CN104682660B - A kind of axial magnetic field modulation system magnetic gear - Google Patents
A kind of axial magnetic field modulation system magnetic gear Download PDFInfo
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- CN104682660B CN104682660B CN201510077346.6A CN201510077346A CN104682660B CN 104682660 B CN104682660 B CN 104682660B CN 201510077346 A CN201510077346 A CN 201510077346A CN 104682660 B CN104682660 B CN 104682660B
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Abstract
The present invention discloses a kind of axial magnetic field modulation system magnetic gear, and an adjustable magnetic ring concentric with inner and outer Rotator is respectively set at the axial two ends of inner and outer Rotator, and two adjustable magnetic rings are respectively fixedly connected on magnetic gear both sides end cap inner side；Internal rotor is by the set of permanent magnets of 2M blocks first into M=1,2,3 ..., 2M the first permanent magnet of block are along the circumferential direction brought into close contact and form ring-type together successively.The polarity of all of equal axial charging of first permanent magnet and two neighboring first permanent magnet is different；Outer rotor is by the set of permanent magnets of 2N blocks second into N=1,2,3 ..., 2N the second permanent magnet of block are along the circumferential direction brought into close contact and form ring-type together successively, and the polarity of all of equal axial charging of second permanent magnet and two adjacent permanent magnets is different；The present invention forms the axial magnetic circuit between axial both sides adjustable magnetic ring and inner and outer Rotator permanent magnet, saves the iron core on rotor, has saved permeability magnetic material, effectively reduces rotor weight, improves the dynamic property of magnetic gear.
Description
Technical field
The present invention relates to power transmission device manufacture field, and in particular to a kind of magnetic field modulation magnetic gear.
Background technology
Magnetic gear be using magnetic coupling force it is attracting repel each other reach the driving member of transmission purpose, referred to as magnetic gear is only
It is that structure is similar with conventional gears, it is consistent to be driven purpose, conventional gears is not subordinate to substantially.
The magnetic field modulation magnetic gear of existing structure is made up of three parts：Internal rotor, adjustable magnetic ring and outer rotor.Wherein,
Adjustable magnetic ring is arranged between inside and outside two-layer rotor, and internal rotor includes internal rotor iron core and internal rotor permanent-magnetic body, and outer rotor includes outer
Rotor core and outer rotor permanent magnet, permanent magnet are arranged on the outer surface of internal rotor and the inner surface of outer rotor.On inner and outer Rotator
Permanent magnet use radial magnetizing, and radial magnetic field is formed in magnetic circuit.The defect that this magnetic gear occurs is：Inside and outside turn
The magnetic circuit as permanent magnetic field unshakable in one's determination is inevitably provided with son, manufacturing cost and rotor weight is increased, dynamic is reduced
Performance；And adjustable magnetic ring is arranged between inside and outside two-layer rotor, formed rotation outer rotor from outside to inside, static adjustable magnetic ring and
The labyrinth of the rotation modular construction of internal rotor three and two-layer air gap, manufacture is difficult.
The content of the invention
The purpose of the present invention is the weak point to overcome existing magnetic field modulation magnetic gear to exist, there is provided one kind is used
Axial charging, and the axial magnetic field modulation system magnetic gear of axial magnetic field is formed in magnetic circuit, simple structure, easily manufacture, cost
Low and dynamic property stabilization.
The technical solution adopted by the present invention is：The present invention includes internal rotor and outer rotor, and outer rotor coaxial sleeve is in internal rotor
Outward, outer rotor is consistent with the axial length of internal rotor, and axial two ends flush, is respectively set at the axial two ends of inner and outer Rotator
One adjustable magnetic ring concentric with inner and outer Rotator, axial gas is respectively left between two adjustable magnetic rings and the axial two ends of inner and outer Rotator
Gap, two adjustable magnetic rings are respectively fixedly connected on magnetic gear both sides end cap inner side；Internal rotor is by the set of permanent magnets of 2M blocks first into M=
The permanent magnet of 1,2,3 ..., 2M block first is along the circumferential direction brought into close contact and forms ring-type together successively.All of first permanent magnet
The polarity of equal axial charging and two neighboring first permanent magnet is different；Outer rotor by the set of permanent magnets of 2N blocks second into, N=1,2,
The permanent magnet of 3 ..., 2N block second is along the circumferential direction brought into close contact and forms ring-type together successively, all of equal axle of second permanent magnet
To magnetizing and the polarity of two adjacent permanent magnets is different.
