443.2U CN201320604443U CN203632393U CN 203632393 U CN203632393 U CN 203632393U CN 201320604443 U CN201320604443 U CN 201320604443U CN 203632393 U CN203632393 U CN 203632393U
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- rotor core
- earth permanent
- permanent magnet
- magnet motor
- magnetic pole
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Abstract
The utility model discloses a rare earth permanent magnet motor rotor structure. The rare earth permanent magnet motor rotor structure includes a rotor iron core and magnetic poles attached to the outer surface of the rotor iron core; a plurality of protruding edges which extend along the axial direction of the rotor iron core and are used for positioning the magnetic poles from a radial direction and a circumferential direction are formed on the outer circumference of the rotor iron core; T-shaped slots are formed between the protruding edges; a plurality of small magnets on the surface of the rotor iron core surface are spliced with one another along the axial direction and the circumferential direction so as to form each magnetic pole, and the spliced magnetic pole is clamping between two adjacent protruding edges; the clamping connection between the magnets can be realized through wedge blocks embedded in the T-shaped slots; and two end surfaces of the rotor iron core are provided with baffles used for positioning the magnetic poles from the axial direction. According to the rare earth permanent magnet motor rotor structure of the utility model, the protruding edges arranged on the outer surface of the rotor iron core, the T-shaped slots between the protruding edges and the wedge blocks are used for fixing the magnetic poles at the radial direction and the circumferential direction, and the baffles are used for fixing the magnetic poles at the axial direction, and therefore, the magnetic poles formed through splicing the small magnets can be firmly fixed on the whole; and with the T-shaped slots and the wedge blocks adopted, problems existing in the splicing and fixation of surface-mount magnets of middle and large-size motors can be solved.
Description
Technical field
The utility model relates to a kind of rare-earth permanent-magnet electric machine, particularly a kind of rare-earth permanent magnet motor rotor structure of medium-and-large-sized few hypervelocity.
Background technology
In the design of medium-and-large-sized few hypervelocity magneto, due to magnet steel take up room larger, therefore adopt surface-mount type magnetic pole more.What the fixing means of surface-mount type magnet steel was commonly used has following several form:
1. directly with glue, magnet steel is adhered to rotor core surface;
With screw and pressing plate or be fixed cover magnet steel is fixed on to rotor core surface;
3. adopt fabric strip or wire, metal tape that magnet steel is bundled in to rotor core surface;
4. above several fixing meanss mix use.
For example, publication number is CN102097878A, and utility model name is called the Chinese patent application of " structure for fixing magnetic poles ", adopts ring face pressing plate, and the mode of gluing is fixed on magnet steel on rotor core on magnet steel, be a kind of combination of simplifying outer fixed cover and adhesive means in fact; What Granted publication CN202586551U utility model name was called that the Chinese patent of " magneto that adopts surface-mount type alinco assembled mode " adopts is thread mill drilling on rotor core, with the mode of trip bolt and the fixing magnet steel of interpolar pressing plate, also gluing between magnet steel and rotor core of while.
In practical operation is used, various surface-mount type magnet steel fixing meanss more or less existed some defects in the past, as: adhesive means poor stability, also can not do Non-Destructive Testing, firm reliability is difficult to guarantee.And the heat-resisting quantity of glue is poor, as more conventional epoxy glue, in the time approaching approximately 120 ℃, there will be the performance situation that sharply declines, therefore merely with the fixing magnet steel of glue, thermal adaptability is bad.
Thread mill drilling on rotor core separately, when motor High Rotation Speed, strength ratio is poor, and high to rotor core requirement, rotor core post-production complexity.In addition, interpolar pressing plate can only be used for pole edge position, to the magnetic pole of large-size machine, is generally made up of the little magnet steel of polylith, and pole end-plate can not use.
Add the mode of outer fixed cover, complex process, needs the various parts of specialized designs, causes complex rotor structure, and rigging error easily increases, and each part is processed the time-consuming material that takes.
Fabric strip binding mode, if fabric strip is tied up thickly, affects air gap, and axial width uniformity is not easy to guarantee; If fabric strip is tied up thinly, firm reliability is difficult to guarantee, easily loosening.Fabric strip binding mode circumferencial direction poor location, easily circumferentially positioning.
By wire or metal tape binding mode, although can guarantee the reliability that magnet steel is fixing in intensity, complex process, particularly when after wire or metal tape breakage, must cause motor interpolar to damage, therefore long-term reliability is difficult to ensure card.
Utility model content
In view of the above-mentioned defect existing in prior art, the utility model provides a kind of rare-earth permanent-magnet electric machine Surface Mount field structure of good fixing effect of simple in structure, easily manufactured and magnet steel, is particularly suitable for using in large high-speed rare-earth permanent-magnet electric machine.
