CN106411100B - A kind of coaxial magnetic wheel gear with static excitation ring - Google Patents
A kind of coaxial magnetic wheel gear with static excitation ring Download PDFInfo
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- CN106411100B CN106411100B CN201610969233.1A CN201610969233A CN106411100B CN 106411100 B CN106411100 B CN 106411100B CN 201610969233 A CN201610969233 A CN 201610969233A CN 106411100 B CN106411100 B CN 106411100B
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- speed rotor
- ring
- permanent magnet
- excitation
- static excitation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/106—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with a radial air gap
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
A kind of coaxial magnetic wheel gear with static excitation ring including the low speed rotor, static excitation ring and high speed rotor being coaxially disposed from outside to inside, and is equipped with air gap each other；The inner edge annular of the low speed rotor is provided with salient-pole structure；The peripheral annual of the high speed rotor is provided with salient-pole structure；The static excitation ring is the ring structure that iron core and permanent magnet are spaced each other composition.Coaxial magnetic wheel gear of the present invention, structural stability is good, and Mechanical Reliability is high.Permanent magnet is located on static excitation ring, without rotating with rotor, the stability of permanent magnet fixed fixing and excitation has been effectively ensured, while being easy to the realization of other excitation modes, such as electrical excitation or superconduction excitation.In conclusion the mentioned coaxial magnetic wheel gear of the present invention can obtain ideal Mechanical Reliability and operation stability, while it being able to maintain higher torque transfer capability again.
Description
Technical field
The present invention relates to a kind of coaxial magnetic wheel gears with static excitation ring, belong to gear technical field.
Background technique
Magnetic gear acts on the transmitting for carrying out torque using magnetic field coupling, is a kind of Non-contact speed-changing transmission device, no
The problems such as there are noise, vibration, friction loss and lubrications, and can be realized the physical isolation between input and output, also
Has overload self-shield ability, security reliability is higher.In recent years, novel with the development of high-performance Ne-Fe-B permanent-magnet material
The research of magnetic gear topological structure is receive more and more attention.
Torque transfer capability and transmission stability are two important indicators for evaluating magnetic gear performance, are turned compared to tradition
It remodels magnetic gear, it is mesh that magnetic gear torque transfer capability with higher is modulated in the field based on the work of magnetic field modulation principle
The research hotspot of preceding Non-contact speed-changing transmission field.Field modulation magnetic gear is generally by high speed rotor, low speed rotor and adjustable magnetic
Ring is constituted.
The permanent magnet of traditional field modulation magnetic gear is mounted on high, low speed rotor, when rotor is in high speed rotation
State or when by larger torque, it may occur that the phenomenon that rotor permanent magnet falls off greatly reduces Mechanical Reliability.
A kind of coaxial magnetic gear disclosed in Chinese invention patent ZL201110252784.3, although the permanent magnet of low speed rotor is moved to quiet
Static magnet ring is formed on adjustable magnetic ring only, so that low speed rotor is only the salient-pole structure being made of iron core, improves low speed rotor
Mechanical Reliability, but high speed rotor is still made of iron core and Surface Mount permanent magnet, and when high speed rotor high speed rotation is easy to happen
The phenomenon that permanent magnet falls off, so as to cause gear failure, overall structure reliability is still lower.If in addition, rotor-exciting structure
Permanent magnet excitation is replaced using electrical excitation or superconduction excitation, is needed using slip ring and brush, this will will increase magnetic gear design
With the complexity of production assembly, integrally-built reliability but will be substantially reduced.According to static excitation, then it is convenient to realize
Electrical excitation or superconduction excitation replace permanent magnet excitation, the complexity without will increase structure.Therefore, higher mechanical reliable to having
Property, static excitation type magnetic gear topological structure research have important theory significance and engineering practical value.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of coaxial magnetic wheel gear with static excitation ring.
The present invention is able to solve that high, low speed rotor Mechanical Reliability existing for existing field modulation magnetic gear is low, and operation is steady
The problem of qualitative difference, rotor-exciting is not easy to using electrical excitation or superconduction excitation.
Technical scheme is as follows:
A kind of coaxial magnetic wheel gear with static excitation ring, including the low speed rotor, static being coaxially disposed from outside to inside
Excitation ring and high speed rotor, and it is equipped with air gap each other；The inner edge annular of the low speed rotor is provided with salient-pole structure；It is described
The peripheral annual of high speed rotor is provided with salient-pole structure；The static excitation ring is the ring that iron core and permanent magnet are spaced each other composition
Shape structure.In the present invention, permanent magnet is not present by being made of single soft magnetic materials in the high speed rotor, low speed rotor.Its
In, the soft magnetic materials refers to that typical soft magnetic materials can be with most when magnetization occurs to be not more than the material of 1000A/m in Hc
Small external magnetic field realizes the maximum intensity of magnetization.Soft magnetic materials is easy to magnetize, and is also easy to demagnetize, is widely used in electrical equipment and electricity
In sub- equipment.