The present invention can set adjustable magnetic ring in axial one end of inner and outer Rotator, and the other end is not provided with adjustable magnetic ring, and the other end is interior
Rotor core and outer rotor are unshakable in one's determination.
Adjustable magnetic ring is along the circumferential direction staggered and is brought into close contact and formed ring by M+N blocks iron core block and non-magnetic piece of M+N blocks
Shape.
Compared with existing magnetic field modulation magnetic gear, it is an advantage of the invention that：
1st, the present invention has made the permanent magnet of radial magnetizing in the inner and outer Rotator of existing magnetic field modulation magnetic gear into axle
To magnetizing, the axial magnetic circuit between axial both sides adjustable magnetic ring and inner and outer Rotator permanent magnet is formed, this structure can be saved existing
The iron core on rotor in radial magnetic field modulation system magnetic gear, has saved permeability magnetic material, effectively reduces rotor weight, improves
The dynamic property of magnetic gear.
2nd, the adjustable magnetic ring being located between inner and outer Rotator in existing magnetic field modulation magnetic gear has been made into be mounted in by the present invention
The axial two ends of inner and outer Rotator, it is possible to combined together with magnetic gear axial end cap, with existing magnetism-regulating type magnetic gear by outer
Rotation outer rotor, static adjustable magnetic ring in are compared with the three-decker of rotation internal rotor, axial magnetic field modulation system magnetic of the present invention
Property gear it is easier for installation, it is easy to accomplish, be easy to ensure quality.
Brief description of the drawings
Fig. 1 is a kind of radial structure schematic diagram of axial magnetic field modulation system magnetic gear of the invention；
Fig. 2 is the block unshakable in one's determination and non-magnetic piece of arrangement schematic diagram of adjustable magnetic ring in Fig. 1；
Fig. 3 is the left view structural representation of Fig. 1；
Fig. 4 is the radial structure schematic diagram of internal rotor and outer rotor in Fig. 1；
Fig. 5 is field circuit schematic diagram of the present invention；
Fig. 6 is radial structure schematic diagram of the present invention when adjustable magnetic ring is installed in one side；
Fig. 7 is the right view of structure shown in Fig. 6.
In figure：1. internal rotor；2. outer rotor；3. adjustable magnetic ring；3-1. iron core blocks；Non-magnetic piece of 3-2.；4. adjustable magnetic ring；4-1.
Block unshakable in one's determination；Non-magnetic piece of 4-2.；5th, 6. axial air-gap；7. radial air gap；8. internal rotor is unshakable in one's determination；9. outer rotor is unshakable in one's determination.
Specific embodiment
Referring to Fig. 1,2,3,4, the present invention is made up of internal rotor 1, outer rotor 2 and two adjustable magnetic rings 3,4, wherein, turn outward
Sub 2 coaxial sleeves leave radial air gap 7 outside internal rotor 1, and between outer rotor 2 and internal rotor 1, and radial air gap 7 is set to
4mm.Outer rotor 2 is consistent with the axial length of internal rotor 1, and axial two ends flush.In outer rotor 2 and the axial direction of internal rotor 1
Two ends respectively set an adjustable magnetic ring, are respectively adjustable magnetic ring 3 and adjustable magnetic ring 4.Adjustable magnetic ring 3,4 is concentric with outer rotor 2 and internal rotor 1
Install, axial air-gap is left between adjustable magnetic ring 3, adjustable magnetic ring 4 and outer rotor 2 and the axial two ends of internal rotor 1, be respectively：Adjustable magnetic
Leave axial air-gap 5 between ring 3 and outer rotor 2 and axial one end of internal rotor 1, adjustable magnetic ring 4 and outer rotor 2 and internal rotor 1
Axial air-gap 6 is left between the axial other end.Axial air-gap 5 and axial air-gap 6 are equal, are both configured to 0.5mm.Axial air-gap 5
Working gas gap is with axial air-gap 6, axial air-gap 5 and axial air-gap 6 are smaller, the torque of gear transmission of the present invention is bigger,
Internal rotor 1 is by 2M blocks set of permanent magnets into the first permanent magnet of M=1,2,3 ..., 2M block is along the circumferential direction closely pasted successively
It is combined to form ring-type.The all of equal axial charging of first permanent magnet, and the polarity of two neighboring first permanent magnet is different.Outward
