CN202391966U - Magnetic suspension bearings and magnetic suspension motor - Google Patents
Magnetic suspension bearings and magnetic suspension motor Download PDFInfo
- Publication number
- CN202391966U CN202391966U CN2011205690931U CN201120569093U CN202391966U CN 202391966 U CN202391966 U CN 202391966U CN 2011205690931 U CN2011205690931 U CN 2011205690931U CN 201120569093 U CN201120569093 U CN 201120569093U CN 202391966 U CN202391966 U CN 202391966U
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- magnetic suspension
- symmetrical
- permanent magnet
- camber
- horizontal part
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Abstract
The utility model provides a magnetic suspension motor, which comprises a motor casing, two radially-symmetrical magnetic suspension bearings fixed at two ends of the motor casing and a rotary shaft penetrating through the magnetic suspension bearings. The rotary shaft is provided with an axial magnetic-flux permanent magnet disc, and an axial magnetic-flux drive winding disc opposite to the axial magnetic-flux permanent magnet disc is fixed in the motor casing. Each magnetic suspension bearing comprises a bearing chamber, a permanent magnet inner ring and a permanent magnet outer ring, wherein the permanent magnet inner ring and the permanent magnet outer ring are coaxial and fixed in the bearing chamber. The same poles of the permanent magnet inner rings and the permanent magnet outer rings are opposite, the permanent magnet inner rings are provided with symmetrical outer curved surfaces, the permanent magnet outer rings are provided with symmetrical inner curved surfaces, and air gaps are reserved between the symmetrical outer curved surfaces and the symmetrical inner curved surfaces. Due to the fact that the surfaces corresponding to the permanent magnet inner rings and the permanent magnet outer rings are curved surfaces and can produce axial and radial magnetic forces simultaneously. The radial magnetic forces enable the rotary shaft to be suspended, prevent the rotary shaft from moving radially and reduce friction. The axial magnetic forces prevent the rotary shaft from moving axially, and the positioning is accurate.
Description
Technical field
The utility model relates to the magnetic levitation technology field, relates in particular to a kind of magnetic suspension bearing and magnetic suspension motor.
Background technique
The bearing of existing motor is divided into thrust-bearing and radial bearing by its function, is divided into by its internal structure and slides and rolling bearing.In each class bearing, there is following problem, at first, because mechanical friction causes energy loss; Next is that the temperature rising causes damage of bearings; The 3rd is to make maintenance, replacing frequently because of fretting wear.
Magnetic suspension bearing is that a kind of magnetic force that utilizes is suspended in the space with rotor; Realize the non-contact bearing device that carries without any need for medium, compare with sliding bearing that magnetic bearing does not have Mechanical Contact with traditional rolling; Do not need the power transmission medium, avoided the energy loss that produces owing to friction.But the conventional magnetic levitation bearing is generally magnetic suspension bearing radially, has guaranteed the radial suspension of rotatingshaft.But to not restriction of rotatingshaft, axial float takes place in rotatingshaft easily when rotating, influence transmission performance in the axial direction.
The model utility content
The purpose of the utility model is to overcome the deficiency of existing technology, provides a kind of while at magnetic suspension bearing and the motor of axially upwards controlling rotatingshaft with the footpath.
The technological scheme of the utility model provides a kind of magnetic suspension bearing; Comprise bearing chamber; Be fixed on ring and permanent magnetism outer shroud in the permanent magnetism coaxial in the said bearing chamber, ring is relative with the homopolarity of said permanent magnetism outer shroud in the said permanent magnetism, and ring has symmetrical positive camber in the said permanent magnetism; Said permanent magnetism outer shroud has symmetrical negative camber, leaves air gap between said symmetrical positive camber and the said symmetrical negative camber.
Preferably, said symmetrical negative camber and said symmetrical positive camber are hemisphere face, or conical surface, or arc surface.
Preferably, horizontal part and outer horizontal part in the two ends of said symmetrical negative camber and said symmetrical positive camber extend to form respectively vertically leave air gap between said interior horizontal part and the said outer horizontal part.
Preferably, be coated with one deck diamagnetism layer fully on the said symmetrical positive camber.
Preferably, be coated with one deck diamagnetism layer fully on the said symmetrical negative camber.
Preferably, be coated with one deck diamagnetism layer fully on said symmetrical positive camber and the outer horizontal part.
Preferably, be coated with one deck diamagnetism layer fully on said symmetrical negative camber and the interior horizontal part.
