CN102447376A - Magnetic gear and magnetic transmission device - Google Patents

Magnetic gear and magnetic transmission device Download PDF

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Publication number
CN102447376A
CN102447376A CN2010102999587A CN201010299958A CN102447376A CN 102447376 A CN102447376 A CN 102447376A CN 2010102999587 A CN2010102999587 A CN 2010102999587A CN 201010299958 A CN201010299958 A CN 201010299958A CN 102447376 A CN102447376 A CN 102447376A
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CN
China
Prior art keywords
permanent magnet
magnetic
rotor
external rotor
internal rotor
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CN2010102999587A
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Chinese (zh)
Inventor
黄越
张映明
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东元总合科技(杭州)有限公司
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Priority to CN2010102999587A priority Critical patent/CN102447376A/en
Publication of CN102447376A publication Critical patent/CN102447376A/en

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Abstract

The invention provides a new magnetic gear and a magnetic transmission device based on the magnetic gear, which are used for solving the problem of higher cost of the existing magnetic gear without lowering the torque density of the magnetic gear. For the magnetic gear, permanent magnets of the inner and outer rotors of the magnetic gear are separated by a magnetic material and are tangentially magnetized, and the supporting parts of the inner and outer rotors are made from a non-magnetic material. In the invention, as magnetic fields are converged to be enhanced at opposite sides of two groups of permanent magnets, the number of the permanent magnets is reduced by one half and the cost of the magnetic gear is lowered by one quarter in the case of equal torque density, and meanwhile the magnetic transmission device can obtain relatively higher torque density as well as a large transmission ratio by virtue of cycloidal motion between the first group of permanent magnets and the second group of permanent magnets.

Description

Magnetic gear and magnetic transmission device

Technical field

The present invention relates to magnetic drive technology field, more particularly, relate to a kind of magnetic gear and use the magnetic transmission device of this magnetic gear.

Background technology

Mechanical gear is a kind of common mechanism that is used for transmission, and it has advantages such as transmission efficiency height, torque density are big, and through long development and improvement, it is very ripe that mechanical gear and utilization mechanical gear carry out transmission.But mechanical gear is because of own characteristic, exists vibration, noise bigger, need under lubricated situation, use, the problem that needs periodic maintenance etc. self can't overcome.Progress along with scientific and technological level; People are also increasingly high to the requirement of drive system; Through selecting high performance material for use, profile of tooth being carried out fine finishining is handled and improve measures such as lubricated, the performance of mechanical gear has had very big improvement, but still fails fundamentally to address these problems.

In order to solve some problem that mechanical gear exists, being developed of magnetic gear.Magnetic gear is to utilize magnetic field to carry out transmission of torque, compares with mechanical gear to have special advantage, such as:

1) magnetic gear can reduce machinery noise and vibration owing to be untouchable between input and the output;

2) magnetic gear need not lubricate, and therefore can reduce maintenance, increases the reliability of system;

3) magnetic gear has definite peak torque, himself has the overload protection ability;

4) be untouchable between input and the output, these characteristics make it in fluid pump class driving such as poisonous, harmful, have special advantage;

5) magnetic gear has higher transmission efficiency;

6) permanent magnet is directly installed on the surface of geared parts in relative rotation in the magnetic gear, will carry out fine finishining and heat treatment to tooth portion unlike the mechanical gear that kind, has simplified production technology.

For magnetic gear; Because the consumption of permanent magnet is very big, the cost of permanent magnet accounts for about 50% of magnetic gear total cost greatly, need practice thrift under the operating position of cost at some; When guaranteeing torque density, the cost that how to reduce magnetic gear is the problem that needs solve.

Summary of the invention

The objective of the invention is in order to solve the too high problem of magnetic tooth cost; A kind of new magnetic gear is provided under the situation that does not reduce the magnetic gear torque density; Simultaneously; A kind of magnetic transmission device with high transmission ratio, relative higher torque density is provided, in such as MW class wind turbine, to carry out transmission.

