CN104811000B - A kind of permanent-magnet speed governor - Google Patents
A kind of permanent-magnet speed governor Download PDFInfo
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- CN104811000B CN104811000B CN201510177894.6A CN201510177894A CN104811000B CN 104811000 B CN104811000 B CN 104811000B CN 201510177894 A CN201510177894 A CN 201510177894A CN 104811000 B CN104811000 B CN 104811000B
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Abstract
The invention discloses a kind of permanent-magnet speed governor, conductor rotor, p-m rotor and conductive magnetic yoke including tubular, the conductor rotor, the p-m rotor and the conductive magnetic yoke are coaxially disposed, the p-m rotor is located at the inner chamber of the conductor rotor, radial air gap is provided between the p-m rotor and the conductor rotor, the conductive magnetic yoke is located at the outside of the p-m rotor, the conductive magnetic yoke is axially movable, and the magnetic field intensity of adjustment radial air gap is realized by adjusting distance between the conductive magnetic yoke and the p-m rotor.Torque and rotating speed are adjusted by mobile conductive magnetic yoke, the more traditional tubular permanent-magnet speed governor of required axial space is substantially reduced, and conductive magnetic yoke only needs the active force of very little just can adjust the size of radial air gap magnetic flux, solve the problems, such as that traditional tubular permanent-magnet speed governor axial space takes that larger and speed adjusting gear is complicated and active force is big.
Description
Technical field
The present invention relates to a kind of driven speed regulating, and in particular to a kind of permanent-magnet speed governor.
Background technology
In the industries such as large-scale mining, petrochemical industry, electric power and metallurgy, due to the needs of energy-conserving and environment-protective, permanent magnetic speed-adjusting dress
The application put more and more extensively is sent out.Permanent magnet speed regulation device adapts to various adverse circumstances, including voltage ripple of power network is big, harmonic wave is tight
The place such as heavy, inflammable and explosive, moist, dust, can on-line control load rotating speed, to meet running needs, realize
Variable speed energy saving, fractional energy savings 10%~65%.
Existing permanent-magnet speed governor mainly has tubular permanent-magnet speed governor and desk permanent-magnet speed regulator, and tubular speed regulator is by regulation
Tubular p-m rotor and tubular conductor rotor axis direction relative position, to change p-m rotor and conductor rotor coupling
Live part, and then torque is adjusted, this larger axial space just needed between p-m rotor and conductor rotor in favor of entering
The movement of row to axial；And desk permanent-magnet speed regulator is entered by adjusting the air gap between dish type p-m rotor and conductor rotor
The regulation of row torque, and then realize the speed governing to load.It is also required to the regulation that larger axial space has carried out air gap.So exist
The place of some limited spaces is difficult to apply.
The content of the invention
It is an object of the invention to provide a kind of permanent-magnet speed governor, its by adjust the conductive magnetic yoke 6 and p-m rotor 4 it
Between distance adjust the magnetic field intensity of radial air gap, realize torque and the regulation of speed.
To use following technical scheme up to this purpose, the present invention：
A kind of permanent-magnet speed governor, including the conductor rotor of tubular, p-m rotor and conductive magnetic yoke, it is the conductor rotor, described
P-m rotor and the conductive magnetic yoke are coaxially disposed, and the p-m rotor is located at the inner chamber of the conductor rotor, the p-m rotor
Radial air gap is provided between the conductor rotor, the conductive magnetic yoke is located at the outside of the p-m rotor, the conductive magnetic yoke
It is axially movable, realizes that the magnetic field of adjustment radial air gap is strong by adjusting distance between the conductive magnetic yoke and the p-m rotor
Degree.
Wherein, in addition to drive shaft and driven shaft, the drive shaft are fixedly and coaxially connected with the conductor rotor, it is described from
Moving axis is fixedly connected through the center of the p-m rotor and with the p-m rotor.
Wherein, in addition to fixed cover is located at the screw set of the driven shaft, and the screw set and the driven shaft are contactless,
The conductive magnetic yoke is movably arranged on the screw set.
Wherein, the conductive magnetic yoke is provided with the annular groove coaxial with the conductive magnetic yoke close to one end of the p-m rotor.