It is preferred according to the present invention, the permanent magnet of the static excitation ring along the ring structure circumference cutting orientation magnetizing,
And the magnetizing direction of adjacent permanent magnet is opposite.This technical solution forms effective N-S magnetic pole,
Excitation is provided for entire magnetic gear.
Preferred according to the present invention, salient pole number is N in the salient-pole structure of the low speed rotor1, the static excitation ring
The number of pole-pairs of middle permanent magnet is Ps, high speed rotor salient-pole structure in salient pole number be NhMeet following relationship:
N1-Ps=Nh+Ps；
The variator drive ratio G of realizationrAre as follows: Gr=N1:Nh。
Beneficial effects of the present invention are as follows:
1. in coaxial magnetic wheel gear of the invention, high, low speed rotor is the annular salient pole made of single soft magnetic materials
Permanent magnet is not present in structure thereon, and structural stability is good, and Mechanical Reliability is high；
2. in coaxial magnetic wheel gear of the invention, permanent magnet is located on static excitation ring, without being rotated with rotor, effectively protect
The stability of permanent magnet fixed fixing and excitation has been demonstrate,proved, while being easy to replace permanent magnet excitation using other excitation modes, such as
Electrical excitation or superconduction excitation etc..The present invention can obtain ideal Mechanical Reliability and operation stability.
Detailed description of the invention
Fig. 1 is coaxial magnetic wheel gear cross section structure figure of the invention；
In Fig. 1: 1, low speed rotor；11, the iron core ring of low speed rotor；12, the salient pole of low speed rotor；2, static excitation ring；
21, the iron core of static excitation ring；22, the permanent magnet of static excitation ring；3, high speed rotor；31, the iron core ring of high speed rotor；32,
The salient pole of high speed rotor；4, the air gap between low speed rotor and static excitation ring；5, between high speed rotor and static excitation ring
Air gap.Arrow represents the magnetizing direction of permanent magnet in figure.
Specific embodiment
The present invention is described in detail below with reference to embodiment and Figure of description, but not limited to this.It is recorded below
Embodiment be only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to guarantor of the present invention
The range of shield.
Embodiment,
A kind of coaxial magnetic wheel gear with static excitation ring, including the low speed rotor 1, static being coaxially disposed from outside to inside
Excitation ring 2 and high speed rotor 3, and it is equipped with air gap each other；The inner edge annular of the low speed rotor 1 is provided with salient-pole structure
12；The peripheral annual of the high speed rotor 3 is provided with salient-pole structure 32；The static excitation ring 2 is iron core 21 and permanent magnet 22
It is spaced each other the ring structure of composition.
Circumference cutting orientation magnetizing of the permanent magnet 22 of the static excitation ring 2 along the ring structure, and adjacent permanent magnet 22
Magnetizing direction it is opposite.This technical solution forms effective N-S magnetic pole, provides excitation for entire magnetic gear.
Salient pole number is N in the salient-pole structure 12 of the low speed rotor 1l, in the static excitation ring 2 permanent magnet 22 pole
Logarithm is Ps, high speed rotor salient-pole structure 32 in salient pole number be NhMeet following relationship:
N1-Ps=Nh+Ps；
The variator drive ratio G of realizationrAre as follows: Gr=N1:Nh。
The low speed rotor axial length is L1, the static excitation ring axial length be Ls, high speed rotor axial direction length be
LhBetween meet following relationship:
L1=Ls=Lh。
1 the present invention will be further described with reference to the accompanying drawing.
Low speed rotor 1 and high speed rotor 3 of the present invention are all the annular salient-pole structure made of single soft magnetic materials,
Permanent magnet is not present thereon, structural stability is good, and Mechanical Reliability is high.
The present invention provides the permanent magnet of excitation, i.e. the permanent magnet 22 of static excitation ring is located on static excitation ring 2, be not necessarily to
Rotor rotation, has been effectively ensured the stability of permanent magnet fixed fixing and excitation, while being easy to using other excitation modes
Instead of permanent magnet excitation, such as electrical excitation or superconduction excitation, as long as it can ensure that generating effective N-S magnetic pole, but no matter adopt
With which kind of structure type, all within protection scope of the present invention.
The low speed rotor 1, static excitation ring 2 and high speed rotor 3 from outside to inside, it is concentric arrangement and axial length phase
Together.
Air gap 4, static excitation ring 2 and high speed rotor are equipped between the static excitation ring 2 and the inner surface of low speed rotor 1
Air gap 5 is equipped between 3 outer surface, so as to guarantee that high, low speed rotor normally rotates.
The low speed rotor 1, the iron core 21 of static excitation ring, high speed rotor 3 are by silicon steel laminations or other soft magnetic materials structures
At identical as the stator-rotor iron core manufacturing process of common permanent magnet synchronous motor.
The permanent magnet 22 of the static excitation ring is made of rare-earth Nd-Fe-B or other permanent-magnet materials, is circumferentially tangentially filled
Magnetic, and adjacent permanent magnet magnetizing direction provides excitation for whole device on the contrary, form effective N-S magnetic pole.
