CN203457027U - Centrifugal-type magnetic drive device - Google Patents
Centrifugal-type magnetic drive device Download PDFInfo
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- CN203457027U CN203457027U CN201320530960.XU CN201320530960U CN203457027U CN 203457027 U CN203457027 U CN 203457027U CN 201320530960 U CN201320530960 U CN 201320530960U CN 203457027 U CN203457027 U CN 203457027U
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Abstract
The utility model discloses a centrifugal-type magnetic drive device. The device comprises a driving rotor and a driven rotor. The interior of the driven rotor is provided with a conductor ring. A cavity, which is disposed inside the driving rotor along the radial direction, is provided with a magnetic driving mechanism. The magnetic driving mechanism comprises a magnet, a spiral shaft, and a magnet reset spring. The magnet can rotate around the spiral shaft along a rail, and slides along the spiral shaft. A torque is adjusted in the process of rotating and sliding of the magnet. The N and S poles of the magnet are axially arranged in off working state. An eddy current, which is generated inside the conductor ring of the driven rotor, is the biggest after the rotation of 90 degrees or 270 degrees, and the transmission torque is also the biggest. In particular, a magnetic field is fully used when a three-sided conductor ring structure is employed, and the effect of transmission increases several times under the conditions of the same torques and weights. The device provided by the utility model needs no electrical control devices, automatically adjusts the torques, automatically achieves the adjustable soft start, is small in size, is large in torque, is small in heating quantity, is simple in structure, is neat in appearance, is compact in structure, and is long in service life of equipment.
Description
Technical field
The present invention relates to a kind of transmission device, relate in particular to a kind of with magnet driven unit device, relate in particular to and a kind ofly by magnet, rotate and radial distance is adjusted the device of transmitting torque size.Belong to dynamo-electric manufacturing technology field.
Background technology
Magnetic drive is due to advantages such as it is simple in structure, damping noise reduction, contactless transmission, selected by industrial enterprise more and more widely in recent years.In the power driven equipment of nearly all production and life, all can apply to transmission shaft coupling equipment.When general permanent magnet clutch carries out transmission of torque, because p-m rotor and conductor rotor fix in advance, therefore start moment, because input and output between centers speed discrepancy is very large, and magnetic field intensity is relatively constant, the instantaneous eddy current producing in conductor rotor is very large, and heating is serious, powerful shaft coupling even also needs the auxiliary temperature-reducing equipment such as water-cooled, and service life of equipment is relatively low.Even spacing is adjustable between p-m rotor and conductor rotor, but must have special-purpose actuator and controller to complete, mechanism's complex processing requirements is high, service life of equipment is short.And magnetic drive volume is large, dynamic balancing debugging difficulty is large, and the transmitting torque of generation is unstable, makes output shaft produce vibration, and equipment is caused to damage, even, production and life is brought to heavy losses.
At present, adopt the transmission device of magnet, generally select permanent magnet, magnetic field intensity is fixed, and can not make adjustment along with the variation of rotating speed and moment of torsion.For example in the Chinese invention patent application of publication number CN103023272A, disclose a kind of employing permanent magnet and realized eddy current Flexible Transmission shaft coupling, although, the active force radius of magnet changes to some extent, but magnetic field intensity does not change, during initial transmission, magnetic field is just very strong, operating radius is again little, torsion is with dynamic load to rotate rapidly not, so will work under this state for a long time, cause a large amount of heatings, make permanent magnet demagnetization, the weakness that exists transmitting torque to reduce, also because of its structures shape bipolar magnetic loop magnetic force far away naturally weaken, the instantaneous eddy current producing in conductor rotor reduces, effect also reduces, there is the shortcoming and defect that same volume transmitting torque is little, need root diameter to strengthen for this reason, magnet volume is also larger, distance between two poles is also larger, magnetic circuit stroke is long, the shortcoming and defect that exists magnetic force naturally to weaken, easily cause the waste of space and material.Especially when high rotation speed operation, centrifugal force will be larger, causes potential destructive factor, also can make the conductor loops moment generation amount of heat in slave unit, thereby cause demagnetization to be scrapped.
Therefore, need a kind of adjustment to active force between driving and slave unit, actuator and electric controller that need not be special-purpose complete, and can enough self structure features effectively complete adjustment process, comprising: the active force radius of magnetic field intensity and magnet.Simultaneously, reduce the wearing and tearing between various drive disk assemblies, while making initial transmission a little less than magnetic force, with the increase of the raising power output of rotating speed, magnetic force strengthens gradually, and active force radius also can strengthen accordingly, make the input and output of the power state that tends to balance, so just reduced excessive the produced a large amount of heat of transmission differential, made transmission more steady, and need between input and output rotor, accurately not aim at.