Wherein, when the conductive magnetic yoke is moved close to the p-m rotor direction, the conductive magnetic yoke and the p-m rotor
Between minimum range be 0.1~0.3mm, preferably 0.15mm, when the conductive magnetic yoke is moved away from the p-m rotor direction
When, the conductive magnetic yoke and the ultimate range of the p-m rotor are 15~25mm, preferably 20mm.
Wherein, the conductor rotor is tubular rotor made of steel, and the conductor rotor inner circumferential is provided with conductor loop；It is described forever
Magnet rotor is internally provided with tangential permanent magnet body groove, and the first permanent magnetic steel, two neighboring institute are provided with the tangential permanent magnet body groove
The magnetic pole for stating relative two faces of the first permanent magnetic steel is identical.
Preferably, the coaxial magnetism-collected structure in addition to p-m rotor, the magnetism-collected structure are arranged at the p-m rotor
Inner side, the magnetism-collected structure includes the poly- magnetic conductance disk of the second permanent magnetic steel and end, and second permanent magnetic steel is positioned at described
Between the poly- magnetic conductance disk of p-m rotor and the end, second permanent magnetic steel corresponds with first permanent magnetic steel,
Second permanent magnetic steel is identical with the magnetic pole of corresponding first permanent magnetic steel.
Wherein, the conductor loop is the conductor loop of copper material or aluminium material.
Wherein, pin is passed through between the poly- magnetic conductance disk in the end, second permanent magnetic steel and the p-m rotor
Connection.
Wherein, the conductor rotor is fixedly connected by pin with the drive shaft, the p-m rotor with it is described driven
Axle is interference fit.
Compared with prior art, beneficial effects of the present invention are：A kind of permanent-magnet speed governor, including the conductor rotor of tubular,
P-m rotor and conductive magnetic yoke, the conductor rotor, the p-m rotor and the conductive magnetic yoke are coaxially disposed, the p-m rotor position
Radial air gap, the conductive magnetic yoke are provided between the inner chamber of the conductor rotor, the p-m rotor and the conductor rotor
Positioned at the outside of the p-m rotor, the conductive magnetic yoke is axially movable, by adjusting the conductive magnetic yoke and the p-m rotor
Between distance realize adjustment radial air gap magnetic field intensity.Moved axially by adjusting conductive magnetic yoke along driven shaft, to carry out permanent magnetism
Speed regulator transmits torque and the regulation of rotating speed, and the more traditional tubular permanent-magnet speed governor of required axial space is substantially reduced, moreover, leading
Yoke only needs the active force of very little just to adjust the magnetic flux by radial air gap, it is not necessary to as traditional permanent-magnet speed governor is by movement
Whole p-m rotor carries out the regulation of magnetic flux, solves traditional tubular permanent-magnet speed governor axial space and takes larger and speed adjusting gear
The problem of complicated.The structure of the permanent-magnet speed governor of the present invention is simpler, compact, and magnetic flux is more easily adjusted.Maintaining like
External form size under, higher moment of torsion can be transmitted, repeatable, adjustable, controllable output torque can be realized and turned
Speed, realize the purpose of variable speed energy saving.
Brief description of the drawings
Fig. 1 is the structural representation of the permanent-magnet speed governor of the embodiment of the present invention one.
Fig. 2 is the viewgraph of cross-section of the permanent-magnet speed governor of the embodiment of the present invention one.
Fig. 3 is the structural representation of the permanent-magnet speed governor of the embodiment of the present invention two.
Fig. 4 is the magnetism-collected structure schematic diagram of the permanent-magnet speed governor of the embodiment of the present invention two.
In figure：
1- drive shafts；2- driven shafts；3- conductor rotors；4- p-m rotors；5- screw sets；6- conductive magnetic yokes；7- conductor loops；8-
Tangential permanent magnet body groove；The permanent magnetic steels of 9- first；The poly- magnetic conductance disk in 10- ends；The permanent magnetic steels of 11- second.
Embodiment
1~4 and technical scheme is further illustrated by embodiment below in conjunction with the accompanying drawings.