The magnetic field modulation function of the salient pole 12 (salient pole 32 of high speed rotor) of low speed rotor, can be by static excitation ring forever
The magnetic field that magnet 22 generates generates a series of space harmonics magnetic fields in (air gap 5) internal modulation of air gap 4, deposits when in air gap 4 and air gap 5
It in the equal harmonic field of number of pole-pairs, is acted on by magnetic field coupling, which can be realized as stable torque
Transmission.In order to realize the effect of gear, must be requested that the number of the high, low speed rotor with salient pole of mentioned coaxial magnetic wheel gear is not
It is identical.At this point, when the difference of the number of pole-pairs of the permanent magnet 22 of the number and static excitation ring of the salient pole 12 of low speed rotor is equal to high speed
When the sum of the number of pole-pairs of the permanent magnet 22 of the number and static excitation ring of the salient pole 32 of rotor, the harmonic wave of amplitude maximum can be utilized
Realize optimal torque transfer capability in magnetic field.The number N of the salient pole 12 of coaxial magnetic wheel gear low speed rotor i.e. of the present invention1、
The number of pole-pairs P of the permanent magnet 22 of static excitation rings, high speed rotor salient pole 32 number NhFollowing relationship should be met:
N1-Ps=Nh+Ps (1)
At this point, accordingly, the variator drive ratio G which can be realizedrAre as follows:
Gr=N1:Nh (2)
12 numbers of salient pole for the coaxial magnetic wheel gear low speed rotor that Fig. 1 example provides are 25, the permanent magnet of static excitation ring
22 number of pole-pairs is 9, and 32 numbers of salient pole of high speed rotor are 7, fully meets above-mentioned expression formula (1), at this time the coaxial magnetic tooth
The variator drive ratio that taking turns can be realized is 25:7.
In coaxial magnetic wheel gear of the present invention, high, low speed rotor is the convex annular made of single soft magnetic materials
Permanent magnet is not present in pole structure thereon, and structural stability is good, and Mechanical Reliability is high.Permanent magnet is located on static excitation ring, is not necessarily to
It is rotated with rotor, the stability of permanent magnet fixed fixing and excitation has been effectively ensured, while being easy to other excitation modes
It realizes, such as electrical excitation or superconduction excitation.In conclusion the mentioned coaxial magnetic wheel gear of the present invention can obtain ideal machinery can
By property and operation stability, while it being able to maintain higher torque transfer capability again.
Claims (3)
1. a kind of coaxial magnetic wheel gear with static excitation ring, which is characterized in that the coaxial magnetic wheel gear includes by outside extremely
Low speed rotor, static excitation ring and the high speed rotor of interior coaxial arrangement, and be equipped with air gap each other, in the low speed rotor and
There are air gaps between static excitation ring, and there are air gaps between the static excitation ring and high speed rotor；The low speed rotor it is interior
Edge annular is provided with salient-pole structure；The peripheral annual of the high speed rotor is provided with salient-pole structure；The static excitation ring is iron
Core and permanent magnet are spaced each other the ring structure of composition.
2. a kind of coaxial magnetic wheel gear with static excitation ring according to claim 1, which is characterized in that described static
The permanent magnet of excitation ring is along the circumference cutting orientation magnetizing of the ring structure, and the magnetizing direction of adjacent permanent magnet is opposite.
3. a kind of coaxial magnetic wheel gear with static excitation ring according to claim 1, which is characterized in that the low speed
Salient pole number is N in the salient-pole structure of rotorl, the number of pole-pairs of permanent magnet is P in the static excitation rings, high speed rotor salient pole
Salient pole number is N in structurehMeet following relationship:
Nl-Ps=Nh+Ps；
The variator drive ratio G of realizationrAre as follows: Gr=Nl:Nh。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969233.1A CN106411100B (en) | 2016-10-28 | 2016-10-28 | A kind of coaxial magnetic wheel gear with static excitation ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969233.1A CN106411100B (en) | 2016-10-28 | 2016-10-28 | A kind of coaxial magnetic wheel gear with static excitation ring |
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| Publication Number | Publication Date |
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| CN106411100A CN106411100A (en) | 2017-02-15 |
| CN106411100B true CN106411100B (en) | 2019-05-10 |
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| CN201610969233.1A Active CN106411100B (en) | 2016-10-28 | 2016-10-28 | A kind of coaxial magnetic wheel gear with static excitation ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109525094A (en) * | 2018-12-24 | 2019-03-26 | 上海鑫国动力科技有限公司 | A kind of step-by-step movement magnetic gear |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN103997174A (en) * | 2014-06-11 | 2014-08-20 | 东南大学 | Rotor salient pole type hybrid excitation motor based on magnetic gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8528686B2 (en) * | 2008-12-12 | 2013-09-10 | Steering Solutions Ip Holding Corporation | Methods and systems involving electromagnetic torsion bars |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324821A (en) * | 2011-08-30 | 2012-01-18 | 东南大学 | Coaxial magnetic gear |
| CN103997174A (en) * | 2014-06-11 | 2014-08-20 | 东南大学 | Rotor salient pole type hybrid excitation motor based on magnetic gear |
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