Preferably, said diamagnetism layer is a graphite, or bismuth, or copper, or zinc, or Graphene.
Another technological scheme of the utility model provides a kind of magnetic suspension motor; Comprise electric machine casing; Be fixed on the magnetic suspension bearing of two radial symmetric at said electric machine casing two ends; Pass the rotatingshaft of said magnetic suspension bearing, said rotatingshaft is provided with the axial flux permanent magnet body disc, and said electric machine casing internal fixation has the axial magnetic flux relative with said axial flux permanent magnet body disc to drive the winding dish; Said magnetic suspension bearing comprises bearing chamber; Be fixed on ring and permanent magnetism outer shroud in the permanent magnetism coaxial in the said bearing chamber; Ring is relative with the homopolarity of said permanent magnetism outer shroud in the said permanent magnetism; Ring has symmetrical positive camber in the said permanent magnetism, and said permanent magnetism outer shroud has symmetrical negative camber, leaves air gap between said symmetrical positive camber and the said symmetrical negative camber.
Preferably, said symmetrical negative camber and said symmetrical positive camber are hemisphere face, or conical surface, or arc surface.
Preferably, horizontal part and outer horizontal part in the two ends of said symmetrical negative camber and said symmetrical positive camber extend to form respectively vertically leave air gap between said interior horizontal part and the said outer horizontal part.
Preferably, be coated with one deck diamagnetism layer fully on the said symmetrical positive camber.
Preferably, be coated with one deck diamagnetism layer fully on the said symmetrical negative camber.
Preferably, be coated with one deck diamagnetism layer fully on said symmetrical positive camber and the outer horizontal part.
Preferably, be coated with one deck diamagnetism layer fully on said symmetrical negative camber and the interior horizontal part.
Preferably, said diamagnetism layer is a graphite, or bismuth, or copper, or zinc, or Graphene.
Preferably, said axial flux permanent magnet body disc is provided with a plurality of permanent magnets, and the polarity of adjacent said permanent magnet is opposite; Said axial magnetic flux drives the winding dish and is provided with the corresponding iron-less core coil winding of a plurality of and said permanent magnet number.
Preferably, be provided with many group axial flux permanent magnet body discs and said axial magnetic flux in the said magnetic suspension motor and drive the winding dish.
After adopting technique scheme, has following beneficial effect:, can produce simultaneously axially and radial magnetic force because interior ring of permanent magnetism and the corresponding face of permanent magnetism outer shroud are curved surface.Radial magnetic force suspends rotatingshaft and prevents rotatingshaft radially, reduces friction; Axial magnetic prevents the rotatingshaft axial float, accurately the location.
Description of drawings
Fig. 1 is the embodiment's one of the utility model magnetic suspension motor a structural representation;
Fig. 2 is the sectional view of A-A among Fig. 1;
Fig. 3 is the sectional view of B-B among Fig. 1;
Fig. 4 is the embodiment's two of the utility model magnetic suspension motor a structural representation.
Reference character is aimed at table:
1---electric machine casing 2---magnetic suspension bearing 3---rotatingshaft
21---bearing chamber 22---ring 23 in the permanent magnetism---permanent magnetism outer shrouds
24---the symmetrical positive cambers of air gap 25---diamagnetism layer 221---
222---the interior horizontal parts of outer horizontal part 231---symmetrical negative camber 232---
31---axial flux permanent magnet body disc 32---axial magnetic flux drives the winding dish
311---permanent magnet 321---coil winding
Embodiment
Further specify the embodiment of the utility model below in conjunction with accompanying drawing.
Like Fig. 1-shown in Figure 3, be the embodiment's one of the utility model magnetic suspension motor structural representation.Magnetic suspension motor comprises electric machine casing 1; Be fixed on the magnetic suspension bearing 2 of two radial symmetric at electric machine casing 1 two ends; Pass the rotatingshaft 3 of magnetic suspension bearing 2; Rotatingshaft 3 is provided with axial flux permanent magnet body disc 31, and electric machine casing 1 internal fixation has the axial magnetic fluxs relative with axial flux permanent magnet body disc 31 to drive winding dish 32; Magnetic suspension bearing 2 comprises bearing chamber 21; Be fixed on ring 22 and permanent magnetism outer shroud 23 in the permanent magnetism coaxial in the bearing chamber 21; Ring 22 is relative with the homopolarity of permanent magnetism outer shroud 23 in the permanent magnetism; Ring 22 has symmetrical positive camber 221 in the permanent magnetism, and permanent magnetism outer shroud 23 has symmetrical negative camber 231, leaves air gap 24 between symmetrical positive camber 221 and the symmetrical negative camber 231.
