CN203585088U - Novel permanent magnet biased axial magnetic suspension bearing - Google Patents
Novel permanent magnet biased axial magnetic suspension bearing Download PDFInfo
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- CN203585088U CN203585088U CN201320779604.1U CN201320779604U CN203585088U CN 203585088 U CN203585088 U CN 203585088U CN 201320779604 U CN201320779604 U CN 201320779604U CN 203585088 U CN203585088 U CN 203585088U
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- stator disk
- inwall
- sleeve
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- 239000000725 suspension Substances 0.000 title claims abstract description 40
- 238000004804 winding Methods 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 41
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000008041 oiling agent Substances 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 235000016936 Dendrocalamus strictus Nutrition 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a novel permanent magnet offset axial magnetic suspension bearing, which comprises a stator sleeve A, a stator sleeve B, a permanent magnet ring, a stator disc A, a stator disc B, a stator disc C, a stator disc D, a control winding A, a control winding B, a main shaft and a rotor core; the permanent magnet ring is arranged between the stator sleeve A and the stator sleeve B and is connected with the stator sleeve A and the stator sleeve B; the cross-sectional thicknesses of the stator sleeve A, the stator sleeve B and the permanent magnet ring are equal; the stator disc A and the stator disc B are respectively arranged at two ends of the inner wall of the stator sleeve A; the control winding A is arranged between the stator disc A and the stator disc B; the stator disc C and the stator disc D are respectively arranged at two ends of the inner wall of the stator sleeve B; the control winding B is arranged between the stator disc C and the stator disc D.
Description
Technical field
The utility model relates to a kind of magnetic suspension bearing, specifically a kind of novel permanent magnetic biased axial magnetic suspension bearing; Belong to magnetic levitation technology field.
Background technique
As far back as 1842, English physicist Earnshaw was just studied and discusses magnetic suspension bearing technology, and the basic principle of magnetic suspension bearing technology is to utilize magnetic force between stator iron core and rotor iron core to realize the contactless supporting of rotating shaft.Owing to there is no Mechanical Contact between stator and rotor, magnetic suspension bearing has the following advantages:
1. can bear high rotating speed.Adopt the rotating shaft of magnetic suspension bearing supporting under hundreds thousand of operating modes that turn overcritical, per minute, to move, its peripheral velocity is only subject to the restriction of rotating shaft material intensity.As a rule, in the situation that axle journal diameter is identical, the rotating ratio that the rotating shaft that adopts magnetic suspension bearing to support can reach adopts the rotating shaft of rolling bearing supporting approximately high 2 times, about higher 3 times than the rotating shaft that adopts sliding supported condition.Germany FAG company draws by test: the dn value of rolling bearing, it is the product of bearing average diameter and main shaft limit speed, be about 2.5～3 * 106mmr/min, the dn value of sliding bearing is about 0.8～2 * 106mmr/min, and the dn value of magnetic suspension bearing is about 4～6 * 106mmr/min.
2. friction power loss is less.When 10000r/min, the power consumption of magnetic suspension bearing approximately only has 6% of hydrldynamic pressure lubrication supporting, only has 17% of rolling bearing, and energy-saving effect is obvious.
Life-span long, maintenance cost is low.Because magnetic suspension bearing relies on magnetic force suspension rotating shaft, between stator and rotor, therefore there is not the life problems of being brought by friction, wearing and tearing and contact fatigue, so the life-span of magnetic suspension bearing and reliability are all far above traditional mechanical bearing in machinery-free contact.
4. without adding oiling agent.Owing to there not being mechanical friction between stator and rotor, during work, do not need to add oiling agent, therefore the pollution problem that does not exist oiling agent to cause environment, in the occasion that bans use of oiling agent and forbid polluting, as occasions such as vacuum equipment, ultra-clean aseptic rooms, magnetic suspension bearing has unrivaled advantage.
According to magnetic field, set up the difference of mode, magnetic suspension bearing can be divided into permanent-magnet type, electromagnetism eccentrically arranged type and permanent magnet bias type three types.
Permanent-magnet type magnetic suspension bearing mainly utilizes repulsion intrinsic between magnetic material or suction (between permanent-magnet material, between permanent-magnet material and soft magnetic material) to realize the suspension of rotating shaft, and it is simple in structure, and energy loss is few, but rigidity and damping are also all smaller.
Electromagnetism eccentrically arranged type magnetic suspension bearing is set up bias magnetic field by passing into galvanic magnetic bias winding in air gap, by the control winding that passes into size and Orientation and be all subject to the alternating current controlled in real time, in air gap, set up controlling magnetic field, the stack of these two magnetic fields in air gap and counteracting have produced the magnetic field suction that size and Orientation can ACTIVE CONTROL, thereby realized the stable suspersion of rotor, such magnetic suspension bearing rigidity is large, can accurately control, but it is also all larger to produce unit bearing capacity required volume, weight and power consumption.
