CN203193472U - Permanent magnetism coupling machine capable of automatic torque limitation - Google Patents
Permanent magnetism coupling machine capable of automatic torque limitation Download PDFInfo
- Publication number
- CN203193472U CN203193472U CN 201320202580 CN201320202580U CN203193472U CN 203193472 U CN203193472 U CN 203193472U CN 201320202580 CN201320202580 CN 201320202580 CN 201320202580 U CN201320202580 U CN 201320202580U CN 203193472 U CN203193472 U CN 203193472U
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- magnetic conduction
- permanent magnetism
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Abstract
The utility model relates to a permanent magnetism coupling machine, and particularly relates to a permanent magnetism coupling machine capable of automatic torque limitation. The permanent magnetism coupling machine includes a magnetic conductive rotor and a permanent magnetic rotor, the magnetic conductive rotor is connected with a motor shaft and the permanent magnetic rotor is connected with a load shaft to make the end faces of the magnetic conductive rotor and the permanent magnetic rotor close to each other to connect magnetically and rotate simultaneously. An air gap is arranged between the magnetic conductive rotor and the permanent magnetic rotor, the permanent magnetic rotor is capable of axially sliding with respect to the magnetic conductive rotor to adjust the width of the air gap, the position of the permanent magnetic rotor, which is opposite to the end face of the magnetic conductive rotor, is provided with a position-specified unit, and the periphery of the load shaft is provided with a positioning disc with respect to the position-specified unit. The permanent magnetism coupling machine automatically performs the limitation of expulsive force and torque, reduces vibration or impact, and maintains high-efficient running and safety.
Description
Technical field
The utility model relates to the permanent magnetism axle-linked machine, the permanent magnetism axle-linked machine of a kind of automatic restriction torque specifically.
Background technology
General permanent magnetism axle-linked machine mainly is to be the magnetic conduction rotor of material by copper or aluminium, and the p-m rotor two parts with strong magnets are formed.The magnetic conduction rotor mainly is fixed on the motor drive shaft, and p-m rotor then is fixed on the bearing axle, gapped between magnetic conduction rotor and p-m rotor (being commonly referred to as air gap).So the binding meeting of motor and load changes soft (magnetic) binding into by original hard (machinery) binding, and the output torque that just can reach on the bearing axle by the air gap of regulating between magnetic conduction rotor and p-m rotor changes, and changes thereby reach load speed.
Permanent magnetism shaft coupling function is significantly improved the service performance of system, before starting load by permanent magnetism axle-linked machine CD-ROM drive motor No Load Start, not only reduced the starting current of motor and reduced to the thermal shock load of motor and to the influence of electric power system, thereby saves energy and the working life that prolongs motor, and very effectively reduced when starting drive system to the destructive tension force of belt conveyor, eliminated the concussion that produces when conveyer starts, can also alleviate the suffered startup of drive system itself significantly impacts, prolong belt, the useful life of vital parts such as idle pulley, promoted the safe and reliable operation of equipment, effectively reduced maintenance of equipment and fault time cost.So compared to traditional axle-linked machine, the permanent magnetism axle-linked machine provides more progressive structure really, and has practical value.
In addition, because the characteristic of permanent magnetism axle-linked machine, when static or working stage, the rotating speed of this magnetic conduction rotor and p-m rotor is close,, keeps good magnetic and links near this magnetic conduction rotor so this p-m rotor is subjected to the magnetic effect.Yet, the startup stage or bearing axle when being subjected to improper restriction, can produce the relative rotation speed with difference between this p-m rotor and the magnetic conduction rotor, can generation between this moment this p-m rotor and the magnetic conduction rotor relative away from repulsion, this repulsion can push away the p-m rotor with slippage ability this magnetic conduction rotor and reduce the magnetic binding, and then changes the output torque on this bearing axle.
Therefore, how to limit this repulsion and torque and change, to improve the transmission usefulness of permanent magnetism axle-linked machine, vibrations or impact when reducing running are the problem of quite paying attention to for industry.
The utility model content
At the problems referred to above, main purpose of the present utility model is to provide a kind of permanent magnetism axle-linked machine of automatic restriction torque, it guarantees that this permanent magnetism axle-linked machine is when starting to working stage, automatically carry out the restriction of repulsion, torque, reduce vibrations or impact, keep high efficiency running and the fail safe of this permanent magnetism axle-linked machine.
Another purpose of the present utility model is to provide a kind of permanent magnetism axle-linked machine of automatic restriction torque, and it can make the magnetic of this permanent magnetism axle-linked machine link disengaging fully when the working stage hang-up, avoids damaging this permanent magnetism axle-linked machine.
