CN105356635A - Rotor silicon steel sheet pile structure with low eddy current loss and device for closely fitting structure and shaft - Google Patents
Rotor silicon steel sheet pile structure with low eddy current loss and device for closely fitting structure and shaft Download PDFInfo
- Publication number
- CN105356635A CN105356635A CN201510731028.7A CN201510731028A CN105356635A CN 105356635 A CN105356635 A CN 105356635A CN 201510731028 A CN201510731028 A CN 201510731028A CN 105356635 A CN105356635 A CN 105356635A
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- CN
- China
- Prior art keywords
- silicon steel
- steel sheet
- sheet pile
- external insulation
- rotating shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
A rotor silicon steel sheet pile structure with low eddy current loss and a device for closely fitting the structure and a shaft are provided. Each silicon steel punching sheet (1) is provided with a shaft hole area (2), deformation joints (3), internal insulation pin holes (4), trapezoidal holes (5) and external insulation pin holes (6) sequentially from the center to the edge. The diameter of the shaft hole area (2) is the same with that of a rotating shaft. The multiple deformation joints (3) are circular arc joints around the shaft hole area (2). The internal insulation pin holes (4) are rectangular holes distributed symmetrically. The trapezoidal holes (5) are disposed in the middle of the radius of the silicon steel punching sheet (1). The external insulation pin holes (6) are round holes. The external insulation pin holes (6) and the internal insulation pin holes (4) are crossly distributed at equal intervals based on the central angle. The silicon steel punching sheets (1) are stacked together, and internal insulation pins (8) are embedded into the internal insulation pin holes (4), external insulation pins (7) are embedded into the external insulation pin holes (6), and therefore, the silicon steel sheets (1) are fixed into a silicon steel sheet pile (11). The silicon steel sheet pile structure is nested into a corresponding position of the shaft after being heated, and the structure closely fits the shaft after being cooled. The deformation joints (3) are reserved cooling shrinkage joints for ensuring that the rotating shaft rotates at high speed and drives the stress of the silicon steel sheet pile (11) to be distributed uniformly. The silicon steel sheet pile structure is of low manufacturing cost and considerable economic value.
Description
Technical field
The invention belongs to the device that a kind of rotor coiled silicon steel sheet structure is optimized.
Background technology
In today that environmental issue is outstanding, electric motor car substitutes motorcycle gradually, decreases environomental pollution source.Sight is turned to electric automobile by people, and in the process of electric automobile replacing gasoline automobile, motor plays very important effect, and high-power brushless direct current machine becomes the first-selection of electric automobile.
Because the motor part of high speed rotating is rotor, its eddy current reduces the efficiency of motor on the one hand, if the heat that eddy current produces on the other hand does not distribute in time, permanent magnet will be made to demagnetize, reduce velocity of rotation, motor cannot normally work, and more seriously, eddy current produces too much heat can make burn-down of electric motor.The method that existing rotor and axle are fixed is generally adopt to be whittled into two parallel planes in the two sides of axle, and silicon steel sheet pile embeds by the plan position approach of pruning.When rotor high-speed rotates, axle produces enough large moment rotor driven and rotates, and can not produce the situation producing relative motion between silicon steel sheet pile and rotating shaft.But this structure can make the both sides of axle prune a part, concentrating of stress between rotating shaft and silicon steel sheet pile can be caused on the one hand, for the rotor of high speed rotating, easily damage rotating shaft; On the other hand due to little time large when rotor high-speed rotation can make the gap between rotor and stator yoke, reduce electric efficiency.Therefore adopt rotating shaft not cutting way be a desirable method.
Summary of the invention
Rotating shaft is not cut by the rotor and the closely sealed place of silicon steel sheet pile that the invention solves High Rotation Speed, and when can ensure again High Rotation Speed, rotating shaft can normally drive silicon steel sheet pile to rotate, and there will not be the problem producing relative motion between rotating shaft and silicon steel sheet pile.
The technical solution adopted for the present invention to solve the technical problems is:
Technical conceive: (a) adopt rotating shaft side not cutting way directly assemble rotor silicon steel sheet pile; B the punching of () silicon steel sheet wins the tensile force between rotating shaft with deformation, tensile force is uniformly distributed along rotating shaft side; C the punching of () silicon steel sheet leaves multiple hole, on the one hand for reducing eddy current, distribute the heat that rotor produces due to High Rotation Speed on the other hand.
