CN203326850U - Limit-torque permanent-magnet coupler with high-efficient cooling and low noise - Google Patents
Limit-torque permanent-magnet coupler with high-efficient cooling and low noise Download PDFInfo
- Publication number
- CN203326850U CN203326850U CN2013203702702U CN201320370270U CN203326850U CN 203326850 U CN203326850 U CN 203326850U CN 2013203702702 U CN2013203702702 U CN 2013203702702U CN 201320370270 U CN201320370270 U CN 201320370270U CN 203326850 U CN203326850 U CN 203326850U
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- permanent magnet
- external rotor
- low noise
- heat radiation
- hollow shaft
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Abstract
Disclosed in the utility model is a limit-torque permanent-magnet coupler with high-efficient cooling and low noise. The permanent-magnet coupler comprises a hollow shaft; two internal rotator plates for placing permanent magnets are installed at the hollow shaft; external rotor plates are respectively installed at the outer sides of the two internal rotator plates; and the two external rotor plates are mutually connected. Copper plates are fixed at the inner sides of the external rotor plates; and curved cooling fins are fixed at the outer sides of the external rotor plates. The curved cooling fins and the external rotor plates are in one-time moulding integrated or split structure mode; and the curved cooling fins are in arc curved shape or a spline curved shape. With the permanent-magnet coupler, the vibration and the noises of the transmission system can be reduced; the heat generated by the external rotor plates can be efficiently removed; the operating noise is low; the torque limiting function is realized; and the motor can be protected in real time.
Description
Technical field
The utility model relates to the permanent magnet transmission technical field, particularly relates to a kind of high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch.
Background technology
Use in a large number at present mechanical couplings in drive system; part is used fluid coupling; use mechanical coupling; installation process center shafting centering is had relatively high expectations; and can't reduce system vibration and noise in use procedure; more can't alleviate the impact in motor start-up procedure, can't be protected motor.Though fluid coupling can be realized the light-load starting of motor, reduce the impact in motor start-up procedure, in its installation process, to the shafting alignment degree, require still higher.Though the moment-limited hydraulic coupler can carry out overload protection to motor, safeguard loaded down with trivial detailsly, need periodic oil change, and bearing life is limited, easily breaks down.
The appearance of permanent magnet clutch has solved the defect that above-mentioned traditional shaft coupling exists, and is widely used in industry, and well-known permanent magnet transmission production firm is U.S. Magna company both at home and abroad, and its permanent magnet transmission product is based on the inducing eddy-current principle.Permanent magnet clutch based on the inducing eddy-current principle has conductor disc and permanent magnetic disk, there is air gap between the two, conductor disc and permanent magnetic disk relatively rotate, conductor disc is because of the rotation cutting magnetic line, form vortex flow, vortex flow produces again the magnetic field interaction of dislike ，Gai magnetic field, magnetic field and permanent magnetic disk generation, makes between conductor disc and permanent magnetic disk and produces the magnetic moment of torsion.Vortex flow produces a large amount of heats on conductor disc, if conductor disc excess Temperature, to cause transmission efficiency to descend, too high temperature is also brought potential safety hazard to system, therefore on conductor disc, corresponding radiator must be set, the permanent magnet transmission product is in the process of high-power development at present, and heat radiation becomes the bottleneck of its development.Under the current techniques condition, when motor speed is 1500r/min, permanent magnet clutch adopts wind-cooling heat dissipating, maximum power can reach the 300Kw left and right, and motor speed is while being 750r/min, the permanent magnet clutch maximum power of wind-cooling heat dissipating is the 130Kw left and right, has greatly limited applying of permanent magnet transmission product.
Patent of invention self-unloading magnetic coupler (publication number: CN1543700A) disclose the arm-type torque limited type of a kind of breech lock shaft coupling, the shaft coupling of this form is not installed fin, and the latch arms device is exposed to outside housing, in running, heat radiation and fail safe are poor.(publication number: CN201550013U) disclose a kind of permanent magnet eddy current coupling, fin is not installed equally, its limit square device also is exposed to outside housing the utility model patent permanent magnet eddy current coupling, and heat radiation and fail safe are also bad.Good heat-sinking capability is the key of eddy-current permanent magnetic shaft coupling, and the good fail safe essential condition of slewing especially.
The utility model content
The purpose of this utility model is to provide a kind of energy and reduces the heat of the permanent magnet clutch generation based on the operation of vortex flow principle the torque limited type permanent magnet clutch of low noise operation.
For solving the problems of the technologies described above, the utility model comprises hollow shaft, be equipped with two on described hollow shaft for placing the internal rotor dish of permanent magnet, an external rotor dish also is equipped with respectively in the outside of two internal rotor dishes, two external rotor dishes interconnect, the medial surface of described external rotor dish is fixed with the copper dish, the described external rotor dish outside is fixed with the curve radiating fin, described curve radiating fin and external rotor dish are one-shot forming one or Split type structure, and described curve radiating fin is circular curve shape or spline curve shape.
As a kind of preferred version of the present utility model, the height of described curve radiating fin is 2-40mm.