Embodiment one
As shown in Fig. 1~2, a kind of permanent-magnet speed governor, including the conductor rotor 3 of tubular, p-m rotor 4 and conductive magnetic yoke 6, lead
Body rotor 3, p-m rotor 4 and conductive magnetic yoke 6 are coaxially disposed, and p-m rotor 4 is located at the inner chamber of conductor rotor 3, and p-m rotor 4 is with leading
Radial air gap is provided between body rotor 3, conductive magnetic yoke 6 is located on the screw set 5 in the outside of p-m rotor 4, screw set 5 and outside
Pedestal or support are connected, and conductive magnetic yoke 6 can axially move on screw set 5, by adjusting conductive magnetic yoke 6 and p-m rotor 4
Between distance realize the adjustment of radial air gap magnetic field intensity.Conductive magnetic yoke 6 refers to that itself does not produce magnetic field (magnetic line of force), in magnetic circuit
The simply soft magnetic materials of magnetize line of force transmission, the conductive magnetic yoke 6 in the present embodiment are collar plate shape, and its diameter is close to p-m rotor 4
External diameter.According to magnetic resistance minimum principle, the magnetic line of force always levels off to the minimum heat source of magnetic resistance by the way that therefore the present embodiment leads to
Cross setting conductive magnetic yoke 6, to establish smaller, the new magnetic flux path of the magnetic resistance of a magneto resistive ratio radial air gap magnetic circuit, i.e., magnetic flux from
The N poles of p-m rotor 4 are set out, and the S poles of p-m rotor 4 are returned to through p-m rotor 4, conductive magnetic yoke 6, by the magnetic of the magnetic flux path
The logical transmission for being not involved in torque, belongs to invalid magnetic flux；And pass through the magnetic of the radial air gap between conductor rotor 3 and p-m rotor 4
It is logical, the transmission of torque is participated in, is useful flux, by adjusting turning on and off by 6 newly-built magnetic flux path of conductive magnetic yoke, can be adjusted
Section passes through the useful flux size of radial air gap between conductor rotor 3 and p-m rotor 4, finally realizes the tune of torque and rotating speed
Section.
In the present embodiment, in addition to drive shaft 1 and driven shaft 2, drive shaft 1 is fixedly and coaxially connected with conductor rotor 3, driven
Axle 2 is fixedly connected through the center of p-m rotor 4 and with p-m rotor 4.Drive shaft 1 drives conductor rotor 3 to rotate, and cuts permanent magnetism
The magnetic line of force caused by rotor 4, produces eddy current in conductor loop 7, and eddy current produces induced field, produced with p-m rotor 4
Raw permanent magnetic field interaction, realizes the transmission of torque.
The present embodiment also include fixed cover be located at the driven shaft 2 screw set 5, screw set 5 be fixed on outer base or
On support, driven shaft 2 passes through from its endoporus, and both are coaxial and contactless, and conductive magnetic yoke 6 forms one group of lead screw pair with screw set 5, and
And can be movable along screw set 5, and then change the distance between conductive magnetic yoke 6 and p-m rotor, it is newly-established so as to change
The magnetic resistance size of magnetic circuit, regulation passes through the magnetic flux of the magnetic circuit, and then changes the radial direction gas between conductor rotor 3 and p-m rotor 4
The magnetic flux of gap, realize torque and the regulation of rotating speed.
In above-described embodiment, conductive magnetic yoke 6 can also moving axially back and forth along driven shaft 2, such as adopt by other means
The moving axially back and forth along driven shaft 2 of conductive magnetic yoke 6 is controlled with external gear, rack etc., and then adjusts the magnetic flux of radial air gap.
Conductive magnetic yoke 6 in the present embodiment is provided with the annular groove coaxial with conductive magnetic yoke 6 close to one end of p-m rotor 4, to keep away
Exempt to produce vortex flow on the end face of conductive magnetic yoke 6.Certainly, conductive magnetic yoke 6 can also use silicon-steel sheet coiled around into.