Invention for apparatus: low eddy current loss rotor silicon steel sheet pile structure and the device closely sealed with axle thereof.
The beneficial effect of this patent is: rotating shaft and silicon steel sheet pile closely sealed, during High Rotation Speed, axial stress is tangentially uniformly distributed.Extend the rotating shaft life-span.Cost of manufacture is low, and economic worth is considerable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 device vertical view
Fig. 2 device end view
In the drawings, 1. silicon steel sheet punching, 2. axis hole district, 3. movement joint, dielectric pin sub-aperture, 5. trapezoidal hole 4., 6. external insulation pinhole, 7. external insulation pin, insulation pin, 9. movement joint junction, 10. trapezoidal hole junction 8., 11. silicon steel sheet piles
Embodiment
In FIG, silicon steel sheet punching (1) Shang Cong center is axis hole district (2), movement joint (3), interior dielectric pin sub-aperture (4), trapezoidal hole (5), external insulation pinhole (6) successively to edge.The diameter in its central axis hole district (2) is identical with the diameter of rotating shaft; Movement joint (3) is the seam of the some sections of circular arcs around axis hole district (2), and its corresponding diameter is a bit larger tham the diameter of rotating shaft, is out of shape lock ring at axle during for assembling; Interior dielectric pin sub-aperture (4) is several symmetrical rectangular holes, for embedding interior insulation pin (8); Trapezoidal hole (5) is positioned at the centre position of silicon steel sheet punching (1) radius, strictly get on very well, hole is just as trapezoidal, two trapezoidal limits are parallel, and two limits of trapezoidal hole (5) are isocentric circular arc, trapezoidal hole is distributed with several symmetrically, reduces eddy current on the one hand, is used for heat radiation on the other hand; External insulation pinhole (6) is positioned at the radius maximum of silicon steel sheet punching (1), is dispersed with several circular holes symmetrically, for embedding external insulation pin (7).
In fig. 2, some silicon steel sheet punchings (1) are stacked, insulation pin (8) in embedding in interior dielectric pin sub-aperture (4), embed external insulation pin (7) in dielectric pin sub-aperture (6) outside, fixing silicon steel sheet (1) forms silicon steel sheet pile (11).Depict movement joint junction (9) and trapezoidal hole junction (10) in fig. 2.
Successful example, silicon steel sheet punching (1) thickness is 0.5mm, stacking 90 layers, and silicon steel sheet pile (11) thickness is 45mm, and axle radius is 20mm.The corresponding inside radius of movement joint (3) is 12mm, and outer radius is 12.5mm, and the seam width of movement joint (3) is 0.5mm, and movement joint junction width is 1mm.The slot of interior dielectric pin sub-aperture (4) in 1mm × 2mm, distributes 4 symmetrically.The corresponding inside radius of trapezoidal hole (5) is 24mm, and outer radius is 34mm, and distribute 8 symmetrically, trapezoidal hole junction (9) width is 10mm.External insulation pinhole (6) be distributed in symmetrically radius be 42mm circumferentially, radius is 4mm, 4 external insulation pinholes (6) and 4 interior dielectric pin sub-aperture (4), with central angle equally spaced cross-distribution, are spaced apart miter angle.
Silicon steel sheet pile structure in example stops eddy circulating owing to adopting stacked structure and silicon steel sheet borehole, so have low eddy current loss feature, axis hole district (2) radius of silicon steel sheet pile (11) is identical with axle radius, adopt heating, after silicon steel sheet pile (11) is heated, the radius in axis hole district (2) is a bit larger tham the radius of axle, can be inserted on the corresponding position of axle, cooling is close to be afterwards combined on the shaft, wherein movement joint (3) is reserved cooling meat seam, guarantees that closely sealed rear rotating shaft High Rotation Speed drives the stress equilibrium distribution of silicon steel sheet pile (11).It should be noted that and stud with 8 blocks of permanent magnets in above-mentioned silicon steel sheet pile (11) and the closely sealed rear outside of rotating shaft, and dress up by plastic seal the rotor that radius is 60mm, belong to the category of another patent.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized technical solution of the present invention, make many possible variations and modification, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (6)
1. one kind low eddy current loss rotor silicon steel sheet pile structure and the device closely sealed with axle thereof.It is characterized in that: at silicon steel sheet punching (1) Shang You axis hole district (2), movement joint (3), interior dielectric pin sub-aperture (4), trapezoidal hole (5), external insulation pinhole (6).Insulation pin (8) and external insulation pin (7) in several silicon steel sheet punchings (1) to be stacked in interior dielectric pin sub-aperture (4) and external insulation pinhole (6) and to embed respectively, formation silicon steel sheet pile (11).The corresponding position of rotating shaft is enclosed within after silicon steel sheet pile (11) heating, closely sealed in rotating shaft after cooling.