During work, axial magnetic flux drives 32 energisings of winding dish, and the magnetic field acting in conjunction of the magnetic field that axial magnetic flux driving winding dish 32 produces and the generation of axial flux permanent magnet body disc 31 makes the rotational of rotatingshaft 3 around self.Rotatingshaft 3 can produce radially whipping and axial float in rotating process.Because ring 22 has symmetrical positive camber 221 in the permanent magnetism; Permanent magnetism outer shroud 23 has symmetrical negative camber 231; Ring 22 and permanent magnetism outer shroud 23 adopt the axial charging modes in the permanent magnetism, make interior ring 22 of permanent magnetism and permanent magnetism outer shroud 23 produce the space distribution magnetic field that meets design requirement, its space distribution magnetic field interaction on every side; And produce thus axially and radial magnetic force; It is axially with radially whipping power, self gravitation are closely related with axial float power on the size of radial flux and direction and the rotatingshaft 3, when rotatingshaft 3 proper functioning, and the radially whipping power on the lucky and rotatingshaft 3 of the radial force that space distribution magnetic field produces and the equal and opposite in direction, in the opposite direction with joint efforts of gravity; Axial float power equal and opposite in direction on axial force and the rotatingshaft 3, in the opposite direction, thus guaranteed that rotatingshaft 3 rotates stably.
When main shaft quits work or remain static; Because the radial and axial magnetic flux that space distribution magnetic field produces diminishes or disappears; Along with the variation of mechanical force on the main shaft, regulate the size and Orientation of space distribution magnetic field flux automatically, reach relative equilibrium; To realize the normal operation of magnetic suspension bearing, realize the basic demand of design.
Preferably, symmetrical negative camber 231 is a hemisphere face with symmetrical positive camber 221, or conical surface, or arc surface.The utility model is not limited to above-mentioned shape, as long as sectional shape is non-linear, can be simultaneously produces the protection domain that all belongs to the utility model of magnetic force on radial and axial.
In the present embodiment, be coated with one deck diamagnetism layer on the symmetrical positive camber 221 fully.Suction and repulsion can be produced between two blocks of permanent magnets, yet magnetic suspension can not be independently realized stablizing.If but in permanent magnet suspension, introduced diamagnetic substance, then just could make p-m rotor realize stable suspersion at normal temperatures, and need not add mechanical assistance.The magnetic susceptibility of diamagnetic substance is negative value, under the effect of external magnetic field, can produce the effect of slight resistance external magnetic field.Use diamagnetic substance in the permanent magnet suspension structure, for the magnet that suspends diamagnetic stable effect is arranged, when levitated magnet had the trend of the skew up and down that departs from the equilibrium position, the diamagnetism of diamagnetic substance will resist this trend, makes it balance again.
Preferably, diamagnetism layer 25 is a graphite, or bismuth, or copper, or zinc, or Graphene.In the present embodiment, use the material of Graphene as the diamagnetism layer, Graphene is a kind ofly to form the flat film that hexangle type is the honeycomb lattice by carbon atom with the sp2 hybrid orbital, has only the two-dimensional material of a carbon atom thickness.The magnetic susceptibility of Graphene can reach-3.5 * 10
-5Emu/g, its diamagnetism is greater than graphite, bismuth, copper and zinc, near superconductor.But because the application conditions of superconductor in the middle of magnetic suspension is complicated, the ambient temperature that needs is low.And Graphene just has good diamagnetism at normal temperatures, satisfies the stable requirement of magnetic suspension.
Preferably, also can only on symmetrical negative camber 231, be coated with one deck grapheme material fully.
In the present embodiment, shown in Fig. 2-3, axial flux permanent magnet body disc 31 is provided with a plurality of permanent magnets 311, and the polarity of adjacent permanent magnet 311 is opposite; Axial magnetic flux drives winding dish 32 and is provided with a plurality of iron-less core coil windings 321 corresponding with permanent magnet 311 numbers.
In the present embodiment, as shown in Figure 1, be provided with many group axial flux permanent magnet body discs 31 in the magnetic suspension motor and drive winding dish 32 with axial magnetic flux.