When conductive magnetic yoke 6 is moved close to the direction of p-m rotor 4, the minimum range between conductive magnetic yoke 6 and p-m rotor 4 is
0.1~0.3mm, preferably 0.15mm, when conductive magnetic yoke 6 is moved away from the direction of p-m rotor 4, conductive magnetic yoke 6 and p-m rotor 4
Ultimate range is 15~25mm, preferably 20mm.When conductive magnetic yoke 6 moves to the ultimate range, conductive magnetic yoke 6 and p-m rotor 4 it
Between air gap it is larger, the magnetic resistance of magnetic circuit is maximum, therefore, magnetic flux overwhelming majority the supply conductor rotor seldom by the magnetic flux of the magnetic circuit
Radial air gap magnetic field between 3 and p-m rotor 4, carries out the transmission of torque, and now torque is maximum；When conductive magnetic yoke 6 is slowly to forever
Magnet rotor 4 close to when, the air gap between conductive magnetic yoke 6 and p-m rotor 4 slowly diminishes, and the magnetic resistance of newly-established magnetic circuit gradually becomes
It is small, increased gradually by the magnetic flux of the magnetic circuit, at the same time, there is provided to the radial air gap between conductor rotor 3 and p-m rotor 4
Magnetic flux slowly reduce, the torque transmitted also slowly is reduced therewith with rotating speed；When conductive magnetic yoke 6 is rotated to the minimum range, lead
Air gap between yoke 6 and p-m rotor 4 reaches minimum, and the magnetic resistance very little of the newly-established magnetic circuit, most magnetic flux is all
Closed by the magnetic circuit, there is provided the magnetic flux to the radial air gap between conductor rotor 3 and p-m rotor 4 is almost nil, now not
The transmission of torque, rotating speed zero are carried out again.
Conductor rotor 3 in the present embodiment is tubular rotor made of steel, is produced to further increase when conductor rotor 3 rotates
Eddy current current strength, and then strengthen caused by induced field, further effectively transmit torque, as the present embodiment
Preferred embodiment, the inner circumferential of conductor rotor 3 is provided with conductor loop 7；P-m rotor 3 is internally provided with tangential permanent magnet body groove
8, the first permanent magnetic steel 9, the magnetic pole in relative two faces of two neighboring first permanent magnetic steel 9 are provided with tangential permanent magnet body groove 8
It is identical.In the present embodiment, magnetic flux returns to the first permanent magnetism from the N poles of the first permanent magnetic steel 9 through p-m rotor 4, conductive magnetic yoke 6
The S poles of magnet steel 9, closed magnetic circuit is formed, this part magnetic flux is not involved in the transmission of torque, belongs to invalid leakage magnetic flux, and remaining is obstructed
The magnetic flux for crossing the magnetic circuit then largely supplies radial air gap magnetic field, carries out the transmission of torque.
Embodiment two
As shown in figs. 34, in order to further increase the permanent magnet flux of the offer of p-m rotor 4, the present embodiment is in above-mentioned implementation
Improved on the basis of example one.The present embodiment also includes the magnetism-collected structure coaxial with p-m rotor 4, and magnetism-collected structure is arranged at
The inner side of p-m rotor 4, magnetism-collected structure include the poly- magnetic conductance disk 10 of the second permanent magnetic steel 11 and end, the second permanent magnetic steel 11
Between the poly- magnetic conductance disk 10 of p-m rotor 4 and end, the second permanent magnetic steel 11 corresponds with the first permanent magnetic steel 9, and second
Permanent magnetic steel 11 is identical with the magnetic pole of corresponding first permanent magnetic steel 9.The poly- magnetic conductance disk 10 in end can be to the second permanent magnetic steel
11 are protected, and are rely and to be formed poly- magnetic flux closure loop.
In above-described embodiment one and embodiment two, conductor loop 7 is copper material or aluminium material conductor loop.Wherein aluminium material
Conductor loop is relatively cheap, but electric conductivity is poor, and the conductor loop electric conductivity of copper material is preferable, therefore, the present embodiment
It is preferred that the conductor loop of copper material.
Connected between the poly- magnetic conductance disk 10 in above-mentioned end, the second permanent magnetic steel 11 and p-m rotor 4 by pin.Lead
Body rotor 3 is connected to be fixed by pin with drive shaft 1, and p-m rotor 4 and driven shaft 2 are interference fit, with reduce from
When driving p-m rotor 4 to rotate play occurs for moving axis 2.
