CN202937638U - Permanent magnet bias type axial magnetic suspension bearing - Google Patents
Permanent magnet bias type axial magnetic suspension bearing Download PDFInfo
- Publication number
- CN202937638U CN202937638U CN201220651290.2U CN201220651290U CN202937638U CN 202937638 U CN202937638 U CN 202937638U CN 201220651290 U CN201220651290 U CN 201220651290U CN 202937638 U CN202937638 U CN 202937638U
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- rotor core
- stator disk
- stator
- edge face
- permanent magnet
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- 239000000725 suspension Substances 0.000 title claims abstract description 39
- 238000004804 winding Methods 0.000 claims abstract description 24
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000008041 oiling agent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004146 energy storage Methods 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
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to a permanent magnet offset type axial magnetic suspension bearing, which comprises a stator sleeve, a stator disc A, a stator disc B and a stator disc C, wherein the stator disc A, the stator disc B and the stator disc C are arranged on the inner side of the stator sleeve; the control winding A is arranged on the inner wall of the stator sleeve and is positioned between the stator disc A and the stator disc B, and the control winding B is positioned between the stator disc B and the stator disc C; the permanent magnet motor comprises a rotor core A arranged on a main shaft A and a rotor core B arranged on the main shaft B, wherein the rotor core A is positioned between a stator disc A and a stator disc B, the rotor core B is positioned between the stator disc B and a stator disc C, and a permanent magnet is arranged between the main shaft A and the main shaft B. The utility model discloses utilize the permanent magnet to establish bias magnetic field in the air gap, utilize the interact between stator disc and the rotor core to realize that the rotor has simple structure, small, numerous advantages such as light in weight, energy loss are few at the stable suspension of axial.
Description
Technical field
The utility model relates to a kind of magnetic suspension bearing, and specifically a kind of permanent magnet bias profile shaft, to magnetic suspension bearing, belongs to the magnetic levitation technology field.
Background technique
As far back as 1842, English physicist Earnshaw just was studied and discusses the magnetic suspension bearing technology, and the basic principle of magnetic suspension bearing technology is to utilize magnetic force between stator core and rotor 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 to move under hundreds thousand of operating modes that turn overcritical, per minute, its peripheral velocity only is subject to the restriction of rotating shaft material intensity.As a rule, in the situation that the 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, the product of bearing average diameter and main shaft limit speed, be about 2.5 ~ 3 * 10
6Mmr/min, the dn value of sliding bearing is about 0.8 ~ 2 * 10
6Mmr/min, the dn value of magnetic suspension bearing is about 4 ~ 6 * 10
6Mmr/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 in the machinery-free contact, so the life-span of magnetic suspension bearing and reliability are all far above traditional mechanical bearing.
4. without adding oiling agent.Owing to there not being mechanical friction between stator and rotor, do not need to add oiling agent during work, therefore the pollution problem that does not exist oiling agent to cause environment, ban use of oiling agent and forbidding the occasion of polluting, as occasions such as vacuum equipment, ultra-clean aseptic rooms, magnetic suspension bearing has unrivaled advantage.
Set up the difference of mode according to magnetic field, magnetic suspension bearing can be divided into permanent-magnet type, electromagnetism eccentrically arranged type and permanent magnet bias type three types.
The 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, set up controlling magnetic field by the control winding that passes into size and Orientation and all be subject to the alternating current controlled in real time in air gap, 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 the magnetic bias coil and produces required bias magnetic field, can reduce largely the energy loss of magnetic suspension bearing, along with the magnetic suspension bearing technology 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 characteristics of permanent magnet bias type magnetic suspension bearing make it in these fields, irreplaceable advantage be arranged, permanent magnet bias type magnetic suspension bearing technology also becomes an important directions of magnetic suspension bearing technical research and development.
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, and the permanent magnet bias profile shaft of less energy consumption is to magnetic suspension bearing.
The utility model comprises:
Stator sleeve, its inboard from left to right is respectively arranged with stator disk A, stator disk B, stator disk C;
Control winding A, be arranged on the inwall of stator sleeve, between stator disk A and stator disk B;
Control winding B, be arranged on the inwall of stator sleeve, between stator disk B and stator disk C;
Principal axis A, be equipped with rotor core A on it, rotor core A is between stator disk A and stator disk B;
Main shaft B, be equipped with rotor core B on it, rotor core B is between stator disk B and stator disk C;
Permanent magnet, be arranged between principal axis A and main shaft B.