Rotor 2 is by the set of permanent magnets of 2N blocks second into N=1,2,3 ..., 2N the second permanent magnet of block are along the circumferential direction fitted tightly over one successively
Rise and form ring-type, all of equal axial charging of second permanent magnet, and the polarity of two neighboring all of permanent magnet is different.Internal rotor
1 and the equal non iron-core magnetic circuit of outer rotor 2.Adjustable magnetic ring 3 is by first non-magnetic piece of 3-2 edge of iron core block 3-1 and the M+N block of M+N blocks first
Circumferencial direction is staggered, and the first iron core block 3-1 and first non-magnetic piece of 3-2 are brought into close contact together, form ring-type.Adjustable magnetic ring
4 are along the circumferential direction staggered by second non-magnetic piece of 4-2 of iron core block 4-1 and the M+N block of M+N blocks second, the second block 4-1 unshakable in one's determination
Ring-type is formed together with being brought into close contact with non-magnetic piece of 4-2 of the 2nd M+N blocks.The external diameter of adjustable magnetic ring 3 and adjustable magnetic ring 4 is more than or equal to
Internal diameter of the internal diameter of the external diameter of outer rotor 2, adjustable magnetic ring 3 and adjustable magnetic ring 4 less than or equal to internal rotor 1.Adjustable magnetic ring 3 and adjustable magnetic ring 4
The corresponding end cap inner side of magnetic gear both sides is directly fixedly mounted on, the both sides end cap with magnetic gear is integrally formed.Such as Fig. 3, this hair
It is bright that three stage structure is constituted by adjustable magnetic ring 3, internal rotor 1 and outer rotor 2, adjustable magnetic ring 4 in the axial direction.
It is the non-magnet material block such as epoxy resin that first non-magnetic piece of 3-2 and second non-magnetic piece of 4-2 are, first is unshakable in one's determination
The material of the block 4-1 unshakable in one's determination of block 3-1 and second can be silicon steel sheet, or monoblock electrical sheet, internal rotor 1 and outer rotor 2
Material is neodymium iron boron etc..
Referring to Fig. 5, the first permanent magnet of magnetic field axial charging from internal rotor 1 enters adjustable magnetic by axial air-gap 5
Ring 3, then enter the second permanent magnet of axial charging in outer rotor 2 by axial air-gap 5 by adjustable magnetic ring 3, then by axial gas
Gap 6 enters adjustable magnetic ring 4, then by adjustable magnetic ring 4 returns to the first permanent magnet of internal rotor 1 by axial air-gap 6, forms one completely
Field circuit.
During present invention work, adjustable magnetic ring 3 and adjustable magnetic ring 4 are maintained static, and are used to the permanent magnet in internal rotor 1, outer rotor 2
Produced magnetic field is modulated, and is run with realizing the speed change of internal rotor 1 and outer rotor 2, becoming torque.Internal rotor 1 and outer rotor 2
The steady biography of gear torque is realized by being interacted in air gap after the modulation of adjustable magnetic ring 3 and adjustable magnetic ring 4 in the magnetic field of generation
Pass.
Referring to Fig. 6 and Fig. 7, the present invention only can set adjustable magnetic ring when implementing in one end of gear, for example, set adjustable magnetic
Axial air-gap 5 is left between ring 3, adjustable magnetic ring 3 and internal rotor 1 and axial one end of outer rotor 2.The other end is not provided with adjustable magnetic ring,
The other end for being not provided with adjustable magnetic ring is internal rotor unshakable in one's determination 8 and outer rotor iron core 9.Internal rotor permanent-magnetic body is arranged on internal rotor iron core 8
On axial direction, outer rotor permanent magnet is arranged on 9 axial directions of outer rotor iron core.Wherein, one end set adjustable magnetic ring internal diameter be less than or
External diameter of the external diameter of the adjustable magnetic ring set equal to the internal diameter of internal rotor 1, one end more than or equal to outer rotor 2；Internal rotor iron core 8
Internal diameter and external diameter are equal to the internal diameter and external diameter of internal rotor 1, the internal diameter and external diameter of outer rotor iron core 9 be equal to outer rotor 2 internal diameter and
External diameter, adjustable magnetic ring is fixedly connected on the end cap inner side of magnetic gear one end.Other compositions and connected mode are respectively set with gear two ends
The structure of one adjustable magnetic ring is identical.