Permanent magnet bias type magnetic suspension bearing adopts permanent-magnet material to substitute magnetic bias coil and produces required bias magnetic field, can reduce largely the energy loss of magnetic suspension bearing, along with magnetic suspension bearing technology is in Aero-Space, the extensive use in the field such as stored energy and transformation of energy, power consumption to magnetic suspension bearing, volume, the aspects such as performance have proposed more and more higher requirement, the feature of permanent magnet bias type magnetic suspension bearing makes it in these fields, have irreplaceable advantage, permanent magnet bias type magnetic suspension bearing technology also becomes an important directions of magnetic suspension bearing technical research and development.
There is following deficiency in the axial magnetic suspension bearing in currently available technology:
1, a kind of permanent-magnetic biased axial magnetic bearing that Chinese Patent Application No. 200510011272.2 provides, its leakage field is larger, and utilization ratio is not high;
2, the permanent magnet that Chinese Patent Application No. 200910030777.1 provides is positioned at epitrochanterian mixed type axial magnetic bearing, and its inside and outside axial stator magnetic pole and radius difference are larger, cause leakage coefficient difference larger, is difficult to guarantee that in axial air-gap, bias magnetic field is identical;
3, a kind of low power consumption axial magnetic bearing with redundancy structure that Chinese Patent Application No. 200710098751.1 provides, its leakage field is larger, and utilization ratio is not high;
4, a kind of novel permanent magnetic eccentrically arranged type axial magnetic suspension bearing that Chinese Patent Application No. 201120216533.5 provides, its structure is more complicated, and volume is larger, and energy consumption is larger.
Summary of the invention
The purpose of this utility model is to propose a kind of more simple in structure, and volume is little, lightweight, the permanent magnet bias type axial magnetic suspension bearing of less energy consumption.
In order to solve the problems of the technologies described above, the technological scheme that the utility model is taked is:
A novel permanent magnetic biased axial magnetic suspension bearing, comprises stator sleeve A, stator sleeve B, magnet ring, stator disk A, stator disk B, stator disk C, stator disk D, controls winding A, controls winding B, main shaft and rotor iron core;
Magnet ring is arranged between stator sleeve A and stator sleeve B, connecting stator sleeve A and stator sleeve B; The section thickness of described stator sleeve A, stator sleeve B and magnet ring all equates;
Stator disk A and stator disk B are separately positioned on the two ends of stator sleeve A inwall; Controlling winding A is arranged between stator disk A and stator disk B;
Stator disk C and stator disk D are separately positioned on the two ends of stator sleeve B inwall; Controlling winding B is arranged between stator disk C and stator disk D;
Between two end faces of described stator sleeve A and stator disk D together with controlling the inwall of winding A, control between inwall, the inwall of stator disk B and the inwall of stator disk C of winding B and form an air cavity;
Rotor iron core is contained on main shaft, and follows main shaft and rotate; Main shaft penetrates stator disk A, stator disk B, stator disk C, stator disk D simultaneously, controls winding A and control winding B, and makes rotor iron core be positioned at aforementioned air cavity;
The outer surface of described rotor iron core and control between the inwall of winding A, all leave the 5th air gap between the outer surface of rotor iron core and the inwall of control winding B;
Between the inwall of the inwall of the outer surface of described rotor iron core and stator disk B, the outer surface of rotor iron core and stator disk C, all leave the first air gap;
Between the left side of described rotor iron core and stator disk A, leave interstice; Between the right side of described rotor iron core and stator disk D, leave the 3rd air gap;
Between the inwall of described stator disk A and the outer surface of main shaft, all leave the 4th air gap between the inwall of stator disk D and the outer surface of main shaft.
The width of the first air gap described in the utility model, interstice and the 3rd air gap is 0.3-1.5mm.The first air gap in the utility model, interstice and the 3rd air gap effect are mainly the media as magnetic field energy storage, the preferred 0.3-1.5mm of its width.
Described in the utility model, the width of the 4th air gap and the 5th air gap is 1-3mm.The 4th air gap in the utility model is mainly to prevent that associated components generation from contacting, the preferred 1-3mm of its width with the 5th air gap effect.
The width of magnet ring described in the utility model is 1-3mm.In the utility model, the Main Function of magnet ring is in magnetic suspension bearing, to set up static bias magnetic field.
The utility model advantage: the utility model utilizes permanent magnet to set up bias magnetic field in air gap, utilizes the interaction between stator disk and rotor iron core to realize rotor at axial stable suspersion.
1, a kind of permanent-magnetic biased axial magnetic bearing that the utility model patent and Chinese Patent Application No. 200510011272.2 provide, compares: gap length total in the utility model is less, has less leakage field.