Between said stator disk A interior edge face and principal axis A exterior edge face, between stator disk A right side and rotor core A left side, control between winding A interior edge face and rotor core A exterior edge face, between stator disk B interior edge face and permanent magnet exterior edge face, between stator disk B left side and rotor core A right side, between stator disk B right side and rotor core B left side, control between winding B interior edge face and rotor core B exterior edge face, between stator disk C interior edge face and main shaft B exterior edge face, all there is air gap between stator disk C left side and rotor core B right side.
Between stator disk A right side and rotor core A left side, between stator disk B left side and rotor core A right side, between stator disk B right side and rotor core B left side, between stator disk C left side and rotor core B right side, the effect of air gap is mainly that its width is 0.3 ~ 1.5mm preferably as the medium of magnetic field energy storage.
Between stator disk A interior edge face and principal axis A exterior edge face, control between winding A interior edge face and rotor core A exterior edge face, between stator disk B interior edge face and permanent magnet exterior edge face, between control winding B interior edge face and rotor core B exterior edge face, between stator disk C interior edge face and main shaft B exterior edge face, the effect of air gap is mainly to prevent that the associated components generation from contacting, its width is 1 ~ 3mm preferably.
Based on said structure, the contrast of axial magnetic suspension bearing of the present utility model and patent family with and advantage:
The utility model utilizes permanent magnet to set up bias magnetic field in air gap, utilizes the interaction between stator disk and rotor core to realize that rotor is at axial stable suspersion.Below provide the deficiency of several patent families:
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, its inside and outside axial stator magnetic pole ((4) and (1)) radius difference is larger, cause the leakage coefficient difference larger, be 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 shortcoming is with above-mentioned patent 1;
4, the permanent magnet biased axial magnetic suspension bearing that Chinese Patent Application No. 200910033316.X provides, between its rotor magnetic conductive iron 2 and stator magnetic conductive iron 3, in air gap, only exist bias magnetic field not have controlling magnetic field, so this part air gap can't produce controlled suspending power;
5, a kind of permanent magnet biased axial magnetic suspension bearing that Chinese Patent Application No. 200710025139.1 provides, between its magnetic guiding loop 3 and thrust disc 7, in air gap, only exist bias magnetic field not have controlling magnetic field, so this part air gap can't produce controlled suspending power;
6, a kind of novel permanent magnetic eccentrically arranged type axial magnetic suspension bearing that Chinese Patent Application No. 201120216533.5 provides, its structure of this patent of comparing is more complicated, and volume is larger, and energy consumption is larger.
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.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Label title in Fig. 1: 1, stator disk A.2, stator sleeve.3, stator disk B.4, stator disk C.5, permanent magnet.6, main shaft B.7, rotor core B.8, control winding B.9, control winding A.10, rotor core A.11, principal axis A.
Embodiment
As shown in Figure 1, stator disk A1, stator disk B3, stator disk C4 from left to right are arranged on stator sleeve 2 inside successively.Control winding A9 and be fixed on stator sleeve 2 inside left, between stator disk A1 and stator disk B3; Control winding B9 and be fixed on stator sleeve 2 inner right side, between stator disk B3 and stator disk C4.
Permanent magnet 5 is between principal axis A 11 and main shaft B6, and permanent magnet 5 left sides contact with principal axis A 11 right sides, and permanent magnet 5 right sides contact with main shaft B6 left side.
Rotor core A10 is sleeved on principal axis A 11 outsides, rotor core B7 is sleeved on main shaft B6 outside, and its interior edge face contacts with the exterior edge face of principal axis A 11, main shaft B6 respectively.Rotor core A10 is between stator disk A1 and stator disk B3, and rotor core B7 is between stator disk B3 and stator disk C4.
Between stator disk A1 interior edge face and principal axis A 11 exterior edge faces, between stator disk A1 right side and rotor core A10 left side, control between winding A9 interior edge face and rotor core A10 exterior edge face, between stator disk B3 interior edge face and permanent magnet 5 exterior edge faces, between stator disk B3 left side and rotor core A10 right side, between stator disk B3 right side and rotor core B7 left side, between control winding B8 interior edge face and rotor core B7 exterior edge face, stator disk C4 interior edge face and
Between main shaft B6 exterior edge face, between stator disk C4 left side and rotor core B7 right side, all have air gap.