Summary of the invention
For overcoming the deficiencies in the prior art, the present invention discloses a kind of centrifugal magnetic drive, aim to provide the transmission device that a kind of spatial position change with magnet regulates transmitting torque, between driving and slave unit, without additional control, can automatically adjust magnetic field intensity, when realizing flexibility starting, further improve differential starting numerical value.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of centrifugal magnetic drive, comprise driving rotor for connecting power shaft, for connecting the driven rotor of output shaft, drive in rotor and have some cavitys of radially offering, these cavitys are uniformly distributed around the drives rotor shaft heart, magnetic driving mechanism is located in cavity, is provided with conductor loops in driven rotor;
Wherein, magnetic driving mechanism comprises magnet, spiral bobbin and magnet back-moving spring, the spiral bobbin that is placed in cavity is fixedly connected with driving rotor, and spiral bobbin is provided with spiral track, and magnet can rotate and be in axial sliding along spiral bobbin around spiral bobbin along this track; Drive rotor when non operating state, the magnet N utmost point and the S utmost point are by the axially-aligned that drives rotor.
In force, further can do following improvement:
Magnet is the magnet of diametrical magnetization;
In cavity, around magnet both sides, be provided with leading pole;
During non operating state, the conductor loops of driven rotor radially misplaces and arranges with magnet, and when initial condition, the two operating radius and active area are minimum; During operating state, along with magnet radially slides in driving rotor, the operating radius of the two and active area increase;
On driving rotor, between two adjacent cavitys, drive rotor body to be axial depression or engraved structure;
Driven rotor adopts and surrounds the cage construction that drives rotor, and is all establishing conductor loops near the both sides of driving rotor; Further, in driven rotor, the side corresponding with magnet outer face is also provided with conductor loops;
In magnet inner side, be provided with the container cavity of magnet back-moving spring; Drive rotor, in centrifugal action lower magnet sliding process, magnet back-moving spring is extruded and is accommodated in container cavity;
Magnet material can be selected ferrite or rare earth permanent-magnetic material; The metal that conductor loops material selection conducts electricity very well, as copper or aluminium.
The course of work of centrifugal magnetic drive is as follows:
When centrifugal magnetic drive is during in non operating state, drive rotor not rotate, under the effect of magnet back-moving spring, magnet in cavity is in the initial position near the drives rotor shaft heart, the magnet N utmost point and the S utmost point are by the axially-aligned that drives rotor, the magnetic line of force forms the closed circuit magnetic line of force through leading pole, and now minimum through the conductor loops magnetic line of force in driven rotor, the magnetic field that also affects conductor loops is the most weak, when this centrifugal magnetic drive is in running order, drive rotor startup, along with driving rotor speed to improve gradually, the centrifugal force that acts on magnet increases thereupon, magnet slides and rotates around spiral bobbin along spiral bobbin, on the one hand, magnet radially slides in process along driving rotor, magnet increases conductor loops active force radius, on the other hand, in the magnet N utmost point and S utmost point rotary course, the magnetic line of force and magnetic direction are changed thereupon, when magnet 90-degree rotation or 270 is spent, now, maximum through the conductor loops magnetic line of force in driven rotor, the eddy current producing in driven rotor conductor loops is maximum, the driving torque producing is maximum.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention has realized in the situation without external control mechanism, automatically adjusts moment of torsion, real realizes without electrical control device, realizes the transmission device of automatic adjustable soft start.Its axial mounting distance is short, less than 1/2nd of existing adjusting torque magnetic drive.Compare with existing device, little in same torque condition lower volume, under same weight condition, moment of torsion is large.When little torque drive, than the little several times of prior art, when high pulling torque transmission, than existing large several times; Especially in the situation that three conductor loops produce eddy current simultaneously, realized three-dimensional transmission, effect is more obvious.The present invention has advantages of that volume is little, moment of torsion is large, it is little, simple and compact for structure to generate heat, appearance neat, can automatically adjust moment of torsion, and salable installation, the dustproof wearing and tearing that reduce moving component, extension device useful life.Unique outer toroid conductor and the structure of the 3rd twisting force face, after having utilized dexterously magnet centrifugal radial to move outward, magnetic field is while 90-degree rotation or 270 degree also, the N of magnet and S pole field obtain the cutting of cylindrical conductor loops like this, outer toroid produces eddy resistance, just produced non-general two sides active force, the 3rd outer toroid active force structure, guaranteed that same volume moment of torsion is large, utilization due to three magnetic fields, save precious magnetic aptitude source, utilized three magnetic field structures as long as adopt ferrite magnetic material, just can reach the driving torque of neodymium iron boron one side.