Claims (3)
1. a kind of axial magnetic field modulation system magnetic gear, including internal rotor（1）And outer rotor（2）, outer rotor（2）Including coaxial sleeve
Rotor（1）Outward, it is characterized in that：Inner and outer Rotator（1、2）Axial length it is consistent, and axial two ends flush, in inner and outer Rotator
（1、2）Axial two ends respectively set one and inner and outer Rotator（1、2）Concentric adjustable magnetic ring, two adjustable magnetic rings and inner and outer Rotator
（1、2）Axial two ends between respectively leave axial air-gap, two adjustable magnetic rings are respectively fixedly connected in the end cap of magnetic gear both sides
Side；Internal rotor（1）By the set of permanent magnets of 2M blocks first into M=1,2,3 ..., 2M the first permanent magnet of block are along the circumferential direction tight successively
Fit together to form ring-type；The polarity of all of equal axial charging of first permanent magnet and two neighboring first permanent magnet is different；
Outer rotor（2）By the set of permanent magnets of 2N blocks second into N=1,2,3 ..., 2N the second permanent magnet of block are along the circumferential direction brought into close contact successively
Form ring-type together, the polarity of all of equal axial charging of second permanent magnet and two adjacent permanent magnets is different, the adjustable magnetic
Ring is along the circumferential direction staggered and is brought into close contact and formed ring-type by M+N blocks iron core block and non-magnetic piece of M+N blocks.
2. axial magnetic field modulation system magnetic gear according to claim 1, it is characterized in that：The external diameter of adjustable magnetic ring is more than or equal to
The external diameter of outer rotor 2, the internal diameter of the internal diameter less than or equal to internal rotor 1 of adjustable magnetic ring.
3. axial magnetic field modulation system magnetic gear according to claim 1, it is characterized in that：The axial air-gap is 0.5mm, outward
The radial air gap of 4mm is left between rotor 2 and internal rotor 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077346.6A CN104682660B (en) | 2015-02-13 | 2015-02-13 | A kind of axial magnetic field modulation system magnetic gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510077346.6A CN104682660B (en) | 2015-02-13 | 2015-02-13 | A kind of axial magnetic field modulation system magnetic gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104682660A CN104682660A (en) | 2015-06-03 |
| CN104682660B true CN104682660B (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510077346.6A Expired - Fee Related CN104682660B (en) | 2015-02-13 | 2015-02-13 | A kind of axial magnetic field modulation system magnetic gear |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300886B (en) * | 2016-09-12 | 2019-02-05 | 江苏大学 | A kind of novel axial magnetic field modulation system magnetic gear |
| CN109768684B (en) * | 2019-03-04 | 2020-08-11 | 哈尔滨工业大学 | Radial parallel double-stator multiphase permanent magnet fault-tolerant motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082486A (en) * | 2010-12-20 | 2011-06-01 | 中国科学院深圳先进技术研究院 | Magnetic gear excited by three-side permanent magnet |
| CN202203361U (en) * | 2011-08-18 | 2012-04-25 | 东南大学 | Outer rotor magnetism-gathering magnetic gear |
| CN203627713U (en) * | 2014-01-03 | 2014-06-04 | 哈尔滨理工大学 | Magnetic field modulation type permanent magnet gear |
| CN104158362A (en) * | 2014-09-05 | 2014-11-19 | 东南大学 | Non-coaxial disc-type magnetic gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201210240D0 (en) * | 2012-06-11 | 2012-07-25 | Magnomatics Ltd | Improved pole-piece structure |
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2015
- 2015-02-13 CN CN201510077346.6A patent/CN104682660B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082486A (en) * | 2010-12-20 | 2011-06-01 | 中国科学院深圳先进技术研究院 | Magnetic gear excited by three-side permanent magnet |
| CN202203361U (en) * | 2011-08-18 | 2012-04-25 | 东南大学 | Outer rotor magnetism-gathering magnetic gear |
| CN203627713U (en) * | 2014-01-03 | 2014-06-04 | 哈尔滨理工大学 | Magnetic field modulation type permanent magnet gear |
| CN104158362A (en) * | 2014-09-05 | 2014-11-19 | 东南大学 | Non-coaxial disc-type magnetic gear |
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| CN104682660A (en) | 2015-06-03 |
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Granted publication date: 20170627 Termination date: 20200213 |