The utility model utilizes in the air gap of permanent magnet 5 between stator disk A1 right side and rotor core A10 left side, between stator disk B3 left side and rotor core A10 right side, between stator disk B3 right side and rotor core B7 left side, between stator disk C4 left side and rotor core B7 right side and sets up bias magnetic field; Utilize to control in the air gap of winding A9 between stator disk A1 right side and rotor core A10 left side, between stator disk B3 left side and rotor core A10 right side and set up controlling magnetic field; Utilize to control in the air gap of winding B8 between stator disk B3 right side and rotor core B7 left side, between stator disk C4 left side and rotor core B7 right side and set up controlling magnetic field; Utilize the interaction between stator disk A1, stator disk B3 and rotor core A10, the interaction between stator disk B3, stator disk C4 and rotor core B7 realizes that the active of rotor axial degrees of freedom suspends.
Claims (4)
1. a permanent magnet bias profile shaft, to magnetic suspension bearing, is characterized in that comprising:
Stator sleeve (2), from left to right be respectively arranged with stator disk A(1 in it), stator disk B(3), stator disk C(4);
Control winding A(9), be arranged on the inwall of stator sleeve (2), be positioned at stator disk A(1) and stator disk B(3) between;
Control winding B(8), be arranged on the inwall of stator sleeve (2), be positioned at stator disk B(3) and stator disk C(4) between;
Principal axis A (11), be equipped with rotor core A(10 on it), rotor core A(10) be positioned at stator disk A(1) and stator disk B(3) between;
Main shaft B(6), rotor core B(7 is installed on it), rotor core B(7) be positioned at stator disk B(3) and stator disk C(4) between;
Permanent magnet (5), be arranged on principal axis A (11) and main shaft B(6) between.
2. permanent magnet bias profile shaft as claimed in claim 1 is to magnetic suspension bearing, it is characterized in that: stator disk A(1) between interior edge face and principal axis A (11) exterior edge face, stator disk A(1) right side and rotor core A(10) between left side, control winding A(9) interior edge face and rotor core A(10) between exterior edge face, stator disk B(3) between interior edge face and permanent magnet (5) exterior edge face, stator disk B(3) left side and rotor core A(10) between right side, stator disk B(3) right side and rotor core B(7) between left side, control winding B(8) interior edge face and rotor core B(7) between exterior edge face, stator disk C(5) interior edge face and main shaft B(6) between exterior edge face, stator disk C(4) left side and rotor core B(7) all leave air gap between right side.
3. permanent magnet bias profile shaft as claimed in claim 2, to magnetic suspension bearing, is characterized in that: stator disk A(1) right side and rotor core A(10) between left side, stator disk B(3) left side and rotor core A(10) between right side, stator disk B(3) right side and rotor core B(7) between left side, stator disk C(4) left side and rotor core B(7) between right side the width of air gap between 0.3～1.5mm.
4. permanent magnet bias profile shaft as claimed in claim 2, to magnetic suspension bearing, is characterized in that: stator disk A(1) between interior edge face and principal axis A (11) exterior edge face, control winding A(9) between interior edge face and rotor core A (10) exterior edge face, stator disk B(3) between interior edge face and permanent magnet (5) exterior edge face, control winding B(8) interior edge face and rotor core B(7) between exterior edge face, stator disk C(4) interior edge face and main shaft B(6) between exterior edge face the width of air gap between 1 ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220651290.2U CN202937638U (en) | 2012-11-30 | 2012-11-30 | Permanent magnet bias type axial magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220651290.2U CN202937638U (en) | 2012-11-30 | 2012-11-30 | Permanent magnet bias type axial magnetic suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937638U true CN202937638U (en) | 2013-05-15 |
Family
ID=48321879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220651290.2U Expired - Fee Related CN202937638U (en) | 2012-11-30 | 2012-11-30 | Permanent magnet bias type axial magnetic suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937638U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927128A (en) * | 2012-11-30 | 2013-02-13 | 南京工业大学 | Permanent magnet bias type axial magnetic suspension bearing |
| CN103818695A (en) * | 2014-03-19 | 2014-05-28 | 安徽理工大学 | Magnetic suspension carrier roller for coal mine transportation |
| CN108087425A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of servomotor magnetic thrust bearing |
-
2012
- 2012-11-30 CN CN201220651290.2U patent/CN202937638U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927128A (en) * | 2012-11-30 | 2013-02-13 | 南京工业大学 | Permanent magnet bias type axial magnetic suspension bearing |
| CN103818695A (en) * | 2014-03-19 | 2014-05-28 | 安徽理工大学 | Magnetic suspension carrier roller for coal mine transportation |
| CN108087425A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of servomotor magnetic thrust bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20131130 |