As shown in Figure 4, be the embodiment's two of the utility model magnetic suspension motor structural representation.Embodiment two is that with embodiment one difference horizontal part 232 and outer horizontal part 222 in the two ends of symmetrical negative camber 231 and symmetrical positive camber 221 extend to form respectively vertically leave air gap 24 between interior horizontal part 232 and the outer horizontal part 222.Only form radial magnetic force between interior horizontal part 232 and the outer horizontal part 222, strengthened the intensity of radial magnetic force, make rotatingshaft 3 more stable diametrically.
In the present embodiment, be coated with one deck diamagnetism layer 25 fully on symmetrical positive camber 221 and the outer horizontal part 222.
Preferably, also can only on symmetrical negative camber 231 and interior horizontal part 232, be coated with one deck diamagnetism layer 25 fully.
Above-described only is the principle and the preferred embodiment of the utility model.Should be pointed out that for the person of ordinary skill of the art, on the basis of the utility model principle, can also make some other modification, also should be regarded as the protection domain of the utility model.
Claims (18)
1. magnetic suspension bearing; Comprise bearing chamber, be fixed on ring and permanent magnetism outer shroud in the permanent magnetism coaxial in the said bearing chamber, ring is relative with the homopolarity of said permanent magnetism outer shroud in the said permanent magnetism; It is characterized in that; Ring has symmetrical positive camber in the said permanent magnetism, and said permanent magnetism outer shroud has symmetrical negative camber, leaves air gap between said symmetrical positive camber and the said symmetrical negative camber.
2. magnetic suspension bearing according to claim 1 is characterized in that, said symmetrical negative camber and said symmetrical positive camber are hemisphere face, or conical surface, or arc surface.
3. magnetic suspension bearing according to claim 1 is characterized in that, horizontal part and outer horizontal part in the two ends of said symmetrical negative camber and said symmetrical positive camber extend to form respectively vertically leave air gap between said interior horizontal part and the said outer horizontal part.
4. magnetic suspension bearing according to claim 1 is characterized in that, is coated with one deck diamagnetism layer on the said symmetrical positive camber fully.
5. magnetic suspension bearing according to claim 1 is characterized in that, is coated with one deck diamagnetism layer on the said symmetrical negative camber fully.
6. magnetic suspension bearing according to claim 3 is characterized in that, is coated with one deck diamagnetism layer fully on said symmetrical positive camber and the outer horizontal part.
7. magnetic suspension bearing according to claim 3 is characterized in that, is coated with one deck diamagnetism layer on said symmetrical negative camber and the interior horizontal part fully.
8. according to any described magnetic suspension bearing of claim 4-7, it is characterized in that said diamagnetism layer is a graphite, or bismuth, or copper, or zinc, or Graphene.
9. magnetic suspension motor; Comprise electric machine casing; Be fixed on the magnetic suspension bearing of two radial symmetric at said electric machine casing two ends; Pass the rotatingshaft of said magnetic suspension bearing, said rotatingshaft is provided with the axial flux permanent magnet body disc, and said electric machine casing internal fixation has the axial magnetic flux relative with said axial flux permanent magnet body disc to drive the winding dish; Said magnetic suspension bearing comprises bearing chamber; Be fixed on ring and permanent magnetism outer shroud in the permanent magnetism coaxial in the said bearing chamber; Ring is relative with the homopolarity of said permanent magnetism outer shroud in the said permanent magnetism, it is characterized in that, ring has symmetrical positive camber in the said permanent magnetism; Said permanent magnetism outer shroud has symmetrical negative camber, leaves air gap between said symmetrical positive camber and the said symmetrical negative camber.
10. magnetic suspension motor according to claim 9 is characterized in that, said symmetrical negative camber and said symmetrical positive camber are hemisphere face, or conical surface, or arc surface.
11. magnetic suspension motor according to claim 9 is characterized in that, horizontal part and outer horizontal part in the two ends of said symmetrical negative camber and said symmetrical positive camber extend to form respectively vertically leave air gap between said interior horizontal part and the said outer horizontal part.
12. magnetic suspension motor according to claim 9 is characterized in that, is coated with one deck diamagnetism layer on the said symmetrical positive camber fully.
13. magnetic suspension motor according to claim 9 is characterized in that, is coated with one deck diamagnetism layer on the said symmetrical negative camber fully.
14. magnetic suspension motor according to claim 11 is characterized in that, is coated with one deck diamagnetism layer fully on said symmetrical positive camber and the outer horizontal part.