The technical problem that the present invention solved can adopt following technical scheme to realize:

First aspect of the present invention; A kind of magnetic gear is characterized in that, comprising: rotating internal rotor and external rotor; The outer surface of internal rotor and the inner surface of external rotor are respectively equipped with first group of permanent magnet and the second group of permanent magnet that is provided with at interval; Between first group of permanent magnet and second group of adjacent two permanent magnet of permanent magnet is permeability magnetic material, and the magnetizing direction of each permanent magnet is along the circumference tangential, and the magnetizing direction of each permanent magnet and one of which side adjacent permanent magnet is relative; Opposing with the magnetizing direction of its opposite side adjacent permanent magnet, internal rotor and external rotor adopt non-magnet_conductible material to process to the support portion that first group of permanent magnet and second group of permanent magnet support.

Among the present invention; It is the permanent magnet of rectangle that the permanent magnet of internal rotor and external rotor adopts the cross section; Through on internal rotor outer surface and external rotor inner surface permeability magnetic material, being provided with and the axial groove of permanent magnet identical cross-sectional shape separately, adopt the mode of inserting pack into internal rotor and external rotor.

Among the present invention, the coaxial setting of internal rotor and external rotor is provided with magnetic field between adjustment internal rotor and the external rotor between internal rotor and the external rotor, promotes one group of adjustable magnetic lamination of inside and outside rotor field coupling; Internal rotor and external rotor are eccentric to be provided with, and can carry out relative cycloid motion between internal rotor and the external rotor.

Second aspect of the present invention, a kind of magnetic transmission device is characterized in that; Comprise: rotating internal rotor and external rotor, the outer surface of internal rotor and the inner surface of external rotor are respectively equipped with first group of permanent magnet and the second group of permanent magnet that is provided with at interval, are permeability magnetic material between first group of permanent magnet and second group of adjacent two permanent magnet of permanent magnet; The magnetizing direction of each permanent magnet is along the circumference tangential; The magnetizing direction of each permanent magnet and one of which side adjacent permanent magnet is relative, and is opposing with the magnetizing direction of its opposite side adjacent permanent magnet, and internal rotor and external rotor adopt non-magnet_conductible material to process to the support portion that first group of permanent magnet and second group of permanent magnet support; Element; With internal rotor and external rotor effect, make the magnetic transmission device in when operation, first group of permanent magnet and and second group of permanent magnet between produce relative cycloid motion.

Among the present invention, fixedly external rotor carries out transmission between internal rotor and element; Perhaps fixing element is carried out transmission between internal rotor and external rotor.

The present invention is because non-magnet_conductible material is adopted in the support portion that inside and outside rotor supports permanent magnet, makes originally in first group of permanent magnet and the second group of permanent magnet magnetic field that forms, both sides separately, carried out compiling and strengthens two groups of relative sides of permanent magnet; Improved the utilance of permanent magnet; Under the suitable situation of torque density, the consumption of permanent magnet has reduced half the, and the cost of magnetic gear has reduced by 1/4; Iron core only is set between permanent magnet carries out magnetic conduction; Other parts all can adopt non-magnetic conduction construction such as duralumin or pottery to replace, and have reduced the weight of magnetic gear unit volume, obtain architectural characteristic preferably; The magnetic transmission device when obtaining high torque density, can obtain a very big gearratio through the cycloid motion between first group of permanent magnet and the second group of permanent magnet.

Description of drawings

Fig. 1 is the structural representation of existing magnetic gear

Fig. 2 is the axial arrangement sketch map of the existing magnetic gear of Fig. 1

Fig. 3 is the structural representation of the magnetic gear of the coaxial setting of inner and outer rotors of the present invention

Fig. 4 is the structural representation of the eccentric magnetic gear that is provided with of inner and outer rotors of the present invention

Fig. 5 is the fixing three-element structural representation of magnetic transmission device first embodiment of the present invention

Fig. 6 is the fixedly structural representation of external rotor of magnetic transmission device first embodiment of the present invention

Fig. 7 is the fixing three-element structural representation of magnetic transmission device second embodiment of the present invention

Embodiment

For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.

Purport of the present invention is guaranteeing under the suitable situation of torque density; Reduce the cost of magnetic gear as far as possible; A kind of new magnetic gear is provided; Simultaneously, based on this magnetic gear a kind of magnetic transmission device that possesses high transmission ratio and relative higher torque density simultaneously is provided, in such as MW class wind turbine, to carry out transmission.

Like Fig. 1, shown in Figure 2; Existing magnetic gear comprises the first rotor also or be referred to as internal rotor 1, and second rotor also or be referred to as external rotor 2, and the outer surface of internal rotor 1 is provided with first group of permanent magnet 11; It is supported by the support portion 12 that magnetic material is processed; The inner surface of external rotor 2 is provided with second group of permanent magnet 21, and it is supported by the support portion 22 that magnetic material is processed, and first group of permanent magnet 11 and second group of permanent magnet 21 are all along radially magnetizing; Magnetizing direction between first group of permanent magnet 11 and second group of adjacent separately two permanent magnet of permanent magnet 21 is opposite, and adjacent two permanent magnets constitute 1 pair of magnetic pole.

Internal rotor 1 and external rotor 2 coaxial settings, (English is referred to as pole pieces, because of it is overrided to form by the core lamination of a plurality of sheets usually to be provided with one group of adjustable magnetic lamination 3 between internal rotor 1 and the external rotor 2; The domestic scholars that early contacts magnetic gear is translated into the adjustable magnetic lamination; Widely-used at present), adjustable magnetic lamination 3 is provided with at interval, and it is supported by columniform non magnetic support portion 31 usually; The effect of adjustable magnetic lamination 3 is the magnetic field of air gap between first group of permanent magnet blocks 11 of adjustment and the second group of permanent magnet blocks 21; Promote magnetic field coupling between two groups of permanent magnets, in order to make 3 pairs of magnetic field adjustment of adjustable magnetic lamination reach optimum efficiency, the quantity of adjustable magnetic lamination 3 is internal rotor 1 and external rotor 2 magnetic pole logarithm sums; Pertinent literature no longer tires out here and states the existing explanation of its principle.

For example; In the above-mentioned execution mode, internal rotor 1 is 4 pairs of utmost points, and external rotor 2 is 17 pairs of utmost points; Adjustable magnetic lamination 3 is 21; When the rotating shaft that links to each other with internal rotor 1 or external rotor 2 in internal rotor 1 or external rotor 2 any side drives was rotated, internal rotor 1 and external rotor 2 be backward rotation each other, can need to carry out the magnetic transmission between two mechanisms of transmission.The rotating speed of internal rotor 1 is W 1, the rotating speed of external rotor is W 2, the magnetic pole logarithm of internal rotor is P 1, the magnetic pole logarithm of external rotor is P 2, then have: W 1/ W 2=P 2/ P 1, the gearratio of magnetic gear is by the magnetic pole logarithm ratio decision of inner and outer rotors.

It is to be noted; Because the mode of first group of permanent magnet 11 and second group of permanent magnet 21 radial magnetizing; First group of permanent magnetism 11 and second group of permanent magnet 21 all produce magnetic field in both sides separately; And internal rotor 1 is when carrying out transmission with external rotor 2, and main effect is the action of a magnetic field transmitting torque through two groups of relative sides of permanent magnet, therefore in order to make full use of first group of permanent magnet 11 and second group of permanent magnet 21; Internal rotor 1 supports the support portion 12 of first group of permanent magnet 11, and external rotor 2 support portion 22 of supporting second group of permanent magnet 21 needs to adopt permeability magnetic materials to process to carry out magnetic conduction.The most frequently used permeability magnetic material is an iron core, has therefore increased the total weight of magnetic gear greatly, and nonetheless, the magnetic field that also can't utilize two groups of permanent magnets to produce fully, the utilance of permanent magnet is lower, causes the torque density of magnetic gear low very low.

Referring to Fig. 3; Magnetic gear of the present invention is at internal rotor 1a and external rotor 2a is coaxial when being provided with; The structural similarity (therefore having omitted the axial arrangement sketch map of Fig. 5) of the magnetic gear that is provided with existing inside and outside rotor coaxial; Difference is that first group of permanent magnet 11a of magnetic gear internal rotor 1a of the present invention is arranged on the outer surface of internal rotor 1a at interval, is permeability magnetic material, for example iron core between the two adjacent permanent magnets.All along the tangential direction of circumference, the magnetizing direction of each permanent magnet and one of which side adjacent permanent magnet is relative, and is opposing with the magnetizing direction of its opposite side adjacent permanent magnet for the magnetizing direction of first group of each permanent magnet of permanent magnet 11a.The support portion 12a that internal rotor 1a supports first group of permanent magnet 11a adopts non-magnet_conductible material to process, and more excellent is the non-magnet_conductible material that adopts lightweight, for example duralumin, pottery, and other composite materials etc. are to reduce the weight of magnetic gear.

In like manner; Second group of permanent magnet 21a of external rotor 2a is arranged on the inner surface of external rotor 2a at interval; Be similarly permeability magnetic material between the two adjacent permanent magnets, also all along the tangential direction of circumference, the magnetizing direction of each permanent magnet and one of which side adjacent permanent magnet is relative for the magnetizing direction of second group of each permanent magnet of permanent magnet 21a; Opposing with the magnetizing direction of its opposite side adjacent permanent magnet, the support portion 22a that external rotor 2a supports second group of permanent magnet 21a adopts non-magnet_conductible material to process.

Therefore; First group of permanent magnet 11a side formation within it magnetic field; Second group of permanent magnet 21a can't form magnetic field in its outside, first group of permanent magnet 11a, and the adjacent and magnetic lines of force two permanent magnets that magnetizing direction is relative converge to the iron core between the two; Point to the outside of first group of permanent magnet 11a through the iron core magnetic conduction, and the iron core through two permanent magnet two ends forms loop (do not illustrate among the figure magnetic line of force direction); Second group of permanent magnet 21a, the adjacent and magnetic lines of force two permanent magnets that magnetizing direction is relative converge to the iron core between the two, point to the inboard of first group of permanent magnet 21a through the iron core magnetic conduction, and same iron core through two permanent magnet two ends forms the loop.The iron core of adjacent like this, in fact and two permanent magnets that magnetizing direction is relative and the iron core between the two, the two both sides (can think the half the of both sides iron core) has constituted a pair of magnetic pole of internal rotor 1a or external rotor 2a.

First group of permanent magnet 11a and second group of permanent magnet 21a have formed the magnetic field of compiling and strengthening in its relative side; Because the inside and outside rotor effect of magnetic gear mainly relies on the magnetic field of the generation of the two relative side; Consumption at permanent magnet reduces under the half the situation; The available torque of magnetic gear does not really reduce, but the cost of magnetic gear has really reduced about 1/4.Simultaneously, only adopt permeability magnetic material between the permanent magnet, the non-magnet_conductible material of lightweight all can be adopted in the support portion of inside and outside rotor, and the weight of magnetic gear unit volume has also obtained reduction.

But when inside and outside rotor coaxial is provided with; With internal rotor 1a is input; With external rotor 2a is output, and the gearratio of gear roughly can only be chosen in the 1.5-11.5 scope, and this is because of the increase along with gearratio; Cogging torque between the inside and outside rotor (cogging torque) also can increase thereupon, and excessive cogging torque can influence the transmission efficiency of magnetic gear.Therefore; Although the magnetic gear of inside and outside rotor coaxial setting can obtain higher torque density, receive the restriction of self-characteristic, it is very big that its gearratio cannot be done; Need be than the field of big speed ratio; For example in the transmission of MW class wind turbine (gearratio about about 100 usually) must be through multistage transmission, and this obviously makes the structure of the transmission device more complicated that becomes, and the difficulty of making, safeguarding is correspondingly increase all.

Referring to Fig. 4, in order to address the above problem, the inside and outside rotor of magnetic gear of the present invention is except coaxial the setting; Can also eccentricly be provided with; The outer surface of magnetic gear internal rotor 1b and the inner surface of external rotor 2b are respectively equipped with first group of permanent magnet 11b and second group of permanent magnet 21b (black part is divided into iron core, and white portion is a permanent magnet), the set-up mode of permanent magnet and the mode of magnetizing with coaxial be provided with identical; Just no longer tired having stated; Simultaneously, because the permanent magnet number is more, the magnetizing direction to permanent magnet does not mark.

Need not to be provided with the adjustable magnetic lamination between the inside and outside rotor; When the axle center of internal rotor 1b rotated around external rotor 2b axle center after off-centre was provided with; Also the axle center around self rotates; Promptly carry out relative cycloid motion between internal rotor 1b and the external rotor 2b, making like this wins produces relative cycloid motion between group permanent magnet 11b and second group of permanent magnet 21b.

Compare with the magnetic gear of inside and outside rotor coaxial setting; Any time, the larger amt permanent magnet that all has of inside and outside rotor closely acted on (although the telekinesy of part permanent magnet is arranged; But the mass action when being provided with inner and outer rotors is coaxial is effective); Under the identical situation of permanent magnet consumption, bigger torque can be provided.Internal rotor 1b supports the support portion 12b of first group of permanent magnet 11b, and external rotor 2b support the support portion 22b of second group of permanent magnet 21b also can be the same with the magnetic gear of coaxial setting, adopt the non-magnet_conductible material of lightweight to process.

But; Only need that with the magnetic gear of coaxial setting rotating shaft is set on inside and outside rotor and can constitute the magnetic transmission device; Carry out the magnetic transmission different be when inside and outside rotor eccentricity is provided with, also needs other auxiliary elements could constitute the magnetic transmission device and carry out the magnetic transmission.

Referring to Fig. 5; Make the internal rotor 1b and the external rotor 2b of magnetic transmission device carry out relative cycloid operation; And then make to win and produce relative cycloid motion between group permanent magnet 11b and the second group of permanent magnetism 21b and (be divided into iron core with Fig. 4 black part; White portion is a permanent magnet, and the actual quantity of two groups of permanent magnets is not the qualification to two groups of optional quantity of permanent magnet of the present invention).Special rotating shaft 13b at first is set, the axis coinciding of the axle center of rotating shaft 13b and external rotor 2b on internal rotor 1b; A plurality of axially extending bores are set on internal rotor 1b then, for example are provided with 3 axially extending bores in the present embodiment.

Element comprises one 41, and axle 41 is provided with internal rotor 1b and goes up the axial pin 42 that number of openings equates, pin 42 stretches in the through hole of the correspondence on the internal rotor 1b, and the outer surface of each pin 42 pastes with the inner surface that internal rotor 1b goes up corresponding through hole mutually.Three-element axle 41 is fixed; With rotating shaft 13b is that input rotates; Rotating shaft 13b rotates and can drive internal rotor 1b rotation on one side, and rotate around the axle center of external rotor 2b on one side in the axle center of internal rotor 1b, and each through hole on the internal rotor 1b will rotate around the outer surface of corresponding pin 41; Internal rotor 1b is relative, and external rotor 2b carries out cycloid motion; Transmitting torque under the magnetic action of first group of permanent magnet 11b and second group of permanent magnet 21b, external rotor 2b rotate around self axle center and rotating shaft 13b as output under the drive of internal rotor 1b in the same way, have realized the magnetic transmission.

In this case, the gearratio R=P of magnetic transmission device 2/ (P 2-P 1), P wherein 1Be the magnetic pole logarithm of internal rotor 1b, P 2Magnetic pole logarithm for external rotor.When external rotor during only than the how a pair of magnetic pole of internal rotor, when torque density is improved, can obtain a very big gearratio, 100 pairs of magnetic poles of external rotor 2b employing for example, internal rotor 1b adopts 99 pairs of magnetic poles, and gearratio will reach 100.

Referring to Fig. 6, in the present embodiment, except element is fixed; Can also select external rotor 2b is fixed, carry out transmission with rotating shaft 13b as input equally, rotating shaft 13b rotates can drive internal rotor 1b rotation on one side equally; Rotate around the axle center of external rotor 2b on one side in the axle center of internal rotor 1b; The magnetic action driving torque of first group of permanent magnet 11b and second group of permanent magnet 21b, pin 42 are under the active force of the through hole of internal rotor 1, with driving axle 41 to rotate with the direction of rotating shaft 13b direction of rotation; Axle 41 has been realized the magnetic transmission as output.

In this case, the gearratio R=P of magnetic transmission device 1/ (P 1-P 2), P wherein 1Be the magnetic pole logarithm of internal rotor 1b, P 2Magnetic pole logarithm for external rotor.When external rotor during only than the how a pair of magnetic pole of internal rotor; When torque density is improved; Also can obtain a very big gearratio, for example external rotor 2b adopts 100 pairs of magnetic poles, and internal rotor 1b adopts 99 pairs of magnetic poles; Gearratio will reach-99, and negative sign is represented the direction of rotation of output and input.

Above-mentioned magnetic tumbler just can directly apply to the transmission between MW class wind turbine and the fan blade; When element fixedly the time; Rotating shaft 13b connects the wind-driven generator rotating shaft, and external rotor 2b connects fan blade rotating shaft (perhaps also need necessarily change with the fan blade rotating shaft and be connected); As external rotor 2b fixedly the time, rotating shaft 13b connects the wind-driven generator rotating shaft, and axle 41 connects the fan blade rotating shafts.Certainly, external rotor 2b or axle 41 are as input at this moment, and through the transmission of magnetic transmission device, the output of rotating shaft 13b has reached tangible raising speed, has realized the purpose of high speed high pulling torque.

When obtaining big speed ratio; The magnetic pole logarithm of inside and outside rotor also correspondingly increases; The quantity of the permanent magnet that is provided with on the inside and outside rotor will be 4 times of magnetic pole logarithm, 100 pairs of magnetic poles of for example above-mentioned external rotor, 99 pairs of magnetic poles of internal rotor; The quantity of permanent magnet will reach nearly 800, and this makes magnetizing of permanent magnet and assembling become cumbersome.

Referring to Fig. 4, can adopt cross sectional shape is the permanent magnet of rectangle again, so only needs to prepare the permanent magnet that magnetizes along the cross-sectional width direction, and the program that magnetizes that this has simplified permanent magnet greatly can improve the efficient that magnetizes of permanent magnet.At this moment; On the permeability magnetic material of internal rotor outer surface and external rotor inner surface, be provided with and the axial groove of permanent magnet identical cross-sectional shape (meaning not shown in the figures separately; In addition, the cross sectional shape of inside and outside rotor permanent magnet possibly be different), according to the rule of permanent magnet magnetizing direction; Permanent magnet with different magnetizing directions inserts axial groove successively, can accomplish the assembling of inside and outside rotor permanent magnet.Certainly, permanent magnet also can adopt conventional fan-shaped or trapezoid cross section fully, and above-mentioned execution mode is not a limitation of the present invention, and the magnetic gear (magnetic transmission device) that is provided with for inside and outside rotor coaxial also can adopt above-mentioned execution mode.

It is to be noted; Present embodiment just describes the principle of magnetic transmission device; The structure of each element has all adopted the processing mode of relatively simplifying; For example rotating shaft 13b will rotate structure countershaft 13b such as bearing possibly also need be set with external rotor 2b concentric and supports, and element is fixedly the time, and external rotor 2b possibly also need connect rotating shaft as output (perhaps input).Present embodiment does not carry out detailed explanation to the problems referred to above, and those skilled in the art should know according to principle of the present invention and how to handle, and the present invention has carried out open fully.

According to principle of the present invention, element obviously can also have other forms.Referring to Fig. 7; Among this embodiment, element comprises a housing 5, and internal rotor 1c and external rotor 2c all are arranged in the housing 5; First group of permanent magnet 11c is arranged on the outer surface of internal rotor 1c; Second group of permanent magnet 21c is arranged on the inner surface of external rotor 2c, and housing 5 two ends are provided with bearing 51 and bearing 52, and bearing 51 supports and the suitable rotating shaft 13c of the first embodiment shaft 13b effect; Bearing 52 supports the rotating shaft 23c that is connected with external rotor 2c, and a plurality of pin 42a are arranged on the side of rotating shaft 13c and are fixed on housing 5 inside.

In the present embodiment, housing 5 has constituted element with a plurality of pin 42a, and is the execution mode that element is fixed, and needs two mechanisms of transmission to connect rotating shaft 13c respectively and rotating shaft 23c can realize transmission.Owing among first embodiment, principle of the present invention is proved absolutely, no longer tires out in the present embodiment and state.

It is understandable that, as long as element and internal rotor and external rotor effect, make the magnetic transmission device when moving, first group of permanent magnet and and second group of permanent magnet between the relative cycloid motion of generation, can reach the object of the invention.Below only be that element is carried out schematic illustration, limitation of the present invention not, all three-element structures according to the invention all will fall into the scope of requirement protection of the present invention.

More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.

Claims (7)

1. magnetic gear; It is characterized in that; Comprise: rotating internal rotor and external rotor, the outer surface of internal rotor and the inner surface of external rotor are respectively equipped with first group of permanent magnet and the second group of permanent magnet that is provided with at interval, are permeability magnetic material between first group of permanent magnet and second group of adjacent two permanent magnet of permanent magnet; The magnetizing direction of each permanent magnet is along the circumference tangential; The magnetizing direction of each permanent magnet and one of which side adjacent permanent magnet is relative, and is opposing with the magnetizing direction of its opposite side adjacent permanent magnet, and internal rotor and external rotor adopt non-magnet_conductible material to process to the support portion that first group of permanent magnet and second group of permanent magnet support.
2. magnetic gear as claimed in claim 1; It is characterized in that: it is the permanent magnet of rectangle that the permanent magnet of internal rotor and external rotor adopts the cross section; Through on internal rotor outer surface and external rotor inner surface permeability magnetic material, being provided with and the axial groove of permanent magnet identical cross-sectional shape separately, adopt the mode of inserting pack into internal rotor and external rotor.
3. according to claim 1 or claim 2 magnetic gear is characterized in that: the coaxial setting of internal rotor and external rotor, be provided with magnetic field between adjustment internal rotor and the external rotor between internal rotor and the external rotor, and promote one group of adjustable magnetic lamination of inside and outside rotor field coupling.
4. according to claim 1 or claim 2 magnetic gear, it is characterized in that: internal rotor and external rotor are eccentric to be provided with, and can carry out relative cycloid motion between internal rotor and the external rotor.
5. the magnetic transmission device is characterized in that, comprising: rotating internal rotor and external rotor; The outer surface of internal rotor and the inner surface of external rotor are respectively equipped with first group of permanent magnet and the second group of permanent magnet that is provided with at interval; Between first group of permanent magnet and second group of adjacent two permanent magnet of permanent magnet is permeability magnetic material, and the magnetizing direction of each permanent magnet is along the circumference tangential, and the magnetizing direction of each permanent magnet and one of which side adjacent permanent magnet is relative; Opposing with the magnetizing direction of its opposite side adjacent permanent magnet; Internal rotor and external rotor adopt non-magnet_conductible material to process to the support portion that first group of permanent magnet and second group of permanent magnet support, and element is with internal rotor and external rotor effect; Make the magnetic transmission device in when operation, first group of permanent magnet and and second group of permanent magnet between produce relative cycloid motion.
6. magnetic transmission device as claimed in claim 5 is characterized in that: fixing external rotor, carry out transmission between internal rotor and element.
7. magnetic transmission device as claimed in claim 5 is characterized in that: fixing element, between internal rotor and external rotor, carry out transmission.
CN2010102999587A 2010-10-08 2010-10-08 Magnetic gear and magnetic transmission device CN102447376A (en)

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CN102780381A (en) * 2012-07-26 2012-11-14 大连交通大学 Magnetic transmission speed-transformation device
CN102931810A (en) * 2012-11-27 2013-02-13 镇江市江南矿山机电设备有限公司 Interaxial permanent magnet coupling mechanism
CN103023241A (en) * 2012-11-27 2013-04-03 镇江市江南矿山机电设备有限公司 Interaxial permanent magnet coupling mechanism
CN103490588A (en) * 2013-09-11 2014-01-01 辽阳泰科雷诺科技有限公司 Double-layer sleeve type permanent-magnetic eddy transmission device of magnet-gathering type magnetic structure
CN103647379A (en) * 2013-12-25 2014-03-19 中国航空工业集团公司沈阳空气动力研究院 Permanent magnetic gear speed changer
CN103840637A (en) * 2014-03-17 2014-06-04 华中科技大学 Magnetic field modulation type permanent magnetic coupler
WO2014158968A1 (en) 2013-03-14 2014-10-02 National Oilwell Varco, L.P. Magnetic cycloid gear
CN104401389A (en) * 2014-10-28 2015-03-11 南京林业大学 Permanent-magnetic clutch electric power-assisted steering system
CN105071633A (en) * 2015-09-11 2015-11-18 福州大学 Novel non-contact type two-stage nutation transmission device and transmission method thereof
TWI680909B (en) * 2018-05-31 2020-01-01 國立雲林科技大學 Magnetic continuously variable transmission device and controlling method thereof
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CN101182849A (en) * 2007-12-07 2008-05-21 华南理工大学 Magnetic drive high speed turbocharger
CN101534045A (en) * 2008-03-14 2009-09-16 刘新广 Magnetic straight-moving driving rotation mechanism
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CN102780381A (en) * 2012-07-26 2012-11-14 大连交通大学 Magnetic transmission speed-transformation device
CN103023241A (en) * 2012-11-27 2013-04-03 镇江市江南矿山机电设备有限公司 Interaxial permanent magnet coupling mechanism
CN102931810A (en) * 2012-11-27 2013-02-13 镇江市江南矿山机电设备有限公司 Interaxial permanent magnet coupling mechanism
WO2014158968A1 (en) 2013-03-14 2014-10-02 National Oilwell Varco, L.P. Magnetic cycloid gear
EP2971778A4 (en) * 2013-03-14 2016-11-09 Nat Oilwell Varco Lp Magnetic cycloid gear
CN103490588B (en) * 2013-09-11 2015-06-17 辽阳泰科雷诺科技有限公司 Double-layer sleeve type permanent-magnetic eddy transmission device of magnet-gathering type magnetic structure
CN103490588A (en) * 2013-09-11 2014-01-01 辽阳泰科雷诺科技有限公司 Double-layer sleeve type permanent-magnetic eddy transmission device of magnet-gathering type magnetic structure
CN103647379A (en) * 2013-12-25 2014-03-19 中国航空工业集团公司沈阳空气动力研究院 Permanent magnetic gear speed changer
CN103647379B (en) * 2013-12-25 2016-08-17 中国航空工业集团公司沈阳空气动力研究所 Permanent magnet gear transmission device
CN103840637A (en) * 2014-03-17 2014-06-04 华中科技大学 Magnetic field modulation type permanent magnetic coupler
CN104401389A (en) * 2014-10-28 2015-03-11 南京林业大学 Permanent-magnetic clutch electric power-assisted steering system
CN105071633A (en) * 2015-09-11 2015-11-18 福州大学 Novel non-contact type two-stage nutation transmission device and transmission method thereof
US10715025B2 (en) 2015-10-01 2020-07-14 National Oilwell Varco, L.P. Radial magnetic cycloid gear assemblies, and related systems and methods
TWI680909B (en) * 2018-05-31 2020-01-01 國立雲林科技大學 Magnetic continuously variable transmission device and controlling method thereof

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Application publication date: 20120509