2, the permanent magnet that the utility model patent and Chinese Patent Application No. 200910030777.1 provide is positioned at epitrochanterian mixed type axial magnetic bearing, compare: in the utility model, the shape of magnetic pole of the stator is identical with size, can guarantee that the bias magnetic field in all air gaps is identical.
3, a kind of low power consumption axial magnetic bearing with redundancy structure that the utility model patent and Chinese Patent Application No. 200710098751.1 provide, compares: gap length total in the utility model is less, has less leakage field.
4, a kind of novel permanent magnetic eccentrically arranged type axial magnetic suspension bearing that the utility model patent and Chinese Patent Application No. 201120216533.5 provide, compares in the utility model and only has a rotor core, has fairly simple structure.
In sum: with respect to above axial magnetic suspension bearing patent of the same type, this patent has overcome above cited shortcoming, and structure is more compact, and volume is less, and energy loss is less, is a novel reliable structure, has wide market application foreground.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1, stator disk A, 2, rotor iron core, 3, main shaft, 4, stator disk B, 5, control winding A, 6, stator sleeve A, 7, stator sleeve B, 8, control winding B, 9, stator disk C, 10, stator disk D, 11, magnet ring, 12, the first air gap, 13, interstice, the 14, the 3rd air gap, 15, the 4th air gap, the 16, the 5th air gap, 17, air cavity.
Embodiment
For content of the present utility model is become apparent more, below in conjunction with accompanying drawing 1 and embodiment, be further described.
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model preferred embodiment is as follows:
As shown in Figure 1, novel permanent magnetic biased axial magnetic suspension bearing of the present utility model, comprise stator disk A1, rotor iron core 2, main shaft 3, stator disk B4, control winding A5, stator sleeve A6, stator sleeve B7, control winding B8, stator disk C9, stator disk D10, magnet ring 11.
Stator disk A1 and stator disk B4 are separately positioned on the two ends of stator sleeve A6 inwall; Controlling winding A5 is arranged between stator disk A1 and stator disk B4;
Stator disk C9 and stator disk D10 are separately positioned on the two ends of stator sleeve B7 inwall; Controlling winding B8 is arranged between stator disk C9 and stator disk D10;
Between two end faces of described stator sleeve A6 and stator disk D10 together with controlling the inwall of winding A5, control between inwall, the inwall of stator disk B4 and the inwall of stator disk C9 of winding B8 and form an air cavity 17;
Rotor iron core 2 is contained on main shaft 3, and follows main shaft 3 and rotate; Main shaft 3 penetrates stator disk A1, stator disk B4, stator disk C9, stator disk D10 simultaneously, controls winding A5 and control winding B8, and makes rotor iron core 2 be positioned at aforementioned air cavity 17;
The outer surface of described rotor iron core 2 and control between the inwall of winding A5, all leave the 5th air gap 16 between the outer surface of rotor iron core 2 and the inwall of control winding B8;
Between the inwall of the outer surface of the inwall of the outer surface of described rotor iron core 2 and stator disk B4, rotor iron core 2 and stator disk C9, all leave the first air gap 12;
Between the left side of described rotor iron core 2 and stator disk A1, leave interstice 13; Between the right side of described rotor iron core 2 and stator disk D7, leave the 3rd air gap 14;
Between the outer surface of the inwall of described stator disk A1 and main shaft 3, all leave the 4th air gap 15 between the inwall of stator disk D10 and the outer surface of main shaft 3.
Described in the utility model, the width of the first air gap 12, interstice 13 and the 3rd air gap 14 is 0.3-1.5mm.The first air gap 12 in the utility model, interstice 13 and the 3rd air gap 14 effects are mainly the media as magnetic field energy storage, the preferred 0.3-1.5mm of its width.
Described in the utility model, the width of the 4th air gap 15 and the 5th air gap 16 is 1-3mm.The 4th air gap 15 in the utility model is mainly to prevent that associated components generation from contacting, the preferred 1-3mm of its width with the 5th air gap 16 effects.
The utility model utilizes the interstice 13 of permanent magnet 11 between stator disk A1 right side and rotor iron core 2 left sides, the first air gap 12 between stator disk B4 inwall and rotor iron core 2 outer surfaces, between stator disk C9 inwall and rotor iron core 2 outer surfaces, sets up bias magnetic field in the 3rd air gap 14 between stator disk D10 left side and rotor iron core 2 right sides;
Utilize and control the interstice 13 of winding A5 between stator disk A1 right side and rotor iron core 2 left sides, in the first air gap 12 between stator disk B4 inwall and rotor iron core 2 outer surfaces, set up controlling magnetic field; Utilize in the 3rd air gap 14 of controlling between the first air gap 12, stator disk D10 left side and rotor iron core 2 right sides of winding B9 between stator disk C9 inwall and rotor iron core 2 outer surfaces and set up controlling magnetic field; Utilize the interaction between stator disk A1, stator disk B4 and rotor iron core 2, the active that the interaction between stator disk C9, stator disk D10 and rotor iron core 2 realizes main shaft 3 axial freedoms suspends.