The utility model adopts following technical scheme: a kind of medium-and-large-sized high speed rare-earth permanent magnet motor rotor structure, comprises rotor core and paste the magnetic pole on described rotor core outer surface.On the excircle of rotor core, be formed with extend along its axial direction for from radially with multiple fins of circumference both direction location magnetic pole, between fin, offer T-shaped groove, each magnetic pole is spliced with circumferencial direction on rotor core surface vertically by the little magnet steel of polylith, after splicing, magnetic pole is connected between adjacent two described fins, and adopts the voussoir being embedded in T-shaped groove to compress the piece of adjacent little magnet steel simultaneously.In the both ends of the surface of rotor core, be provided for from the baffle plate of magnetic pole described in axial location.
T-shaped groove is opened on rotor core circumferencial direction, the stitching portion of adjacent two blocks of described magnet steel, and stub end is towards the center of described rotor core.On rotor core circumferencial direction, between the stitching portion of adjacent two blocks of little magnet steel, form the gap of bell mouth shape, bell-mouthed big opening end is towards the outer surface of magnet steel.Voussoir one end and T-shaped groove are suitable, and there is the Access Division suitable with the gap of described bell mouth shape one end.Voussoir wedge in T-shaped groove is useful on the round steel of fixing voussoir.
In addition, can be between magnet steel and rotor core, between voussoir and magnet steel, apply adhesive glue between voussoir and rotor core.Rise and fill fit-up gap and strengthen fixation.
Compared with prior art, rare-earth permanent magnet motor rotor design feature of the present utility model is:
1, rare-earth permanent magnet motor rotor structure of the present utility model is by being arranged on T-shaped groove and the voussoir between fin and the fin on rotor core outer surface, radially with on circumference both direction fixing magnet steel, fix in the axial direction magnet steel with baffle plate, made magnet steel fixed.
2, rare-earth permanent magnet motor rotor structure of the present utility model by offering T-shaped groove on rotor core, utilization is arranged on voussoir in T-shaped groove and strengthens to magnet steel radially and circumferencial direction fixing, well having solved medium-and-large-sized motor surface-mount type magnet steel and having spliced fixing problem.
3, rare-earth permanent magnet motor rotor structure of the present utility model have simple in structure, amount of parts is few, technological operation is convenient and simple, compact conformation, the advantage that holistic cost is cheap.
Accompanying drawing explanation
Fig. 1 is radially semi-section schematic diagram of rare-earth permanent magnet motor rotor iron core of the present utility model;
Fig. 2 is for forming rare-earth permanent magnet motor rotor core stamping schematic diagram of the present utility model;
Fig. 3 is A part enlarged drawing in Fig. 1;
Fig. 4 is B part enlarged drawing in Fig. 1.
Description of reference numerals
The little magnet steel of 1-rotor core 2-
3-rotor punching 4-projection
6-watt of shape draw-in groove of 5-fin
7-pole clearance 8-T type groove
9-voussoir 10-wedging position
11-round steel 12-the first inclined plane
13-the second inclined plane
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.
As shown in Figure 1, rare-earth permanent magnet motor rotor structure of the present utility model comprises rotor core 1 and pastes the magnetic pole on rotor core 1 outer surface, and magnetic pole is to be spliced along the axial and circumferential of rotor core 1 by the little magnet steel 2 of polylith.
Rotor core 1 is to be overlapped together and formed by multi-disc rotor punching 3 as shown in Figure 2, the excircle of rotor punching 3 is provided with multiple protruding 4 and for inlaying the multiple T-shaped groove 8 of voussoir 9, in the time multiple rotor punchings 3 being overlapped together to formation rotor core 1, as shown in Fig. 1 and Fig. 3, Fig. 4, on the excircle of rotor core 1, be formed with the multiple fins 5 that extend along its axial direction, and fin 5 arranges in pairs, between adjacent two pairs of fins 5, can form as required pole clearance 7.Fin 5 has the first inclined plane 12, the first inclined plane 12 of a pair of fin 5 forms "eight" shape, be used for blocking magnetic pole, the cross section that is formed for clamping magnetic pole between every pair of fin is watt shape draw-in groove 6 of watt shape, the cross section of magnetic pole be shaped as watt shape suitable with watt shape of shape draw-in groove 6.Magnetic pole is to be spliced along the axial and circumferential directions on the surface of rotor core 1 by the little magnet steel 2 of polylith, little magnet steel 2 has two the second inclined planes 13 of "eight" shape at the two ends of circular arc direction, make on the circumferencial direction of rotor core 1, the stitching portion of adjacent two blocks of little magnet steel 2 forms the gap of bell mouth shape, and bell-mouthed big opening end is towards the outer surface of little magnet steel 2.T-shaped groove 8 aligns with the gap of little magnet steel bell mouth shape.As can be seen from Figure 1, voussoir 9 is actually the little structure in large centre, two, and voussoir one end and described T-shaped groove 8 suitable, there is the wedging position 10 suitable with the gap of described bell mouth shape one end.In T-shaped groove 8, be useful on the round steel 11 of fixing voussoir 9.In addition, in the both ends of the surface of rotor core 1, be provided for the baffle plate (not shown) from axial location magnetic pole.