Accompanying drawing explanation
Fig. 1 drives rotor structure cross-sectional schematic
Fig. 2 drives rotor and driven rotor structure cross-sectional schematic along A-A
Fig. 3 magnetic driving mechanism assembly schematic diagram
During Fig. 4 non operating state, along B-B, drive the cross-sectional schematic of rotor
During Fig. 5 magnet 90-degree rotation operating state, along B-B, drive the cross-sectional schematic of rotor
In Fig. 6 the 2nd embodiment, drive rotor and driven rotor structure cross-sectional schematic
In Fig. 7 the 2nd, 3 embodiment, along B-B, drive rotor cross-sectional schematic
Three schematic diagrames that all have conductor loops of driven rotor in Fig. 8 the 3rd embodiment
Fig. 9 has the schematic diagram of the magnet of magnet back-moving spring container cavity
Figure 10 driven rotor schematic diagram
In figure: 1-drives rotor, 2-cavity, 3-magnet, 4-spiral bobbin, 5-magnet back-moving spring, 6-leading pole, 7-plug bracing strut, 8-hollow part, 9-magnet back-moving spring container cavity, 10-driven rotor, 11-conductor loops, 12-cylindrical conductor loops.
Embodiment
Below, the embodiment of centrifugal magnetic drive is further described.
Centrifugal magnetic drive, comprise driving rotor for connecting power shaft, for connecting the driven rotor of output shaft, drive in rotor and have some cavitys of radially offering, these cavitys are uniformly distributed around the drives rotor shaft heart, magnetic driving mechanism is located in cavity, is provided with conductor loops in driven rotor.
The critical component of this centrifugal magnetic drive is: be arranged on the magnetic driving mechanism in cavity.
Magnetic driving mechanism comprises magnet, spiral bobbin and magnet back-moving spring, the spiral bobbin that is placed in cavity is fixedly connected with driving rotor, spiral bobbin is provided with spiral track, and magnet can rotate and be in axial sliding along spiral bobbin around spiral bobbin along this track; Drive rotor when non operating state, the magnet N utmost point and the S utmost point are by the axially-aligned that drives rotor.
Its operation principle and process: referring to accompanying drawing 2, when the initial condition of centrifugal magnetic drive in inoperative, drive rotor 1 not rotate, under the effect of magnet back-moving spring 5, the magnet 3 in cavity 2 is near drives rotor shaft heart initial position; Referring to accompanying drawing 4, the N utmost point and the S utmost point of magnet 3 are axially-aligned, and, by driving the axis direction of rotor to arrange, the magnetic line of force forms the closed circuit magnetic line of force through leading pole 6, and now minimum through the conductor loops magnetic line of force in driven rotor 10, the magnetic field that affects conductor loops 11 is the most weak.When this centrifugal magnetic drive enters operating state, drive rotor 1 to start, along with driving rotor 1 rotating speed to improve gradually, the centrifugal force that acts on magnet 3 increases thereupon, back-moving spring 5 is compressed, magnet 3 slides and rotates around helical track axle 4 along helical track axle 4, referring to 3 pole orientation of magnet in Fig. 5 and position, meanwhile, magnet 3 is along driving radially sliding of rotor, magnet 3 increases with conductor loops 11 active force radiuses, on the one hand, in the magnet N utmost point and S utmost point rotary course, the magnetic line of force and magnetic direction are changed thereupon, when magnet 3 90-degree rotations or 270 are spent, now, maximum through conductor loops 11 magnetic lines of force in driven rotor 10, the eddy current producing in conductor loops 11 in driven rotor 10 is maximum, the driving torque producing is maximum.Reached minimum driving torque than the little several times of existing magnetic drive, in the time of large than existing large several times object.During three-dimensional transmission, effect is more obvious.
Now enumerate three kinds of preferably specific embodiments, but be not limited to following three kinds of execution modes:
The embodiment 1 one side kind of drive
Referring to the structure representing in Fig. 1,2,3,4,5 and 10.
A kind of centrifugal magnetic drive, comprise driving rotor 1 for connecting power shaft, for connecting the driven rotor 10 of output shaft, drive in rotor Fig. 1 and have some cavitys of radially offering 2, these cavitys 2 are uniformly distributed around the drives rotor shaft heart, magnetic driving mechanism assembly is arranged in cavity 2, in driven rotor 10, be provided with conductor loops 11, the metal that conductor loops material selection conducts electricity very well, as copper or aluminium.Referring to Fig. 3, wherein, magnetic driving mechanism assembly comprises: magnet 3, spiral bobbin 4 and magnet back-moving spring 5, the one end that is placed in the spiral bobbin 4 of cavity 2 adopts engage thread to be fixedly connected with driving rotor 1, the other end of spiral bobbin 4 is fixed on driving rotor by plug bracing strut 7, the magnet that magnet 3 is diametrical magnetization, magnet material is selected ferrite or rare earth permanent-magnetic material.Spiral bobbin 4 is provided with spiral track, and magnet 3 can rotate and be in axial sliding along spiral bobbin around spiral bobbin 4 along this track.
The conductor loops of driven rotor radially misplaces and arranges with magnet, and when initial condition, the two operating radius and active area are minimum; During operating state, along with magnet radially slides in driving rotor, the operating radius of the two and active area increase.
For improving the utilization in magnet 3 magnetic fields, in cavity, around magnet both sides, be provided with leading pole 6.
For alleviating the weight that drives rotor body, on driving rotor, between two adjacent cavitys, drive rotor body to be axial depression or engraved structure, hollow part 8.
In work, drive rotor 1 to rotate under the drive of power source, magnet 3 produces centrifugal force and moves outward, be subject to the helical track guiding on 4 helical track axles simultaneously and rotate, referring to Fig. 4,5, make magnet 3 rotations, make conductor loops 11 in driven rotor 10 produce 10 rotations of eddy resistance drive driven rotor, reach the object of contactless Flexible Transmission, the simplest volume of this apparatus structure is little, generally can be used in the drive apparatus of little moment of torsion.
Referring to the structure representing in Fig. 1,6 and 7.
On the basis of the basic structure of embodiment 1, further, in driven rotor 10, be provided with two-conductor ring 11, driven rotor 10 adopts and surrounds the cage construction that drives rotors 1, in driven rotor 10, and near driving two sides of rotor 1 all establishing conductor loops; Ginseng Fig. 6, and leading pole 6 is two-way openings, can make the conductor loops of 10 two sides of driven rotor all produce eddy resistance, compared with the 1st embodiment moment of torsion, increase approximately one times, and reach the object of contactless Flexible Transmission, the simple volume of this apparatus structure is little, moment of torsion is larger, generally can be used in the drive apparatus of middle moment of torsion.
3 three kinds of drive of embodiment
Referring to the structure representing in Fig. 1,7 and 8.
On the basis of embodiment 2, in order to make full use of the magnetic field of magnet 3, the present embodiment is for the magnetic field along driving rotor radial, magnet 3 outer faces, further, in driven rotor 10 except two-sided conductor loops 11, side corresponding with magnet 3 outer faces in driven rotor is also provided with conductor loops, and cylindrical conductor loops 12; Referring to Fig. 9, in magnet 3 inner sides, be provided with the container cavity 9 of magnet back-moving spring; Drive rotor 1 rotation, in centrifugal action lower magnet 3 sliding processes, magnet back-moving spring 5 is extruded and is accommodated in container cavity 9; Magnet 3 outer ends can be dwindled with cylindrical conductor loops 12 spacing, more effectively utilized magnetic field.
When magnet 3 produces under the effect of centrifugal force when driving-disc 10 rotates, radially outward move to driving-disc 10 outward flanges, make the magnetized magnet 3 outer end magnetic lines of force of warp-wise and 12 effects of cylindrical conductor loops produce eddy resistance, in addition two-sided conductor loops 11 in driven rotor 10, three direction faces all can produce eddy resistance, compared with the 1st embodiment moment of torsion, approximately increase twice, and reach the object of contactless Flexible Transmission, this apparatus structure also uncomplicated volume is little, dynamic balancing easily guarantees, moment of torsion is maximum, the increasing of same space moment of torsion, reduced installing space, generally can be used in the drive apparatus of high pulling torque.
The foregoing is only better possible embodiments of the present invention, not thereby limit to the scope of the claims of the present invention, therefore the equivalent structure that every utilization description of the present invention is done changes, be all contained in protection scope of the present invention.
Claims (10)
1. a centrifugal magnetic drive, comprise driving rotor for connecting power shaft, for connecting the driven rotor of output shaft, drive in rotor and have some cavitys of radially offering, these cavitys are uniformly distributed around the drives rotor shaft heart, magnetic driving mechanism is located in cavity, is provided with conductor loops in driven rotor; It is characterized in that, magnetic driving mechanism comprises magnet, spiral bobbin and magnet back-moving spring, the spiral bobbin that is placed in cavity is fixedly connected with driving rotor, and spiral bobbin is provided with spiral track, and magnet can rotate and be in axial sliding along spiral bobbin around spiral bobbin along this track; Drive rotor when non operating state, the magnet N utmost point and the S utmost point are by the axially-aligned that drives rotor.
2. centrifugal magnetic drive according to claim 1, is characterized in that, in cavity, around magnet both sides, is provided with leading pole.
3. centrifugal magnetic drive according to claim 1, is characterized in that, during non operating state, the conductor loops of driven rotor is radially arranged with magnet dislocation.
4. centrifugal magnetic drive according to claim 1, is characterized in that, the magnet that magnet is diametrical magnetization.
5. centrifugal magnetic drive according to claim 1, is characterized in that, on driving rotor, between two adjacent cavitys, drives rotor body to be axial depression or engraved structure.
6. centrifugal magnetic drive according to claim 1, is characterized in that, driven rotor adopts and surrounds the cage construction that drives rotor, and is all establishing conductor loops near the both sides of driving rotor.
7. centrifugal magnetic drive according to claim 6, is characterized in that, in driven rotor, the side corresponding with magnet outer face is also provided with conductor loops.
8. centrifugal magnetic drive according to claim 1, is characterized in that, is provided with the container cavity of magnet back-moving spring in magnet inner side; Drive rotor, in centrifugal action lower magnet sliding process, magnet back-moving spring is extruded and is accommodated in container cavity.
9. centrifugal magnetic drive according to claim 1, is characterized in that, magnet material is selected ferrite or rare earth permanent-magnetic material.
10. centrifugal magnetic drive according to claim 1, is characterized in that, conductor loops material selection copper or aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320530960.XU CN203457027U (en) | 2013-08-28 | 2013-08-28 | Centrifugal-type magnetic drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320530960.XU CN203457027U (en) | 2013-08-28 | 2013-08-28 | Centrifugal-type magnetic drive device |
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| Publication Number | Publication Date |
|---|---|
| CN203457027U true CN203457027U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320530960.XU Withdrawn - After Issue CN203457027U (en) | 2013-08-28 | 2013-08-28 | Centrifugal-type magnetic drive device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414313A (en) * | 2013-08-28 | 2013-11-27 | 北京良明同创水处理设备开发中心 | Centrifugal magnetic transmission device |
| CN104993665A (en) * | 2015-07-20 | 2015-10-21 | 江苏南自通华电力自动化有限公司 | A self-protection cylindrical permanent magnet transmission device |
| CN105322758A (en) * | 2014-06-20 | 2016-02-10 | 蔡源祯 | magnetic operation control device |
| CN105871157A (en) * | 2016-04-11 | 2016-08-17 | 吉林大学 | Self-stabilizing centrifugal permanent magnet generator |
| CN109981865A (en) * | 2017-12-28 | 2019-07-05 | 广东欧珀移动通信有限公司 | It is centrifuged motor, electronic device and the method for adjusting electronic device angle |
-
2013
- 2013-08-28 CN CN201320530960.XU patent/CN203457027U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414313A (en) * | 2013-08-28 | 2013-11-27 | 北京良明同创水处理设备开发中心 | Centrifugal magnetic transmission device |
| CN103414313B (en) * | 2013-08-28 | 2017-05-31 | 北京良明宇航节能动力装备技术开发中心 | Centrifugal magnetic transmission device |
| CN105322758A (en) * | 2014-06-20 | 2016-02-10 | 蔡源祯 | magnetic operation control device |
| CN104993665A (en) * | 2015-07-20 | 2015-10-21 | 江苏南自通华电力自动化有限公司 | A self-protection cylindrical permanent magnet transmission device |
| CN105871157A (en) * | 2016-04-11 | 2016-08-17 | 吉林大学 | Self-stabilizing centrifugal permanent magnet generator |
| CN105871157B (en) * | 2016-04-11 | 2018-06-08 | 吉林大学 | One kind is from voltage stabilizing centrifugal permanent-magnet generator |
| CN109981865A (en) * | 2017-12-28 | 2019-07-05 | 广东欧珀移动通信有限公司 | It is centrifuged motor, electronic device and the method for adjusting electronic device angle |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140226 Effective date of abandoning: 20170531 |