2. movement joint according to claim 1 (3), for the seam of the some sections of circular arcs around axis hole district (2), its corresponding diameter is a bit larger tham the diameter of rotating shaft, when after silicon steel sheet pile (11) heating, the radius in axis hole district (2) also correspondingly expands, therefore silicon steel sheet pile (11) can be enclosed within the corresponding position of rotating shaft, closely sealed in rotating shaft after cooling, wherein movement joint (3) is exactly reserved cooling meat seam, guarantees that closely sealed rear rotating shaft High Rotation Speed drives the stress equilibrium distribution of silicon steel sheet pile (11).
3. interior dielectric pin sub-aperture (4) according to claim 1, for several symmetrical rectangular holes, when several silicon steel sheets heap poststack, insulation pin (8) in embedding in interior dielectric pin sub-aperture (4), fixing silicon steel sheet pile (11).
4. external insulation pinhole (6) according to claim 1, for several symmetrical circular holes, when several silicon steel sheets heap poststack, in external insulation pinhole (6), embed external insulation pin (7), fixing silicon steel sheet pile (11).External insulation pinhole (6) and interior dielectric pin sub-aperture (4) are with central angle equally spaced cross-distribution.
5. axis hole district (2) according to claim 1, rounded, its diameter is identical with shaft radius.
6. trapezoidal hole according to claim 1 (5), rounded, be positioned at the centre position of silicon steel sheet punching (1) radius, strictly get on very well, hole is just as trapezoidal, and two trapezoidal limits are parallel, and two limits of trapezoidal hole (5) are isocentric circular arc, trapezoidal hole is distributed with several symmetrically, reduces eddy current on the one hand, is used for heat radiation on the other hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510731028.7A CN105356635A (en) | 2015-11-02 | 2015-11-02 | Rotor silicon steel sheet pile structure with low eddy current loss and device for closely fitting structure and shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510731028.7A CN105356635A (en) | 2015-11-02 | 2015-11-02 | Rotor silicon steel sheet pile structure with low eddy current loss and device for closely fitting structure and shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105356635A true CN105356635A (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510731028.7A Pending CN105356635A (en) | 2015-11-02 | 2015-11-02 | Rotor silicon steel sheet pile structure with low eddy current loss and device for closely fitting structure and shaft |
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| CN (1) | CN105356635A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976917A (en) * | 2010-11-26 | 2011-02-16 | 湘潭电机股份有限公司 | Method for manufacturing rotor of intermediate frequency synchronous motor |
| CN102214962A (en) * | 2010-04-01 | 2011-10-12 | 天津市松正电动科技有限公司 | Novel rotor lamination structure |
| CN203774910U (en) * | 2014-03-31 | 2014-08-13 | 杭州中科赛思伺服电机有限公司 | V-shaped servo motor rotor punching sheet |
| CN203871938U (en) * | 2013-12-20 | 2014-10-08 | 珠海凌达压缩机有限公司 | Motor rotor of rotary compressor |
| CN104333152A (en) * | 2014-11-14 | 2015-02-04 | 广东美芝制冷设备有限公司 | Stator punching, motor and compressor |
-
2015
- 2015-11-02 CN CN201510731028.7A patent/CN105356635A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214962A (en) * | 2010-04-01 | 2011-10-12 | 天津市松正电动科技有限公司 | Novel rotor lamination structure |
| CN101976917A (en) * | 2010-11-26 | 2011-02-16 | 湘潭电机股份有限公司 | Method for manufacturing rotor of intermediate frequency synchronous motor |
| CN203871938U (en) * | 2013-12-20 | 2014-10-08 | 珠海凌达压缩机有限公司 | Motor rotor of rotary compressor |
| CN203774910U (en) * | 2014-03-31 | 2014-08-13 | 杭州中科赛思伺服电机有限公司 | V-shaped servo motor rotor punching sheet |
| CN104333152A (en) * | 2014-11-14 | 2015-02-04 | 广东美芝制冷设备有限公司 | Stator punching, motor and compressor |
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Application publication date: 20160224 |