The utility model does not relate to partly all same as the prior art or employing prior aries to be realized.
Claims (4)
1. a novel permanent magnetic biased axial magnetic suspension bearing, is characterized in that: comprise stator sleeve A(6), stator sleeve B(7), magnet ring (11), stator disk A(1), stator disk B(4), stator disk C(9), stator disk D(10), control winding A(5), control winding B(8), main shaft (3) and rotor iron core (2);
Magnet ring (11) is arranged on stator sleeve A(6) and stator sleeve B(7) between, connecting stator sleeve A(6) and stator sleeve B(7); Described stator sleeve A(6), stator sleeve B(7) all equal with the section thickness of magnet ring (11);
Stator disk A(1) and stator disk B(4) be separately positioned on stator sleeve A(6) two ends of inwall; Control winding A(5) be arranged on stator disk A(1) and stator disk B(4) between;
Stator disk C(9) and stator disk D(10) be separately positioned on stator sleeve B(7) two ends of inwall; Control winding B(8) be arranged on stator disk C(9) and stator disk D(10) between;
Described stator sleeve A(6) and stator disk D(10) two end faces between together with controlling winding A(5) inwall, control winding B(8) inwall, stator disk B(4) inwall and stator disk C(9) inwall between form an air cavity (17);
It is upper that rotor iron core (2) is contained in main shaft (3), and follow main shaft (3) and rotate; Main shaft (3) penetrates stator disk A(1 simultaneously), stator disk B(4), stator disk C(9), stator disk D(10), control winding A(5) and control winding B(8), and make rotor iron core (2) be positioned at aforementioned air cavity (17);
The outer surface of described rotor iron core (2) and control winding A(5) inwall between, outer surface and the control winding B(8 of rotor iron core (2)) inwall between all leave the 5th air gap (16);
The outer surface of described rotor iron core (2) and stator disk B(4) inwall, outer surface and the stator disk C(9 of rotor iron core (2)) inwall between all leave the first air gap (12);
The left side of described rotor iron core (2) and stator disk A(1) between leave interstice (13); The right side of described rotor iron core (2) and stator disk D(7) between leave the 3rd air gap (14);
Between the outer surface of inwall described stator disk A(1) and main shaft (3), stator disk D(10) inwall and the outer surface of main shaft (3) between all leave the 4th air gap (15).
2. novel permanent magnetic biased axial magnetic suspension bearing as claimed in claim 1, is characterized in that: the width of described the first air gap (12), interstice (13) and the 3rd air gap (14) is 0.3-1.5mm.
3. novel permanent magnetic biased axial magnetic suspension bearing as claimed in claim 1, is characterized in that: the width of described the 4th air gap (15) and the 5th air gap (16) is 1-3mm.
4. novel permanent magnetic biased axial magnetic suspension bearing as claimed in claim 1, is characterized in that: the width of described magnet ring (11) is 1-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320779604.1U CN203585088U (en) | 2013-11-29 | 2013-11-29 | Novel permanent magnet biased axial magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320779604.1U CN203585088U (en) | 2013-11-29 | 2013-11-29 | Novel permanent magnet biased axial magnetic suspension bearing |
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| Publication Number | Publication Date |
|---|---|
| CN203585088U true CN203585088U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320779604.1U Expired - Fee Related CN203585088U (en) | 2013-11-29 | 2013-11-29 | Novel permanent magnet biased axial magnetic suspension bearing |
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| Country | Link |
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| CN (1) | CN203585088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615465A (en) * | 2013-11-29 | 2014-03-05 | 南京工业大学 | Novel permanent magnet biased axial magnetic suspension bearing |
| CN109681525A (en) * | 2018-12-10 | 2019-04-26 | 南京磁之汇电机有限公司 | Magnetic suspension bearing and motor |
-
2013
- 2013-11-29 CN CN201320779604.1U patent/CN203585088U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615465A (en) * | 2013-11-29 | 2014-03-05 | 南京工业大学 | Novel permanent magnet biased axial magnetic suspension bearing |
| CN103615465B (en) * | 2013-11-29 | 2016-02-10 | 南京工业大学 | Novel permanent magnet biased axial magnetic suspension bearing |
| CN109681525A (en) * | 2018-12-10 | 2019-04-26 | 南京磁之汇电机有限公司 | Magnetic suspension bearing and motor |
| CN109681525B (en) * | 2018-12-10 | 2020-10-02 | 南京磁之汇电机有限公司 | Magnetic suspension bearing 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: 20140507 Termination date: 20141129 |
|
| EXPY | Termination of patent right or utility model |