Working gas gap magnetic field is adjusted using a kind of round-about way by the present invention, that is, gives an other magnetic resistance more
Small magnetic circuit, and the magnetic flux path can easily be realized and turned on and off, and then realize to working gas gap magnetic field intensity
Regulation, turning on and off for magnetic circuit newly is established to adjust particular by mobile conductive magnetic yoke, and then realize air-gap field intensity
Regulation.Traditional tubular permanent-magnet speed governor is avoided by regulation p-m rotor and tubular conductor rotor in the relative position of axis direction
Put to adjust the live part of p-m rotor and conductor rotor coupling, it is not necessary to extra larger axial space, it also avoid multiple
Miscellaneous speed adjusting gear so that the structure of whole speed regulator is compacter, reasonable, and the transmission torque under same volume is significantly carried
It is high.
The above embodiment of the present invention is intended merely to clearly demonstrate example of the present invention, and is not to the present invention
Embodiment restriction.On the basis of above-described embodiment, just specific implementation structure other various forms of changes can also be done
Change, it is every to belong to obvious changes or variations that technical scheme amplifies out still in protection model of the invention
The row enclosed.
Claims (10)
- A kind of 1. permanent-magnet speed governor, it is characterised in that conductor rotor (3), p-m rotor (4) and conductive magnetic yoke (6) including tubular, The conductor rotor (3), the p-m rotor (4) and the conductive magnetic yoke (6) are coaxially disposed, and the p-m rotor (4) is located at institute The inner chamber of conductor rotor (3) is stated, radial air gap is provided between the p-m rotor (4) and the conductor rotor (3), it is described to lead Yoke (6) is located at the outside of the p-m rotor (4), and the conductive magnetic yoke (6) is axially movable, by adjusting the conductive magnetic yoke (6) distance realizes the magnetic field intensity of adjustment radial air gap between the p-m rotor (4).
- 2. permanent-magnet speed governor according to claim 1, it is characterised in that also including drive shaft (1) and driven shaft (2), institute State drive shaft (1) to be fixedly and coaxially connected with the conductor rotor (3), the driven shaft (2) is passed through in the p-m rotor (4) The heart and it is fixedly connected with the p-m rotor (4).
- 3. permanent-magnet speed governor according to claim 2, it is characterised in that be also located at the driven shaft (2) including fixed cover Screw set (5), the screw set (5) and the driven shaft (2) are contactless, and the conductive magnetic yoke (6) is movably arranged on the silk On thick stick set (5).
- 4. permanent-magnet speed governor according to claim 1, it is characterised in that the conductive magnetic yoke (6) is close to the p-m rotor (4) one end is provided with the annular groove coaxial with the conductive magnetic yoke (6).
- 5. permanent-magnet speed governor according to claim 1, it is characterised in that when the conductive magnetic yoke (6) turns close to the permanent magnetism During sub (4) direction motion, the minimum range between the conductive magnetic yoke (6) and the p-m rotor (4) is 0.1~0.3mm, works as institute When stating conductive magnetic yoke (6) away from the motion of the p-m rotor (4) direction, the conductive magnetic yoke (6) and the maximum of the p-m rotor (4) Distance is 15~25mm.
- 6. permanent-magnet speed governor according to claim 1, it is characterised in that the conductor rotor (3) is tubular rotor made of steel, In the conductor rotor (3), inner circumferential is provided with conductor loop (7)；The p-m rotor (4) is internally provided with tangential permanent magnet body groove (8) the first permanent magnetic steel (9), is provided with the tangential permanent magnet body groove (8), two neighboring first permanent magnetic steel (9) Magnetic pole with respect to two faces is identical.
- 7. permanent-magnet speed governor according to claim 6, it is characterised in that also include the poly- magnetic coaxial with p-m rotor (4) Structure, the magnetism-collected structure are arranged at the inner side of the p-m rotor (4), and the magnetism-collected structure includes the second permanent magnetic steel (11) Magnetic conductance disk (10) poly- with end, second permanent magnetic steel (11) are located at the p-m rotor (4) and the poly- magnetic conductance in the end Between disk (10), second permanent magnetic steel (11) corresponds with first permanent magnetic steel (9), the second permanent magnetic steel (11) it is identical with the magnetic pole of corresponding first permanent magnetic steel (9).
