CN201827326U - Magnetic coupler - Google Patents
Magnetic coupler Download PDFInfo
- Publication number
- CN201827326U CN201827326U CN2010201291726U CN201020129172U CN201827326U CN 201827326 U CN201827326 U CN 201827326U CN 2010201291726 U CN2010201291726 U CN 2010201291726U CN 201020129172 U CN201020129172 U CN 201020129172U CN 201827326 U CN201827326 U CN 201827326U
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- permanent magnet
- rotor
- magnetic coupling
- utility
- model
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a magnetic coupler which can transmit quite a large torque and has quite a small rotation lag angle. The outer circle of an internal rotor and the inner circle of an external rotor are respectively provided with a permanent magnet in a manner of mosaic structure. The N-S pole of each permanent magnet is arranged along the axial direction of the rotor. The permanent magnets which are fixed to the rotor or a stator in a manner of mosaic structure is arranged in a manner that each two permanent magnet of the same polarity is opposite in polarity with two adjacent permanent magnets, thereby a structure like NNSSNNSS ... is formed.
Description
Technical field
The utility model relates to a kind of magnetic drive device, promptly common alleged magnetic coupling.Magnetic coupling of the present utility model is by the permanent magnet that is individually fixed in internal rotor cylindrical place and is fixed in the permanent magnet of external rotor inner circle and is arranged on the inner rotor shaft respectively and external rotor coupling outward, and bearing constitutes.
Background technique
Magnetic coupling is to use the magnetic force that permanent-magnet material or electromagnet produced, and comes a kind of magnetic drive of realizable force or torque (power) non contact transmission.Magnetic material in the existing magnetic drive is to arrange with the adjacent layout of opposite polarity two magnet, and its arrangement mode and orientation type and are to be arranged on the inside and outside rotor with big magnetic patch as shown in Figure 1, adopt the binder mucilage binding to fix again.But this fixation method is unsuitable in some particular application, as in nuclear reaction system, the organic adhesive that is used for fixing permanent magnet can be arranged distortion at magnetic force magnetic material because factors such as irradiation, high temperature can lose efficacy to come off, and can't realize the effect of transmitting torque.
Second deficiency of existing magnetic coupling is when transmitting than high pulling torque, its inner and outer rotors can produce bigger retardation angle, according to the test of reality, the existing retardation angle of magnetic coupling when moment of torsion is 50N.m is 9 degree, and so big retardation angle is unsuitable for the higher transmission of required precision.
Summary of the invention
The utility model provides a kind of prior art deficiency that overcomes, and can be applicable to high irradiation, high-temperature workplace, as is applied to the magnetic coupling in the nuclear reaction system, and the utility model also can have much smaller than the prior art retardation angle simultaneously.
Magnetic coupling of the present utility model be on the cylindrical of internal rotor and on the interior circle of external rotor by the mosaic structure fixed permanent magnet, and the N-S utmost point of each permanent magnet axial arranged along rotor.
Each permanent magnet of the present utility model is the slightly different shapes that have wedge shape of size, and this shape can make inlaying of permanent magnet more solid and reliable.
Magnetic coupling of the present utility model, on internal rotor and external rotor with the fixing permanent magnet of mosaic structure by the polarity anti-phase layout of the identical permanent magnet of per two polarity with adjacent two permanent magnets, formation is as NNSSNNSS ... structure.
Magnetic coupling of the present utility model, the permanent magnet minimum number of arranging respectively on its inside and outside rotor is 16, the permanent magnet quantity of optimal placement is 32 on its inside and outside rotor.
The utility model has so just overcome prior art and has adopted gluing fixing deficiency owing to be to adopt mosaic structure that permanent magnet is fixed on the inside and outside rotor, makes it can be applied to the field that prior art is unsuitable for using.Test also shows, when permanent magnet arranges that by the identical permanent magnet of per two polarity and the pole reversal of adjacent two permanent magnets formation is as NNSSNNSS ... structure can reduce retardation angle in the transmission to greatest extent.The retardation angle of the utility model actual measurement only is 0.5 degree.Test also shows, when internal rotor of the present utility model and external rotor respectively are provided with permanent magnet blocks more than 16, the moment of torsion that can make the retardation angle of device transmission and be transmitted has reasonable cooperation, and when internal rotor of the present utility model and external rotor respectively are provided with 32 permanent magnet blocks, can obtain best effect, its retardation angle minimum, and the moment of torsion that is transmitted is for maximum.
Description of drawings
Accompanying drawing 1 is the inside and outside rotor schematic cross-section of existing magnetic coupling, and inside and outside epitrochanterian permanent magnet is fixing by organic binder among Fig. 1.Accompanying drawing 2 is the inside and outside rotor schematic cross-section of magnetic coupling magnetic coupling of the present utility model, and inside and outside epitrochanterian permanent magnet of the present utility model as seen from Figure 2 is fixed thereon by mosaic mode.Fig. 3 is the relation curve between magnetic coupling number of magnetic poles of the present utility model and transmitting torque.