As a kind of preferred version of the present utility model, the cross section of described hollow shaft is quadrangle, two straight flange two circular arcs or external splines shapes.
As a kind of preferred version of the present utility model, position-arresting disk also is installed on the medial surface of described internal rotor dish, described position-arresting disk is placed on hollow shaft; Have chute in described position-arresting disk, be provided with spacer pin in chute, the top of described spacer pin is connected with an end of spring, and the other end of spring is connected with the clamp nut at chute top; Described hollow shaft is provided with limit pin hole; Described high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch is static or while just having started, described spacer pin is inserted in described limit pin hole.
As a kind of preferred version of the present utility model, the circumferencial direction of described internal rotor dish is placed with the even number permanent magnet, and the pole-face of described permanent magnet is spaced according to S-N-S.
As a kind of preferred version of the present utility model, described permanent magnet is square permanent magnet.
As a kind of preferred version of the present utility model, described two external rotor dishes are by stud and limiting plate phase downlink connection.
Technique effect of the present utility model is to reduce the vibration and noise of drive system, efficiently removes the heat produced on the external rotor dish, and running noise is low, possesses torque-limiting function, but the real-time guard motor has improved the safety and reliability of system greatly.
The accompanying drawing explanation
Below in conjunction with accompanying drawing and preferred implementation, the utility model is described in further detail.
Fig. 1 is cutaway view of the present utility model;
Fig. 2 is the utility model side schematic view;
Fig. 3 is permanent magnet layout plan in the utility model;
Fig. 4 is the static and spacing structural scheme of mechanism while just having started of the utility model;
Fig. 5 is that the utility model reaches and sets position-limit mechanism schematic diagram after rotating speed;
Fig. 6 is the utility model torque overload guard mode figure.
Embodiment
As shown in Figure 1, high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch comprises input flange 1, external rotor dish 2, is fixed on the fin 3 in external rotor dish 2 outsides, and the copper dish 4 that is fixed on external rotor dish 2 medial surfaces, the stud 5 that two external rotor dishes are coupled together and limiting plate 6; Also comprise internal rotor dish 7 and the cover plate 9 of placing permanent magnet 8, mounting limit dish 13 on internal rotor dish 7, position-arresting disk 13 is placed on hollow shaft 15, in position-arresting disk 13, has chute, clamp nut 10, spacer pin 12 and spring 11 are installed in chute, and output flange 14 is connected with hollow shaft 15.Wherein, the cross section of described hollow shaft is quadrangle, two straight flange two circular arcs or external splines shapes, and the centring property of two straight flange two circular arcs or external splines shape is better than quadrangle, and this structure has good centering and can better be processed.
As shown in Figure 2, fin of the present utility model is the curve radiating fin, is installed on the outside of external rotor dish 2, and curve radiating fin 3 is one-shot forming one or Split type structure with external rotor dish 2, be highly 2～40mm, curve radiating fin 3 is circular curve shape or spline curve shape.This kind of form fin not only increased area of dissipation, and the whirlpool, edge is less, and Flow Field Distribution is more smooth and easy, accelerated Air Flow in rotation process, improved radiating efficiency, also is conducive to reduce noise.
As shown in Figure 3, the square permanent magnet 8 of even number is placed in internal rotor dish 7 circumferencial direction perforates of the present utility model, and internal rotor dish 7 is placed on hollow shaft 15, and the pole-face of square permanent magnet is spaced according to S-N-S.
As shown in Figure 1, during the utility model normal operation, input flange 1 is connected with motor shaft, external rotor dish 2 inboard and 17 air gaps that 3mm is arranged of internal rotor dish, after electric motor starting, drive external rotor dish 2 and rotate, external rotor dish 2 produces vortex flow because of the magnetic line of force produced in cutting permanent magnet 8, the magnetic field interaction that the magnetic field that vortex flow produces and permanent magnet 8 produce, rotate thereby drive hollow shaft 15, then makes load rotate.
Position-arresting disk 13 also is installed on the medial surface of described internal rotor dish 17, and described position-arresting disk 13 is placed on hollow shaft 15; Have chute in described position-arresting disk 13, be provided with spacer pin 12 in chute, the top of described spacer pin 12 is connected with an end of spring 11, and the other end of spring 11 is connected with the clamp nut 10 at chute top; Described hollow shaft 15 is provided with limit pin hole.As shown in Figure 4, the utility model static and while just having started spring 11 compress spacer pins 12, the limit pin hole that spacer pin 12 inserts in hollow shafts 15, now internal rotor dish 7 can not horizontally slip on hollow shaft 15.As shown in Figure 5, after the utility model reaches and sets rotating speed, because the effect of centrifugal force makes spacer pin 12 holddown springs 11, spacer pin 12 shifts out the limit pin hole on hollow shaft 15, and now internal rotor dish 7 can horizontally slip on hollow shaft 15.As can be seen here, this structure is installed on moving component in housing, safety and reliability and more compact structure.
As shown in Figure 6, during the protection of the utility model torque overload, load torque surpasses design maximum moment of torsion of the present utility model; as shown in Figure 5; spacer pin 12 holddown springs 11, spacer pin 12 shifts out the limit pin hole on hollow shaft 15, and now internal rotor dish 7 can horizontally slip on hollow shaft 15.Repulsive force between internal rotor dish 7 and copper dish 4 increases; promote internal rotor dish 7 and slide into the centre of two external rotor dishes 2 by hollow shaft 15; air gap between external rotor dish 2 inboards and internal rotor dish 17 is increased to 28mm by 3mm; now; magnetic fields power between internal rotor dish 7 and copper dish 4 significantly reduces; cause external rotor dish 2 normal rotation, internal rotor dish 7 does not turn, and has protected motor.If motor stalling now, the gravitation between internal rotor dish 7 and copper dish 4 increases, make internal rotor dish 7 slide to copper dish 4, air gap between the two returns to the 3mm of normal condition, spacer pin 12 is returned to the initial condition shown in Fig. 4, the utility model returns to the initial condition of Fig. 1, for starting next time, prepares.
Not only increased area of dissipation by curve radiating fin of the present utility model, and the whirlpool, edge is less, Flow Field Distribution is more smooth and easy, has accelerated Air Flow in rotation process, has improved radiating efficiency, also is conducive to reduce noise.The utility model possesses torque-limiting function simultaneously, and total is installed on moving component in housing, but the real-time guard motor has improved the safety and reliability of system greatly.
The preferred embodiment of below the utility model having been created illustrates, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all modification be equal to or replacement under the prerequisite without prejudice to the utility model creative spirit, and the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (7)
1. high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch, comprise hollow shaft, be equipped with two on described hollow shaft for placing the internal rotor dish of permanent magnet, an external rotor dish also is equipped with respectively in the outside of two internal rotor dishes, two external rotor dishes interconnect, the medial surface of described external rotor dish is fixed with the copper dish, it is characterized in that, the described external rotor dish outside is fixed with the curve radiating fin, described curve radiating fin and external rotor dish are one-shot forming one or Split type structure, and described curve radiating fin is circular curve shape or spline curve shape.
2. high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch according to claim 1, is characterized in that, the height of described curve radiating fin is 2-40mm.
3. high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch according to claim 1, is characterized in that, the cross section of described hollow shaft is quadrangle, two straight flange two circular arcs or external splines shapes.
4. high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch according to claim 1, is characterized in that, position-arresting disk also is installed on the medial surface of described internal rotor dish, and described position-arresting disk is placed on hollow shaft; Have chute in described position-arresting disk, be provided with spacer pin in chute, the top of described spacer pin is connected with an end of spring, and the other end of spring is connected with the clamp nut at chute top; Described hollow shaft is provided with limit pin hole; Described high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch is static or while just having started, described spacer pin is inserted in described limit pin hole.
5. high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch according to claim 1, is characterized in that, the circumferencial direction of described internal rotor dish is placed with the even number permanent magnet, and the pole-face of described permanent magnet is spaced according to S-N-S.
6. high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch according to claim 1, is characterized in that, described permanent magnet is square permanent magnet.
7. high efficiency and heat radiation low noise distance-limiting type permanent magnet clutch according to claim 1, is characterized in that, described two external rotor dishes are by stud and limiting plate phase downlink connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203702702U CN203326850U (en) | 2013-06-26 | 2013-06-26 | Limit-torque permanent-magnet coupler with high-efficient cooling and low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203702702U CN203326850U (en) | 2013-06-26 | 2013-06-26 | Limit-torque permanent-magnet coupler with high-efficient cooling and low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326850U true CN203326850U (en) | 2013-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203702702U Withdrawn - After Issue CN203326850U (en) | 2013-06-26 | 2013-06-26 | Limit-torque permanent-magnet coupler with high-efficient cooling and low noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326850U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904859A (en) * | 2013-06-26 | 2014-07-02 | 上海市东方海事工程技术有限公司 | Efficient-heat-dissipation low-noise torque limited permanent magnetic coupling |
| NL2016163B1 (en) * | 2016-01-27 | 2017-08-04 | Zytec Tech B V | Magnetic coupling assembly |
-
2013
- 2013-06-26 CN CN2013203702702U patent/CN203326850U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904859A (en) * | 2013-06-26 | 2014-07-02 | 上海市东方海事工程技术有限公司 | Efficient-heat-dissipation low-noise torque limited permanent magnetic coupling |
| CN103904859B (en) * | 2013-06-26 | 2016-07-06 | 上海市东方海事工程技术有限公司 | High efficiency and heat radiation low noise distance-limiting type permanent magnet clutch |
| NL2016163B1 (en) * | 2016-01-27 | 2017-08-04 | Zytec Tech B V | Magnetic coupling assembly |
| WO2017131524A3 (en) * | 2016-01-27 | 2017-10-12 | Zytec B.V. | Magnetic coupling assembly |
| US11356009B2 (en) | 2016-01-27 | 2022-06-07 | Zytec Technologies B.V. | Magnetic coupling assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131204 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |