CN102647069A - Magnetic transmission bevel gear pair with inclined air gap field - Google Patents
Magnetic transmission bevel gear pair with inclined air gap field Download PDFInfo
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- CN102647069A CN102647069A CN201210046067XA CN201210046067A CN102647069A CN 102647069 A CN102647069 A CN 102647069A CN 201210046067X A CN201210046067X A CN 201210046067XA CN 201210046067 A CN201210046067 A CN 201210046067A CN 102647069 A CN102647069 A CN 102647069A
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- driving wheel
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- helical gear
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Abstract
The invention discloses a novel magnetic transmission bevel gear pair with an inclined air gap field. The novel magnetic transmission bevel gear pair comprises a stator, a drive wheel and a driven wheel, wherein the stator is axially provided with a through inward conical inner cavity, and the inner surface of the inner cavity is provided with a plurality of stator permanent blocks; the driven wheel comprises a front connection sleeve, a back connection end cover and an iron magnetic gate which is arranged between the front connection sleeve and the back connection end cover, the exterior appearance of the iron magnetic gate is in an external conical shape matched with the inner cavity of the stator, the interior of the iron magnetic gate is of an inward conical cavity structure, and the conical surface of the iron magnetic gate is provided with a plurality of conical holes distributed in a radiation manner; and the drive wheel comprises an input shaft, an external conical wheel body and a connection shaft which are sequentially connected, the external conical wheel body is matched with the inward conical cavity structure of the iron magnetic gate, and a plurality of drive wheel permanent magnetic blocks are arranged on the surface of the external conical wheel body. According to the novel magnetic transmission bevel gear pair disclosed by the invention, contact friction of a normal mechanical gear transmission pair is eliminated, the transmission loss only comprises some iron core losses, the highest efficiency can reach 96% theoretically and is generally 10% higher than that of a mechanical gear.
Description
Technical field
The present invention relates to a kind of helical gear transmission component, particularly a kind of magnetic transmission helical gear pair of oblique air-gap field.
Background technology
Drag in the method for torque in raising, mechanical type gear graduation transmission application is very extensive, but its transmission citation form does not change for a long time, promptly is all the time to rely on the engagement of two gear teeth of mechanical type gear pair to carry out transmission.This has just brought some problems that can not eliminate to gear drive; Like mechanical fatigue, frictional dissipation, vibrating noise etc.; Although can adopt the grease lubrication technology; But above problem still can't be eradicated, and causes working service extremely loaded down with trivial details, and the gear-driven theoretical efficiency of mechanical type at most also can only reach 85%; The mechanical type gear pair transmission of fixed conveyor speed ratio makes and need can't adapt to increasing infinite variable speed drive technology requirement at more multistage, the stepping speed adjusting gear complex structure of wide speed range.
China is the abundantest country of rare earth permanent-magnetic material in the world, and the application of greatly developing rare earth material has realistic meanings to China.Progress along with control technology; Rare earth permanent-magnetic material drives the field at electricity and is used widely, all kinds of motor products that rare earth permanent-magnetic material is made, and the torque density that its unit volume material transmits is big; Efficiency of energy utilization height and energy consumption is little demonstrates the huge superiority of its rare earth material.Rare earth permanent-magnetic material is in the application of mechanical transmission fields; Just be in the starting stage both at home and abroad; Britain engineers in 2004 have accomplished a kind of design work of novel radial magnetic field magnetic gear from the concrete practice of theoretical and model machine; Overcome the less shortcoming of permanent magnet gear driving torque in the past, this has opened up an important research direction and following application in the application of mechanical transmission fields for permanent magnetic material; At present all do not see achievement in research about the bigger transverse magnetic field magnetic gear structure of carry-over moment and the oblique air-gap field magnetic gear structure of comprehensive transverse magnetic field and radial magnetic field characteristic.
Summary of the invention
In view of this, the magnetic transmission helical gear pair that the purpose of this invention is to provide a kind of oblique air-gap field.
The objective of the invention is to realize through following technical scheme:.
The magnetic transmission helical gear pair of oblique air-gap field of the present invention comprises
Stator; Said stator is provided with the inner chamber of a perforation vertically, and said inner chamber is inner conical, and the surface of said inner chamber is provided with the stator permanent magnet piece of a plurality of radial arrangements vertically; Said stator permanent magnet piece is provided with the N utmost point and the extremely spaced mode of S, and total number of pole-pairs is p
r
Driven pulley; Said driven pulley comprise preceding adapter sleeve, back connect end cap and be arranged on before adapter sleeve with after be connected the ferromagnetic grid between the end cap; The external shape of said ferromagnetic grid is the cylindrical taper with the inner chamber conformal of stator; The inside of said ferromagnetic grid is the cavity body structure that is inner conical, evenly is provided with a plurality of tapered hole that distribute radially on the conical surface of said ferromagnetic grid vertically, is Zg magnetic conduction grid tooth that plays the magnetic conduction effect between the tapered hole; The cylindrical that said back connects end cap is that tight fit is connected with the big end of ferromagnetic grid, and the center that said back connects end cap outwards vertically is provided with an output shaft;
Driving wheel; Said driving wheel comprise successively the power shaft that connects, with the cylindrical taper wheel body and the connecting axle of ferromagnetic grid internal cavity structure conformal; The surface of said cylindrical taper wheel body is provided with the driving wheel permanent magnet blocks of a plurality of radial arrangements vertically; Said driving wheel permanent magnet blocks is provided with the N utmost point and the extremely spaced mode of S, and total number of pole-pairs is p
s, said number of pole-pairs p
sAnd p
rThe positive integer that is an odd number, an even number is right;
The preceding adapter sleeve of said driven pulley is connected on the power shaft of driving wheel through bearing I II; The connecting axle of said driving wheel is connected with the back end cap that is connected of driving wheel with concentric manner through bearing I V; The wheel body of said driving wheel is contained in the internal cavity structure of the ferromagnetic grid of driven pulley; Between said bore of stator and the ferromagnetic grid, and do not contact mutually between the wheel body of ferromagnetic grid and driving wheel and the big small end of the outside conical surface of three towards identical;
Said driving wheel permanent magnet blocks and stator permanent magnet piece are oppositely arranged, and constitute the air-gap field of magnetic transmission helical gear pair jointly, and this magnetic field sees through the bellmouth of ferromagnetic grid, and air gap passes and forms the oblique magnetic field of magnetic transmission helical gear pair from the space.
Further, magnetic conduction grid tooth number Z g, the number of pole-pairs p of the ferromagnetic grid of said driven pulley (5)
r, number of pole-pairs p
sSatisfy following relation constraint:
Zg＝p
r+p
s；
Further, said magnetic transmission helical gear pair comprises that also two ends are provided with the shell body of input, output shaft interface channel, and said stator, driving wheel and driven pulley all are arranged in the shell body;
Further; Said shell body comprises front end housing, rear end cap and the middle casing that is connected with the cylindrical of forward and backward end cap; Be respectively arranged with input, output shaft interface channel on the center of said front end housing and rear end cap and on two interface channels, be respectively arranged with bearing I and bearing I I; The power shaft of said driving wheel sees through bearing I and fixes, and the output shaft of said driven pulley is fixed through bearing I I;
Further, the internal structure of said stator is a core structure;
Further, the core structure of stator is in aggregates through striking out sheet and laminating rivet welding by the silicon steel plate of magnetic conduction;
Further, the wheel body of said driving wheel is a core structure;
Further, the ferromagnetic grid of said driven pulley by the sheet metal of magnetic conduction through striking out sheet, the tapered funnel shaped of drawn again, it is in aggregates that multi-disc laminates rivet welding, after metal cutting shape.
The invention has the beneficial effects as follows:
1. energy loss is little, and transmission efficiency is high: owing to eliminated the contact friction of standard machinery formula gear driving pair, power transmission loss only comprises some core loss, and the highest transmission efficiency can reach 96% in theory, generally improves 10% than mechanical gear transmission;
2. the torque density that transmits of unit volume is high, and be 10 times of common electric machine: research shows that the rare-earth permanent magnet brushless motor is under natural cooling, air blast cooling, water-cooled condition, and the torque density of its transmission can reach 10kN.m/m respectively
3, 20kN.m/m
3, 30kN.m/m
3, the torque density that the transverse magnetic flux rare-earth permanent-magnet electric machine transmits can reach 40～80kN.m/m
3, and the torque density that the rare-earth magnetic travelling gear of this novel oblique air-gap field is transmitted can be higher than 100kN.m/m
3
3. reliability is high, and the life-span is long: owing to do not have the machinery contact, so no mechanical abrasion need not to lubricate cleaning, no greasy dirt, dustproof and waterproof etc.;
4. the vibrating noise that produces because of the engagement contact of tooth portion when not having the mechanical gear transmission;
5. have overload protective function, when overload, cut off drive connection at any time, can not damage load or prime mover because of driving and driven wheel spike;
6. the rotating speed gearratio is constant, and the dynamic instantaneous stability of rotating speed is high, operates steadily.