Embodiment
Accompanying drawing 2 is an an embodiment's of the present utility model concrete structure, as seen from Figure 2, the N-S utmost point of each permanent magnet of the present utility model is axial arranged along rotor, but is fixed with permanent magnet with mosaic mode respectively on the cylindrical of internal rotor of the present utility model and on the interior circle of external rotor.Be to process the structure that is used for permanent magnet at inside and outside rotor place in concrete enforcement with wire cutting machine tool.For the permanent magnetism physical efficiency well is embedded on the inside and outside rotor, permanent magnet can be processed into the slightly different shapes that have wedge shape of size by inlaying combination.
Correlation test of the present utility model shows, when inlaying magnet, it is one group with per two identical permanent magnets of polarity, the opposite polarity of two groups of adjacent permanent magnets is promptly pressed NNSSNNSS ... the retardation angle that mode is fixed between inside and outside rotor when Coupler is rotated diminishes.
Correlation test of the present utility model is also found when magnetic pole increases, the retardation angle of transmission can more must diminish, but but number of magnetic poles when too much the moment of torsion of its transmission can diminish again, particularly have less rotational hysteresis angle and bigger transmitting torque during greater than 16 when permanent magnet quantity, its concrete test structure can be referring to the curve shown in the accompanying drawing 3.Prove that through test of many times when magnetic pole of the present utility model was 32, its transferable moment of torsion was maximum, and its retardation angle is minimum, measured value is less than 0.5 degree.
Claims (5)
1. magnetic coupling, by the permanent magnet that is individually fixed in internal rotor cylindrical place and external rotor inner circle be arranged on the inner rotor shaft respectively and coupling that external rotor is outer, and bearing constitutes, it is characterized in that being fixed with permanent magnet with mosaic structure respectively on the cylindrical of internal rotor and on the interior circle of external rotor, and the N-S utmost point of each permanent magnet axial arranged along rotor.
2. magnetic coupling according to claim 1 is characterized in that each permanent magnet is to vary in size and has the shape of wedge shape.
3. magnetic coupling according to claim 1 and 2 is characterized in that on internal rotor and external rotor with the polarity anti-phase layout of the fixing permanent magnet of mosaic structure by the identical permanent magnet of per two polarity and adjacent two permanent magnets.
4. magnetic coupling according to claim 3 is characterized in that the permanent magnet of layout is minimum respectively on the inside and outside rotor is 16 grades.
5. according to the described magnetic coupling of claim 3, it is characterized in that the permanent magnet of arranging respectively on the inside and outside rotor is 32 utmost points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201291726U CN201827326U (en) | 2010-02-11 | 2010-02-11 | Magnetic coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201291726U CN201827326U (en) | 2010-02-11 | 2010-02-11 | Magnetic coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201827326U true CN201827326U (en) | 2011-05-11 |
Family
ID=43965865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201291726U Expired - Lifetime CN201827326U (en) | 2010-02-11 | 2010-02-11 | Magnetic coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201827326U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764549A (en) * | 2010-02-11 | 2010-06-30 | 甘肃省科学院磁性器件研究所 | Magnetic coupling |
| CN102611251A (en) * | 2012-03-14 | 2012-07-25 | 哈尔滨工业大学 | Motor driving system with permanent magnetic positioner |
| CN103023271A (en) * | 2012-11-22 | 2013-04-03 | 甘肃省科学院磁性器件研究所 | Conical permanent magnet speed controller |
| CN103023270A (en) * | 2011-09-22 | 2013-04-03 | 兰州海兰德泵业有限公司 | Magnetic transmission coupler |
| CN104467359A (en) * | 2013-09-13 | 2015-03-25 | 天津永磁节能科技有限公司 | Permanent magnetic speed regulating energy-saving coupling |
-
2010
- 2010-02-11 CN CN2010201291726U patent/CN201827326U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764549A (en) * | 2010-02-11 | 2010-06-30 | 甘肃省科学院磁性器件研究所 | Magnetic coupling |
| CN103023270A (en) * | 2011-09-22 | 2013-04-03 | 兰州海兰德泵业有限公司 | Magnetic transmission coupler |
| CN102611251A (en) * | 2012-03-14 | 2012-07-25 | 哈尔滨工业大学 | Motor driving system with permanent magnetic positioner |
| CN103023271A (en) * | 2012-11-22 | 2013-04-03 | 甘肃省科学院磁性器件研究所 | Conical permanent magnet speed controller |
| CN104467359A (en) * | 2013-09-13 | 2015-03-25 | 天津永磁节能科技有限公司 | Permanent magnetic speed regulating energy-saving coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20120711 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110511 Effective date of abandoning: 20120711 |