For achieving the above object, the utility model adopts following technical scheme:
A kind of permanent magnetism axle-linked machine of automatic restriction torque, include magnetic conduction rotor and p-m rotor, this magnetic conduction rotor is connected with motor drive shaft, this p-m rotor is connected with bearing axle, make the end face of this magnetic conduction rotor and p-m rotor mutually near link rotation simultaneously with magnetic, has air gap between this magnetic conduction rotor and the p-m rotor, this p-m rotor can be with respect to this magnetic conduction rotor axial slippage to adjust size of gaps, this p-m rotor end face of this magnetic conduction rotor dorsad is provided with position-limiting unit, and this bearing axle periphery is provided with positioning disk with respect to this position-limiting unit.
When this permanent magnetism axle-linked machine is static, because all rotation of this magnetic conduction rotor and p-m rotor, so can be subjected to magnetic attraction between the two, and between this magnetic conduction rotor and p-m rotor, be reserved with partly air gap.
When this permanent magnetism axle-linked machine starts, because motor drives this magnetic conduction rotor earlier and rotates, linking this p-m rotor by magnetic conduction rotor magnetic again rotates, this moment this magnetic conduction rotor and p-m rotor the inconsistent and generation difference of rotating speed, this difference can produce repulsion between this magnetic conduction rotor and p-m rotor, force this p-m rotor to leave this magnetic conduction rotor, and this moment, this p-m rotor still continued to accelerate, but its torque reduces, and can avoid producing concussion or damage this permanent magnetism axle-linked machine.
When aforementioned repulsion produces, far away excessively for avoiding this p-m rotor to leave this magnetic conduction rotor, cause magnetic link to lose efficacy and influence the rotation of this p-m rotor, thus with this position-limiting unit block in this positioning disk to keep suitable distance, allow this p-m rotor still can stablize acceleration.
When this p-m rotor continues to accelerate, this position-limiting unit will break away from restriction site to this positioning disk because of centrifugal force, but because of the rotating speed of this p-m rotor near this magnetic conduction rotor after, repulsion between the two can reduce or disappear, so this p-m rotor again near this magnetic conduction rotor, reduces the air gap between this magnetic conduction rotor and the p-m rotor involution, reduces the loss of power transmission, allow magnetic link optimization, this moment, this permanent magnetism axle-linked machine namely entered stable working stage.
In addition, when working stage, the urgent reduction of speed even stop if load end is subjected to accident, the rotating speed of this p-m rotor can descend rapidly, repulsion between this magnetic conduction rotor and the p-m rotor will produce again at this moment, because this position-limiting unit is not subjected to the restriction of this positioning disk, so can make this p-m rotor greatest limit away from this magnetic conduction rotor, make air gap maximization therebetween, allow magnetic link minimizing and be close to disappearance, this moment, the torque of p-m rotor can descend smoothly, avoided damaging this permanent magnetism axle-linked machine, improved the fail safe when using simultaneously.
This position-limiting unit includes fixture, movable part and elastic component; This fixture is fixed on this p-m rotor end face, and an end of this movable part is connected on this fixture, makes this movable part other end carry out activity with respect to this fixture, and this elastic component then is arranged between this fixture and the movable part; When this p-m rotor rotated, this movable part was subjected to centrifugal forces affect and breaks away from and limit this positioning disk position, and when this p-m rotor slowed down, this movable part then was subjected to this elastic component effect involution origin-location.
This movable part one end is inserted on this fixture with rotating shaft, this movable part other end is then swung with respect to this fixture, this elastic component is torsionspring, and this torsionspring is placed in this rotating shaft, and two arms of this torsionspring are resisted against respectively on this fixture and the movable part; Rotation centrifugal force by this p-m rotor and the involution elastic force of this torsionspring are controlled the rotation of this movable part.
This positioning disk is provided with identical this fixture, movable part, elastic component with respect to this p-m rotor, make the mutual buckle of movable part on this positioning disk and this p-m rotor, and control the rotation of this movable part with the involution elastic force of the rotation centrifugal force of this p-m rotor and this torsionspring.
This fixture is body, and this movable part then for being inserted in the body of rod in this body, makes the external part of this body of rod stretch with respect to this fixture, and this elastic component is coil tension spring, and this coil tension spring is installed on this body of rod and this body contact jaw; Control the flexible of this movable part by the rotation centrifugal force of this p-m rotor and the involution elastic force of this coil tension spring.
Advantage of the present utility model and beneficial effect are:
1. the utility model carries out the restriction of repulsion, torque automatically when starting to working stage, reduces vibrations or impact, keeps high efficiency running and the fail safe of this permanent magnetism axle-linked machine.
2. the utility model can make the magnetic of this permanent magnetism axle-linked machine link disengaging fully when the working stage hang-up, avoids damaging this permanent magnetism axle-linked machine.
Description of drawings
Fig. 1 is the first embodiment stereogram of the present utility model;
Figure 1A is that the position-limiting unit of first embodiment of the present utility model amplifies illustration;
Fig. 2 is the plane graph of first embodiment of the present utility model;
Fig. 3 is that the position-limiting unit of first embodiment of the present utility model launches plane graph;
Fig. 4 is the second embodiment stereogram of the present utility model;
Fig. 4 A is that the position-limiting unit of second embodiment of the present utility model amplifies illustration;
Fig. 5 is the plane graph of second embodiment of the present utility model;
Fig. 6 is that the position-limiting unit of second embodiment of the present utility model launches plane graph;
Fig. 7 is the 3rd embodiment stereogram of the present utility model;
Fig. 7 A is that the position-limiting unit of the 3rd embodiment of the present utility model amplifies illustration;
Fig. 8 is the plane graph of the 3rd embodiment of the present utility model;
Fig. 9 is that the position-limiting unit of the 3rd embodiment of the present utility model launches plane graph;
Figure 10 is the locations of structures cutaway view of the utility model starting stage;
Figure 10 A is the enlarged drawing in a zone among Figure 10;
Locations of structures cutaway view startup stage that Figure 11 delaying for the utility model;
Figure 12 is the locations of structures cutaway view of the utility model involution working stage;
Locations of structures cutaway view when Figure 13 meets accident situation for the utility model.
Wherein: 1 is the magnetic conduction rotor, and 11 is motor drive shaft, and 2 is p-m rotor, and 21 is bearing axle, and 3 is air gap, 4 is position-limiting unit, and 41 is fixture, and 41b is body, and 42 is movable part, and 42b is the body of rod, 421b is external part, and 43 is elastic component, and 43a is torsionspring, and 43b is coil tension spring, and 5 is positioning disk.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.
Shown in Fig. 1, Fig. 2, Figure 10, Figure 10 A, the utility model includes magnetic conduction rotor 1 and p-m rotor 2, this magnetic conduction rotor 1 is connected with motor drive shaft 11, this p-m rotor 2 is connected with bearing axle 21, this magnetic conduction rotor 1 and the end face of p-m rotor 2 are rotated near linking simultaneously with magnetic mutually, has air gap 3 between this magnetic conduction rotor 1 and the p-m rotor 2, by adjusting the magnetic connection relationship that these air gap 3 sizes can change this magnetic conduction rotor 1 and p-m rotor 2, to obtain required working speed.
The utility model principal character is that this p-m rotor 2 can be with respect to this magnetic conduction rotor 1 in these bearing axle 21 peripheral slippages, to adjust air gap 3 sizes, so as to changing the magnetic connection relationship.This p-m rotor 2 end face of this magnetic conduction rotor 1 dorsad is provided with position-limiting unit 4, and these bearing axle 21 peripheries are provided with positioning disk 5 with respect to this position-limiting unit 4, makes these position-limiting unit 4 blocks on this positioning disk 5, so as to limiting the skidding distance of this p-m rotor 2.
Shown in Fig. 1, Figure 1A, be first embodiment of the present utility model.This position-limiting unit 4 includes fixture 41, movable part 42 and elastic component 43, this fixture 41 is fixed on these p-m rotor 2 end faces, these movable part 42 1 ends are connected on this fixture 41, make these movable part 42 other ends carry out activity with respect to this fixture 41,43 of this elastic components are arranged between this fixture 41 and the movable part 42.When this p-m rotor 2 rotates, this movable part 42 is subjected to centrifugal forces affect and breaks away from the position of limiting this positioning disk 5, when this p-m rotor 2 slows down, 42 of this movable parts are subjected to this elastic component 43 effect involution origin-locations, limit the skidding distance of this p-m rotor 2, to adjust the connection relationship between this p-m rotor 2 and this magnetic conduction rotor 1.
As shown in Figure 2, these movable part 42 1 ends are inserted on this fixture 41 with rotating shaft, these movable part 42 other ends then block on this positioning disk 5, this elastic component 43 is torsionspring 43a, this torsionspring 43a is placed in this rotating shaft, two arms of this torsionspring 43a are resisted against respectively on this fixture 41 and the movable part 42, two arms of this torsionspring 43a open at ordinary times stretch and with these movable part 42 push-jump blocks on this positioning disk 5.When these p-m rotor 2 rotations accelerate to default value, as shown in Figure 3, swing disengaging to the restriction of this positioning disk 5 because the relation of rotating centrifugal force can make the elastic force of this movable part 42 this torsionspring of opposing 43a, and the elastic force because of this torsionspring 43a makes these movable part 42 involution blocks on this positioning disk 5 when these p-m rotor 2 rotating speeds reduce.
By aforementioned structure, to such an extent as to during this permanent magnetism axle-linked machine self-starting work, its overview of steps is as follows:
(1) starting stage
As shown in figure 10, when this permanent magnetism axle-linked machine remains static, because this magnetic conduction rotor 1 does not all rotate with p-m rotor 2, so can be subjected to magnetic attraction between the two, and between this magnetic conduction rotor 1 and p-m rotor 2, being reserved with minimal air gap 3, the movable part 42 of this position-limiting unit 4 was subjected to these elastic component 43 effects and kept initial position this moment.
(2) startup stage of delaying
As shown in figure 11, when this permanent magnetism axle-linked machine starts, this magnetic conduction rotor 1 can produce speed difference with p-m rotor 2, this difference can produce repulsion between this magnetic conduction rotor 1 and p-m rotor 2, force this p-m rotor 2 to leave this magnetic conduction rotor 1, these p-m rotor 2 torques are reduced, but still continue to accelerate, can avoid producing concussion or damage this permanent magnetism axle-linked machine, the movable part 42 of this position-limiting unit 4 is because of the not enough initial position that still maintains of centrifugal force of this p-m rotor 2 at this moment.
(3) the anti-back stall stage
To control the distance that this p-m rotor 2 leaves this magnetic conduction rotor 1, the magnetic that makes this p-m rotor 2 still can be subjected to this magnetic conduction rotor 1 links and continues to accelerate movable part 42 blocks of this position-limiting unit 4 on this positioning disk 5.
(4) involution working stage
As shown in figure 12, after the rotating speed of this p-m rotor 2 is near this magnetic conduction rotor 1, repulsion between the two can reduce or disappear, so this p-m rotor 2 with involution again near this magnetic conduction rotor 1, air gap 3 between this magnetic conduction rotor 1 and the p-m rotor 2 is reduced, magnetic links optimization, this moment, this permanent magnetism axle-linked machine namely entered stable working stage, this moment, the centrifugal force because of this p-m rotor 2 strengthened, the movable part 42 of this position-limiting unit 4 is pushed away the restriction of this positioning disk 5, but because repulsion disappears, so this p-m rotor 2 is not affected.
In addition, as shown in figure 13, when working stage, the urgent reduction of speed even stop if bearing axle 21 is subjected to accident, the rotating speed of this p-m rotor 2 can descend rapidly, repulsion between this magnetic conduction rotor 1 and the p-m rotor 2 will produce again at this moment, but because this position-limiting unit 4 is not subjected to the restriction of this positioning disk 5, so can make these p-m rotor 2 greatest limits away from this magnetic conduction rotor 1, make air gap 3 maximizations therebetween, allow magnetic link minimizing and be close to disappearance, this moment, the torque of p-m rotor 2 can descend smoothly, minimizing improves the fail safe when using simultaneously to the influence of this permanent magnetism axle-linked machine.
To shown in Figure 6, be second embodiment of the present utility model as Fig. 4.Aforementioned position-limiting unit 4 can arrange many groups in the surface of this p-m rotor 2, to increase spacing stability.In addition, because this positioning disk 5 rotates synchronously with this p-m rotor 2, so this positioning disk 5 is provided with this fixture 41, movable part 42, elastic component 43 equally with respect to this position-limiting unit 4 of this p-m rotor 2, so, movable part 42 on this positioning disk 5 and this p-m rotor 2 is the while buckle each other, can bring into play restriction effect, so more accurate in the control, visual demand arranges.
To shown in Figure 9, be the 3rd embodiment of the present utility model as Fig. 7.This fixture 41 is body 41b, 42 of this movable parts are the body of rod 42b that is inserted among this body 41b, the external part 421b of this body of rod 42b is stretched with respect to this body 41b, this elastic component 43 is coil tension spring 43b, this coil tension spring 43b is installed on this body of rod 42b and this body 41b contact jaw, controls the flexible of this body of rod 42b by the rotation centrifugal force of this p-m rotor 2 and the involution elastic force of this coil tension spring 43b.Certainly, the example that arranges of this fixture 41, movable part 42, elastic component 43 changes a lot, and all designs that can reach as the alleged limit function of the utility model all should be considered as protection range of the present utility model.
Claims (6)
1. permanent magnetism axle-linked machine that automatically limits torque, include magnetic conduction rotor and p-m rotor, this magnetic conduction rotor is connected with motor drive shaft, this p-m rotor is connected with bearing axle, make the end face of this magnetic conduction rotor and p-m rotor mutually near linking, also rotate simultaneously with magnetic, power is passed on this bearing axle via this motor drive shaft exports, it is characterized in that: have air gap between this magnetic conduction rotor and the p-m rotor, this p-m rotor can be with respect to this magnetic conduction rotor axial slippage to adjust size of gaps, to adjust the connection relationship between this p-m rotor and this magnetic conduction rotor.
2. the permanent magnetism axle-linked machine of automatic restriction torque as claimed in claim 1, it is characterized in that: this p-m rotor end face of this magnetic conduction rotor dorsad is provided with position-limiting unit, this bearing axle periphery is provided with positioning disk with respect to this position-limiting unit, when this p-m rotor during away from this magnetic conduction rotor, this position-limiting unit need block limits the distance of this p-m rotor slippage in this positioning disk, to adjust the connection relationship between this p-m rotor and this magnetic conduction rotor.
3. the permanent magnetism axle-linked machine of automatic restriction torque as claimed in claim 2, it is characterized in that: this position-limiting unit includes fixture, movable part and elastic component; This fixture is fixed on this p-m rotor end face, and an end of this movable part is connected on this fixture, makes this movable part other end carry out activity with respect to this fixture, and this elastic component then is arranged between this fixture and the movable part; When this p-m rotor rotated, this movable part was subjected to centrifugal forces affect and breaks away from and limit this positioning disk position, and when this p-m rotor slowed down, this movable part then was subjected to this elastic component effect involution origin-location.
4. the permanent magnetism axle-linked machine of automatic restriction torque as claimed in claim 3, it is characterized in that: this movable part one end is inserted on this fixture with rotating shaft, this movable part other end is then swung with respect to this fixture, this elastic component is torsionspring, this torsionspring is placed in this rotating shaft, and two arms of this torsionspring are resisted against respectively on this fixture and the movable part; Rotation centrifugal force by this p-m rotor and the involution elastic force of this torsionspring are controlled the rotation of this movable part.
5. the permanent magnetism axle-linked machine of automatic restriction torque as claimed in claim 4, it is characterized in that: this positioning disk is provided with identical this fixture, movable part, elastic component with respect to this p-m rotor, make the mutual buckle of movable part on this positioning disk and this p-m rotor, and control the rotation of this movable part with the involution elastic force of the rotation centrifugal force of this p-m rotor and this torsionspring.
6. the permanent magnetism axle-linked machine of automatic restriction torque as claimed in claim 3, it is characterized in that: this fixture is body, this movable part is then for being inserted in the body of rod in this body, the external part of this body of rod is stretched with respect to this fixture, this elastic component is coil tension spring, and this coil tension spring is installed on this body of rod and this body contact jaw; Control the flexible of this movable part by the rotation centrifugal force of this p-m rotor and the involution elastic force of this coil tension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202580 CN203193472U (en) | 2013-04-19 | 2013-04-19 | Permanent magnetism coupling machine capable of automatic torque limitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320202580 CN203193472U (en) | 2013-04-19 | 2013-04-19 | Permanent magnetism coupling machine capable of automatic torque limitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203193472U true CN203193472U (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320202580 Expired - Fee Related CN203193472U (en) | 2013-04-19 | 2013-04-19 | Permanent magnetism coupling machine capable of automatic torque limitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203193472U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113184A (en) * | 2013-04-19 | 2014-10-22 | 杰达电能科技股份有限公司 | Permanent magnet coupling machine capable of automatically limiting torque |
| WO2020206706A1 (en) * | 2019-04-08 | 2020-10-15 | 宋杭军 | Permanent magnet unit, and radially-distributed adjustable permanent magnet safety coupling |
-
2013
- 2013-04-19 CN CN 201320202580 patent/CN203193472U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104113184A (en) * | 2013-04-19 | 2014-10-22 | 杰达电能科技股份有限公司 | Permanent magnet coupling machine capable of automatically limiting torque |
| WO2020206706A1 (en) * | 2019-04-08 | 2020-10-15 | 宋杭军 | Permanent magnet unit, and radially-distributed adjustable permanent magnet safety coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20180419 |