- 8. the permanent-magnet speed governor according to claim 6 or 7, it is characterised in that the conductor loop (7) is copper material or aluminium The conductor loop of material.
- 9. permanent-magnet speed governor according to claim 7, it is characterised in that the poly- magnetic conductance disk (10) in the end, described Connected between two permanent magnetic steels (11) and the p-m rotor (4) by pin.
- 10. permanent-magnet speed governor according to claim 2, it is characterised in that the conductor rotor (3) by pin with it is described Drive shaft (1) is fixedly connected, and the p-m rotor (4) is interference fit with the driven shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510177894.6A CN104811000B (en) | 2015-04-15 | 2015-04-15 | A kind of permanent-magnet speed governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510177894.6A CN104811000B (en) | 2015-04-15 | 2015-04-15 | A kind of permanent-magnet speed governor |
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| Publication Number | Publication Date |
|---|---|
| CN104811000A CN104811000A (en) | 2015-07-29 |
| CN104811000B true CN104811000B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510177894.6A Active CN104811000B (en) | 2015-04-15 | 2015-04-15 | A kind of permanent-magnet speed governor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911243B (en) * | 2017-03-20 | 2019-03-05 | 东南大学 | A kind of ring-like permanent-magnet eddy current speed regulation device of translation adjustable magnetic |
| CN108110992B (en) * | 2017-11-29 | 2019-10-11 | 东南大学 | A kind of ring-like built-in type permanent-magnet eddy speed regulating device of translation stator |
| CN107919786A (en) * | 2017-12-14 | 2018-04-17 | 沈阳航磁科技有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN115962243B (en) * | 2022-12-13 | 2023-11-07 | 华中科技大学 | Axial magnetic flux permanent magnet hysteresis damper with adjustable air gap |
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| US7990007B2 (en) * | 2004-03-01 | 2011-08-02 | Flux Drive, Inc. | Apparatus for transferring torque magnetically |
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| CN203457028U (en) * | 2013-09-11 | 2014-02-26 | 辽阳泰科雷诺科技有限公司 | Coaxial sleeve type permanent magnetic eddy current coupling employing magnet-gathering type magnetic circuit structure |
| CN104377933A (en) * | 2014-11-26 | 2015-02-25 | 西安巨舟电子设备有限公司 | Permanent magnet eddy current speed controller based on conjugated magnetic feed rotor |
| CN204615599U (en) * | 2015-04-15 | 2015-09-02 | 苏州威莫磁力传动技术有限公司 | A kind of permanent-magnet speed governor |
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- 2015-04-15 CN CN201510177894.6A patent/CN104811000B/en active Active
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| US7990007B2 (en) * | 2004-03-01 | 2011-08-02 | Flux Drive, Inc. | Apparatus for transferring torque magnetically |
| CN101931308A (en) * | 2009-06-22 | 2010-12-29 | 余亚莉 | Permanent magnet coupling device for cylindrical transmission shaft |
| CN203406767U (en) * | 2013-06-06 | 2014-01-22 | 林英楠 | Permanent magnetism speed regulation, brake or load apparatus with adjustable coupling magnetic flux |
| CN203457028U (en) * | 2013-09-11 | 2014-02-26 | 辽阳泰科雷诺科技有限公司 | Coaxial sleeve type permanent magnetic eddy current coupling employing magnet-gathering type magnetic circuit structure |
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Effective date of registration: 20210602 Address after: 102600 Room 403, unit 1, 15th floor, changfengyuan, Huangcun Town, Daxing District, Beijing Patentee after: Du Lihong Address before: No.558 FenHu Avenue, Lili Town, Wujiang District, Suzhou City, Jiangsu Province Patentee before: SUZHOU WEIMO MAGNETIC TRANSMISSION TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20211123 Address after: 710000 room a-116-126, No. 14, Gaoxin Second Road, Zhangba street, high tech Zone, Xi'an, Shaanxi Province Patentee after: Xi'an Zhengqi Energy Technology Co.,Ltd. Address before: 102600 Room 403, unit 1, 15th floor, changfengyuan, Huangcun Town, Daxing District, Beijing Patentee before: Du Lihong |
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