In addition, can on the contact-making surface between little magnet steel 2 and rotor core 1, between voussoir 9 and little magnet steel 2 and between voussoir 9 and rotor core 1, be coated with the adhesive glue that is specifically designed to plastic-bonded magneto, to strengthen fixing and to fill the gap occurring because making error, thereby further strengthen fixed effect.
Rare-earth permanent-magnet electric machine surface-mounted rotor of the present utility model, adopt new-type magnet steel fixing means, radially and circumferentially fix by the fin 5 on rotor core and voussoir 9 conducts, and finally use round steel 11 wedgings, assembly manipulation is simple, fastening firm, and part is accelerated few, compact conformation, holistic cost is cheap.
Above embodiment is only exemplary embodiment of the present utility model, is not used in restriction the utility model, and protection range of the present utility model is defined by the claims.
Claims (7)
1. a rare-earth permanent magnet motor rotor structure, comprise rotor core and paste the magnetic pole on described rotor core outer surface, it is characterized in that, on the excircle of described rotor core, be formed with extend along its axial direction for the multiple fins from radially locate described magnetic pole with circumference both direction, between fin, offer T-shaped groove, each described magnetic pole is spliced with circumferencial direction on rotor core surface vertically by the little magnet steel of polylith, after described splicing, magnetic pole is connected between adjacent two described fins, and adopt the voussoir being embedded in described T-shaped groove to compress the piece of adjacent little magnet steel simultaneously, in the both ends of the surface of described rotor core, be provided for from the baffle plate of magnetic pole described in axial location.
2. rare-earth permanent magnet motor rotor structure according to claim 1, is characterized in that, described T-shaped groove is opened on rotor core circumferencial direction, the stitching portion of adjacent two blocks of described little magnet steel, and the stub end of described T-shaped groove is towards the center of described rotor core.
3. rare-earth permanent magnet motor rotor structure according to claim 1, is characterized in that, on circumferencial direction, forms the gap of bell mouth shape between the stitching portion of adjacent two blocks of described little magnet steel, and bell-mouthed big opening end is towards the outer surface of described little magnet steel.
4. rare-earth permanent magnet motor rotor structure according to claim 3, it is characterized in that, described voussoir one end and described T-shaped groove are suitable, and there is the Access Division suitable with the gap of described bell mouth shape one end, and wedge is useful on the round steel of fixing described voussoir in described T-shaped groove.
5. rare-earth permanent magnet motor rotor structure according to claim 1, it is characterized in that, fin on the excircle of described rotor core arranges in pairs, between every pair of fin, being formed for the cross section of magnetic pole described in clamping is the draw-in groove of watt shape, the cross section of described magnetic pole be shaped as watt shape suitable with the shape of described draw-in groove.
6. according to the rare-earth permanent magnet motor rotor structure described in any one in claim 1-4, it is characterized in that, between described little magnet steel and described rotor core, between described voussoir and little magnet steel, be coated with adhesive glue between described voussoir and rotor core.
7. rare-earth permanent magnet motor rotor structure according to claim 1, is characterized in that, the described fin on described rotor core adopts mould punching one-shot forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604443.2U CN203632393U (en) | 2013-09-27 | 2013-09-27 | Rare earth permanent magnet motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604443.2U CN203632393U (en) | 2013-09-27 | 2013-09-27 | Rare earth permanent magnet motor rotor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203632393U true CN203632393U (en) | 2014-06-04 |
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ID=50818831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604443.2U Expired - Lifetime CN203632393U (en) | 2013-09-27 | 2013-09-27 | Rare earth permanent magnet motor rotor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203632393U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333158A (en) * | 2014-10-11 | 2015-02-04 | 镇江中船现代发电设备有限公司 | Permanent magnet motor rotor structure |
| CN104518589A (en) * | 2013-09-27 | 2015-04-15 | 安徽明腾永磁机电设备有限公司 | Middle-large size high speed rare-earth permanent magnet motor magnetic steel locking structure |
-
2013
- 2013-09-27 CN CN201320604443.2U patent/CN203632393U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518589A (en) * | 2013-09-27 | 2015-04-15 | 安徽明腾永磁机电设备有限公司 | Middle-large size high speed rare-earth permanent magnet motor magnetic steel locking structure |
| CN104518589B (en) * | 2013-09-27 | 2017-12-15 | 安徽明腾永磁机电设备有限公司 | Rare-earth permanent magnet motor rotor structure |
| CN104333158A (en) * | 2014-10-11 | 2015-02-04 | 镇江中船现代发电设备有限公司 | Permanent magnet motor rotor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
|
| CX01 | Expiry of patent term |