Other advantages of the present invention, target and characteristic will be set forth in specification subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from practice of the present invention, obtain instruction to investigating of hereinafter.Target of the present invention and other advantages can realize and obtain through following specification and claims.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is made further detailed description below, wherein:
Fig. 1 is a planar structure half-sectional view of the present invention;
Fig. 2 is stereochemical structure compound section figure of the present invention;
Fig. 3 is the full profile of stator stereochemical structure of the present invention;
Fig. 4 is a driving wheel perspective view of the present invention;
Fig. 5 is a driven pulley perspective view of the present invention.
More than among the figure: 1. power shaft; 2. front end housing; 3. stator core; 4. stator permanent magnet piece; 5. ferromagnetic grid; 6. driving wheel permanent magnet blocks; 7. driving wheel wheel body; 8. the back connection end cap of driven pulley; 9. rear end cap; 10. output shaft; 11a-11d is respectively rolling bearing I-IV; 12. middle casing.
Symbol logo among the figure: the permanent magnet of N-polarity N; The permanent magnet of S-polarity S; The oblique air-gap field magnetic flux density of Bg-behind the ferromagnetic grid adjustable magnetic of driven pulley; Zg is the ferromagnetic grid magnetic conduction of the driven pulley grid number of teeth (also being the bellmouth number on the ferromagnetic grid); n
r-driving wheel rotating speed; n
g-secondary speed; 2p
r-driving wheel permanent magnet distribution number of poles; 2p
s-stator permanent magnet distribution number of poles.
Embodiment
Below will carry out detailed description to the preferred embodiments of the present invention with reference to accompanying drawing.Should be appreciated that preferred embodiment has been merely explanation the present invention, rather than in order to limit protection scope of the present invention.
Embodiment illustrated in fig. 1 is the planar structure half-sectional view of the magnetic transmission helical gear pair of a kind of oblique air-gap field of the present invention, and Fig. 2 is the stereochemical structure compound section figure of the magnetic transmission helical gear pair of a kind of oblique air-gap field of the present invention.This helical gear pair has comprised stator, driving wheel and driven pulley, and its internal structure relationship characteristic is following:
Stator is a core structure; Stator core 3 is provided with the inner chamber of a perforation vertically, and inner chamber is inner conical, and the inner surface of inner chamber is provided with the stator permanent magnet piece 4 of a plurality of radial arrangements vertically; Stator permanent magnet piece 4 is provided with the N utmost point and the extremely spaced mode of S, and total number of pole-pairs is p
rIn the present embodiment, stator core is in aggregates and make through striking out sheet and laminating rivet welding by the silicon steel plate of magnetic conduction.
Driven pulley comprise preceding adapter sleeve 15, back connect end cap 8 and be arranged on before adapter sleeve with after be connected the ferromagnetic grid 5 between the end cap; The external shape of ferromagnetic grid 5 is the cylindrical taper with the inner chamber conformal of stator; The inside of ferromagnetic grid is the cavity body structure that is inner conical; Evenly be provided with a plurality of tapered hole 51 that distribute radially on the conical surface of ferromagnetic grid vertically; The quantity of tapered hole 51 is Zg, and the cylindrical that the back connects end cap 8 is that tight fit is connected with the big end of ferromagnetic grid 5, and the center that the back connects end cap 8 outwards vertically is provided with an output shaft 10; In the present embodiment, the ferromagnetic grid of driven pulley by the sheet metal of magnetic conduction through striking out sheet, the tapered funnel shaped of drawn again, it is in aggregates that multi-disc laminates rivet welding, after metal cutting shape; Simultaneously, back connection end cap and output shaft are welded into a whole.
Driving wheel comprise successively the power shaft 1 that connects, with the cylindrical taper wheel body 7 and the connecting axle of ferromagnetic grid internal cavity structure conformal; The surface of wheel body is provided with the driving wheel permanent magnet blocks 6 of a plurality of radial arrangements vertically; Driving wheel permanent magnet blocks 6 is provided with the N utmost point and the extremely spaced mode of S, and total number of pole-pairs is p
s, number of pole-pairs p
sAnd p
rThe positive integer that is an odd number, an even number is right; In the present embodiment, the wheel body of driving wheel laminates through striking out sheet that rivet welding is in aggregates to be made by the silicon steel plate of magnetic conduction.
The preceding adapter sleeve 15 of driven pulley is connected on the power shaft of driving wheel through bearing I II 11c; The connecting axle of driving wheel is connected with the back end cap 8 that is connected of driving wheel with concentric manner through bearing I V 11d; The wheel body of driving wheel is contained in the internal cavity structure of ferromagnetic grid of driven pulley; Between bore of stator and the ferromagnetic grid, and do not contact mutually between the wheel body of ferromagnetic grid and driving wheel and the big small end of the outside conical surface of three towards identical; In the present embodiment, the inner hole sleeve of bearing I II 11c is gone into the power shaft of driving wheel and integrally welded; The external toroidal ring of bearing I V 11d with after to be connected end cap integrally welded.
Driving wheel permanent magnet blocks 6 is oppositely arranged with stator permanent magnet piece 4, constitutes the air-gap field of magnetic transmission helical gear pair jointly, and this magnetic field sees through the bellmouth of ferromagnetic grid, and air gap passes and forms the oblique magnetic field of magnetic transmission helical gear pair from the space.
As further improvement, magnetic transmission helical gear pair comprises that also two ends are provided with the shell body of input, output shaft interface channel, and said stator, driving wheel and driven pulley all are arranged in the shell body.In the present embodiment; Shell body comprises front end housing 2, rear end cap 9 and the middle casing 12 that is connected with the cylindrical of forward and backward end cap; Be respectively arranged with input, output shaft interface channel and on two interface channels, be respectively arranged with bearing I 11a and bearing I I 11b on the center of front end housing 2 and rear end cap 9; The power shaft 1 of driving wheel sees through bearing I 11a and fixes, and the output shaft of driven pulley is fixed through bearing I I 11b.
In the present embodiment, following constraints is arranged:
1. the rotation speed n of the power shaft on the driving wheel 1
r, the output shaft 10 on the driven pulley rotation speed n
g, the magnetic conduction grid tooth number Z g of the ferromagnetic grid 5 of driven pulley, the number of pole-pairs p of driving wheel permanent magnet 6
r, stator permanent magnet 4 number of pole-pairs p
sSatisfy following relation constraint, and number of pole-pairs p
sAnd p
rThe positive integer that is an odd number, an even number is right:
2. pass through the input torque T of power shaft 1
r, from the moment T of output shaft 10 output
g, magnetic transmission helical gear pair transmission efficiency η satisfy following relation constraint, transmission efficiency η is greater than 90% with less than the positive percentage between 100%:
As a preferred embodiment, the parameter of choosing among the present invention as follows: the driving wheel number of magnetic poles is 2p
r=4 utmost points, stator magnet number of poles are 2p
s=34 utmost points, the ferromagnetic grid magnetic conduction of driven pulley grid tooth number Z g=19, rotating speed gearratio
Of the present invention having wide range of applications, and can form multiple systems through routine techniques, can constitute the multi-change speed drive system as the magnetic gear pair being carried out multipole d-axis series connection.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. the magnetic transmission helical gear pair of an oblique air-gap field, it is characterized in that: said helical gear pair comprises
Stator; Said stator is provided with the inner chamber of a perforation vertically, and said inner chamber is inner conical, and the surface of said inner chamber is provided with the stator permanent magnet piece of a plurality of radial arrangements vertically; Said stator permanent magnet piece is provided with the N utmost point and the extremely spaced mode of S, and total number of pole-pairs is p
r
Driven pulley; Said driven pulley comprise preceding adapter sleeve, back connect end cap and be arranged on before adapter sleeve with after be connected the ferromagnetic grid between the end cap; The external shape of said ferromagnetic grid is the cylindrical taper with the inner chamber conformal of stator; The inside of said ferromagnetic grid is the cavity body structure that is inner conical, evenly is provided with a plurality of tapered hole that distribute radially on the conical surface of said ferromagnetic grid vertically, is Zg magnetic conduction grid tooth that plays the magnetic conduction effect between the tapered hole; The cylindrical that said back connects end cap is that tight fit is connected with the big end of ferromagnetic grid, and the center that said back connects end cap outwards vertically is provided with an output shaft;
Driving wheel; Said driving wheel comprise successively the power shaft that connects, with the cylindrical taper wheel body and the connecting axle of ferromagnetic grid internal cavity structure conformal; The surface of said cylindrical taper wheel body is provided with the driving wheel permanent magnet blocks of a plurality of radial arrangements vertically; Said driving wheel permanent magnet blocks is provided with the N utmost point and the extremely spaced mode of S, and total number of pole-pairs is p
s, said number of pole-pairs p
sAnd p
rThe positive integer that is an odd number, an even number is right;
The preceding adapter sleeve of said driven pulley is connected on the power shaft of driving wheel through bearing I II; The connecting axle of said driving wheel is connected with the back end cap that is connected of driving wheel with concentric manner through bearing I V; The wheel body of said driving wheel is contained in the internal cavity structure of the ferromagnetic grid of driven pulley; Between said bore of stator and the ferromagnetic grid, and do not contact mutually between the wheel body of ferromagnetic grid and driving wheel and the big small end of the outside conical surface of three towards identical;
Said driving wheel permanent magnet blocks and stator permanent magnet piece are oppositely arranged, and constitute the air-gap field of magnetic transmission helical gear pair jointly, and this magnetic field sees through the bellmouth of ferromagnetic grid, and air gap passes and forms the oblique magnetic field of magnetic transmission helical gear pair from the space.
2. the magnetic transmission helical gear pair of oblique air-gap field according to claim 1 is characterized in that: the magnetic conduction grid tooth number Z g of the ferromagnetic grid of said driven pulley (5), number of pole-pairs p
r, number of pole-pairs p
sSatisfy following relation constraint:
Zg＝p
r+p
s。
3. the magnetic transmission helical gear pair of oblique air-gap field according to claim 1 and 2; It is characterized in that: said magnetic transmission helical gear pair comprises that also two ends are provided with the shell body of input, output shaft interface channel, and said stator, driving wheel and driven pulley all are arranged in the shell body.
4. the magnetic transmission helical gear pair of oblique air-gap field according to claim 3; It is characterized in that: said shell body comprises front end housing, rear end cap and the middle casing that is connected with the cylindrical of forward and backward end cap; Be respectively arranged with input, output shaft interface channel on the center of said front end housing and rear end cap and on two interface channels, be respectively arranged with bearing I and bearing I I; The power shaft of said driving wheel sees through bearing I and fixes, and the output shaft of said driven pulley is fixed through bearing I I.
5. the magnetic transmission helical gear pair of oblique air-gap field according to claim 1, it is characterized in that: the internal structure of said stator is a core structure.
6. the magnetic transmission helical gear pair of oblique air-gap field according to claim 5 is characterized in that: the core structure of stator is in aggregates through striking out sheet and laminating rivet welding by the silicon steel plate of magnetic conduction.
7. the magnetic transmission helical gear pair of oblique air-gap field according to claim 1, it is characterized in that: the wheel body of said driving wheel is a core structure.
8. the magnetic transmission helical gear pair of oblique air-gap field according to claim 7; It is characterized in that: the ferromagnetic grid of said driven pulley by the sheet metal of magnetic conduction through striking out sheet; The tapered funnel shaped of drawn again, it is in aggregates that multi-disc laminates rivet welding, after metal cutting shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210046067XA CN102647069A (en) | 2012-02-27 | 2012-02-27 | Magnetic transmission bevel gear pair with inclined air gap field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210046067XA CN102647069A (en) | 2012-02-27 | 2012-02-27 | Magnetic transmission bevel gear pair with inclined air gap field |
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| Publication Number | Publication Date |
|---|---|
| CN102647069A true CN102647069A (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210046067XA Pending CN102647069A (en) | 2012-02-27 | 2012-02-27 | Magnetic transmission bevel gear pair with inclined air gap field |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829153A (en) * | 2011-06-14 | 2012-12-19 | 余虹锦 | Novel magnetic drive oblique gear pair with oblique air-gap magnetic field |
| CN202719103U (en) * | 2012-02-27 | 2013-02-06 | 重庆大学 | Magnetic transmission helical gear pair |
-
2012
- 2012-02-27 CN CN201210046067XA patent/CN102647069A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829153A (en) * | 2011-06-14 | 2012-12-19 | 余虹锦 | Novel magnetic drive oblique gear pair with oblique air-gap magnetic field |
| CN202719103U (en) * | 2012-02-27 | 2013-02-06 | 重庆大学 | Magnetic transmission helical gear pair |
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Application publication date: 20120822 |