15. magnetic suspension motor according to claim 11 is characterized in that, is coated with one deck diamagnetism layer on said symmetrical negative camber and the interior horizontal part fully.
16., it is characterized in that said diamagnetism layer is a graphite, or bismuth, or copper, or zinc, or Graphene according to any described magnetic suspension motor of claim 12-15.
17. magnetic suspension motor according to claim 9 is characterized in that, said axial flux permanent magnet body disc is provided with a plurality of permanent magnets, and the polarity of adjacent said permanent magnet is opposite; Said axial magnetic flux drives the winding dish and is provided with the corresponding iron-less core coil winding of a plurality of and said permanent magnet number.
18. magnetic suspension motor according to claim 17 is characterized in that, is provided with many group axial flux permanent magnet body discs and said axial magnetic flux in the said magnetic suspension motor and drives the winding dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205690931U CN202391966U (en) | 2011-12-30 | 2011-12-30 | Magnetic suspension bearings and magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205690931U CN202391966U (en) | 2011-12-30 | 2011-12-30 | Magnetic suspension bearings and magnetic suspension motor |
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| Publication Number | Publication Date |
|---|---|
| CN202391966U true CN202391966U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205690931U Expired - Fee Related CN202391966U (en) | 2011-12-30 | 2011-12-30 | Magnetic suspension bearings and magnetic suspension motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN202391966U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537046A (en) * | 2011-12-30 | 2012-07-04 | 张冰青 | Magnetic levitation bearings and magnetic levitation motor |
| CN104314976A (en) * | 2014-11-14 | 2015-01-28 | 北京石油化工学院 | Two-degree-of-freedom internal rotor permanent magnet biased spherical radial magnetic bearing |
| CN104373461A (en) * | 2014-11-15 | 2015-02-25 | 北京石油化工学院 | Double-permanent magnet inner-rotor permanent magnet biased spherical radial magnetic bearing |
| CN104389903A (en) * | 2014-11-15 | 2015-03-04 | 北京石油化工学院 | Double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing |
| CN104533950A (en) * | 2015-01-21 | 2015-04-22 | 北京石油化工学院 | Radial magnetic bearing with outer rotor conical spherical magnetic poles |
| CN104565066A (en) * | 2015-01-21 | 2015-04-29 | 北京石油化工学院 | Spherical radial pure-electromagnetism magnetic bearing of outer rotor |
| CN104675858A (en) * | 2015-02-04 | 2015-06-03 | 中国船舶重工集团公司第七0七研究所 | Air-magnet hybrid hemispherical bearing gyro motor |
| CN106969034A (en) * | 2017-05-27 | 2017-07-21 | 深圳智慧能源技术有限公司 | Permanent magnetism type magnetic suspension bearing |
-
2011
- 2011-12-30 CN CN2011205690931U patent/CN202391966U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537046A (en) * | 2011-12-30 | 2012-07-04 | 张冰青 | Magnetic levitation bearings and magnetic levitation motor |
| CN104314976A (en) * | 2014-11-14 | 2015-01-28 | 北京石油化工学院 | Two-degree-of-freedom internal rotor permanent magnet biased spherical radial magnetic bearing |
| CN104314976B (en) * | 2014-11-14 | 2017-01-11 | 北京石油化工学院 | Two-degree-of-freedom internal rotor permanent magnet biased spherical radial magnetic bearing |
| CN104373461A (en) * | 2014-11-15 | 2015-02-25 | 北京石油化工学院 | Double-permanent magnet inner-rotor permanent magnet biased spherical radial magnetic bearing |
| CN104389903A (en) * | 2014-11-15 | 2015-03-04 | 北京石油化工学院 | Double-permanent magnet outer rotor permanent magnet-biased spherical radial magnetic bearing |
| CN104533950A (en) * | 2015-01-21 | 2015-04-22 | 北京石油化工学院 | Radial magnetic bearing with outer rotor conical spherical magnetic poles |
| CN104565066A (en) * | 2015-01-21 | 2015-04-29 | 北京石油化工学院 | Spherical radial pure-electromagnetism magnetic bearing of outer rotor |
| CN104675858A (en) * | 2015-02-04 | 2015-06-03 | 中国船舶重工集团公司第七0七研究所 | Air-magnet hybrid hemispherical bearing gyro motor |
| CN106969034A (en) * | 2017-05-27 | 2017-07-21 | 深圳智慧能源技术有限公司 | Permanent magnetism type magnetic suspension bearing |
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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: 20120822 Termination date: 20161230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |