CN204103739U - A kind of soft start permanent magnet eddy current coupling - Google Patents

A kind of soft start permanent magnet eddy current coupling Download PDF

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Publication number
CN204103739U
CN204103739U CN201420655163.9U CN201420655163U CN204103739U CN 204103739 U CN204103739 U CN 204103739U CN 201420655163 U CN201420655163 U CN 201420655163U CN 204103739 U CN204103739 U CN 204103739U
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CN
China
Prior art keywords
permanent magnet
rotor
soft start
eddy current
conductor disc
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Expired - Fee Related
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CN201420655163.9U
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Chinese (zh)
Inventor
李申
李延民
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Zhengzhou University
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Zhengzhou University
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Publication of CN204103739U publication Critical patent/CN204103739U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of soft start permanent magnet eddy current coupling, comprise conductor disc rotor and permanent magnet rotor; Conductor disc rotor is drive end, is connected with motor shaft, uses expansion set structure to achieve fast mounting-dismounting; Conductor disc rotor surrounds permanent magnet rotor, and adjacent part has air gap to separate; Permanent magnet rotor is driven end, is connected with bearing axle; The linkage rod slide block mechanism of permanent magnet rotor inside has the function regulating air gap, thus controls the torque and rotational speed of transmission; Four main transmission bearing pins of permanent magnet rotor inside provide bridge for moment transmission, are also that the motion of permanent magnet carrier provides guiding; The changing value of the start-up course air gap that the centrifuge arm in permanent magnet rotor ensures, reaches good soft start effect; The utility model just has the basic function of permanent magnet clutch, is integrated with again the function of soft start and overload protection, structurally simply compact, has larger actual value.

Description

A kind of soft start permanent magnet eddy current coupling
Technical field
The utility model relates to a kind of permanent magnet eddy current coupling, is controlled the change of air gap between permanent magnet and conductor disc, realize the soft start of motor, and in the case of an overload, realize overload protection by assembly.Especially the soft start permanent magnet eddy current coupling of overload protection.
Background technology
In existing machine driving, between motor and load, great majority are modes that mechanical structure directly connects.Mechanical shaft coupling, there is contacting with each other of parts, vibration passing is difficult to avoid, even flexible coupling, elasticity is also less, so in use there is following problem: in the process of installing, driving shaft and driven shaft require higher centering, installation accuracy is high, increases installation difficulty and machining accuracy.What transmit in transmission is not only torque, and also have load to the vibration effect of motor, the vibration of the course of work, grievous injury motor, transmission mechanism and load equipment, make the life-span of equipment significantly reduce.
The mechanism of relevant speed change and change torque in transmission, carries out soft start and speed governing as used now frequency converter and fluid coupling.Frequency converter has harmonic pollution to electric power system, and the transmission efficiency of fluid coupling is lower, and environment for use requires higher.
The structure of permanent magnet clutch uniqueness, makes it in use have unmatched advantage.Permanent magnet shaft coupling has all kinds, and as speed-regulating type, practical, soft start type etc., present stage is in industrial circle application such as oil, chemical industry, electric power.Realize the basic function of permanent magnet shaft coupling, while transmitting torque, also have installation accuracy low, overload protection, soft start, the plurality of advantages such as speed governing.Such as, in transmission process, active part and secondary part have air gap to separate, and vibration would not influence each other like this.Eliminate the existence vibrated in transmittance process, not only improve transmission efficiency, save the energy, and improve the useful life of equipment.The existence of air gap, makes to avoid higher centering in installation process, reduces installation accuracy and also can meet use, reduce installation cost, save the set-up time, improve installation effectiveness.
The principle of permanent magnet eddy current coupling is, the magnetic field that conductor disc cutting is produced by permanent magnet, produces vortex flow, the dislike magnetic field that vortex flow produces, and with former magnetic field interaction, produces the effect of power.In rotation status, produce the effect of torque; In linear state, produce the effect along direction of motion power.Owing to there being the existence of vortex flow, eddy current loss just exists.Less speed discrepancy has less eddy current loss.To try one's best, little speed discrepancy obtains maximum torque, and certain permanent magnet volume obtains maximum magnetic flux density, is here needs.The core component of permanent magnet eddy current coupling is permanent magnet and conductor.Because its internal structure is complicated, and in transmission, there is larger rotating speed, extensive along with what apply, realize dynamically balanced problem with simple structure and highlight.While generation torque, the huge axial force that magnetic conductive disk and permanent magnet produce also is be badly in need of eliminating.
, because the process started can not take into account the function of soft start and overload protection, there is the place of improving in the soft start shaft coupling of present stage.And internal structure is too complicated, can be simplified by new structure., there is low-response or the multiple shortcoming such as frictional force is larger in the interlock of permanent magnet in symmetrical structure.Magnet form in shaft coupling is too single, and the geomery of permanent magnet needs to improve, with the torque that the permanent magnet transmission of smaller size smaller is larger, and the advantage in acquisition cost.
Utility model content
This practical object is the deficiency in order to overcome above-mentioned technology, provides structure simple permanent magnet clutch, realizes the function of soft start and overload protection simultaneously.
This shaft coupling comprises two large divisions, conductor disc rotor and permanent magnet rotor.Conductor disc rotor is drive end, is connected with motor shaft.Permanent magnet rotor is driven end, is connected with bearing axle.Both connections all use expansion set flange arrangement, realize fast mounting-dismounting function.The magnetic induction line that conductor disc cutting permanent magnet produces, produces vortex flow, forms dislike magnetic field, with former magnetic field interaction, produce the effect of torque.Wherein conductor disc rotor is in outside, and permanent magnet rotor is in inside; The adjustment of air gap is realized by the axial distance change of two permanent magnet carriers in permanent magnet rotor.
Conductor disc rotor is drive end.Be carrier by the good mild steel of magnetic property, good for electric conductivity ring-type copper dish is connected by screw above; Due to the left and right sides, overall structure is cylindrical caged, and low-carbon (LC) steel disk is bottom surface, left and right two, and copper dish is attached to inside; Left and right two low-carbon (LC) steel disks are connected by connecting plate, are fixed by screw bolt and nut.The flange be connected with motor shaft is connected by screw low-carbon (LC) steel disk, and by expansion set, flange is fastened on motor shaft.
Permanent magnet rotor is driven end, and permanent magnet is driving source, the function moving axially realization adjustment air gap of two permanent magnet carrier plate.Bearing axle connects driven end by expansion set clamp flange dish.Because the weight of permanent magnet rotor is comparatively large, cantilevered length is longer, and ring flange is connected with the central shaft of permanent magnet rotor by bolt and nut.Permanent magnet is prismatoid shape, and by being embedded in fixed position in perforate permanent magnet carrier, the size of wherein permanent magnet carrier perforate is identical with permanent magnet with quantity, and even circumferential is arranged; In order to the magnetic circuit of permanent magnet circulates, and the structural strength of shaft coupling, enclose a carrier liner at the back side of every block permanent magnet carrier, its material is mild steel, carrier liner welds the strip steel plate of two flutings, connect the force part of two plates as connecting rod, and increase lifting surface area by slide block.Connecting rod is rectangle, punching two ends, by hexagonal axis rotator bolt connection carrier liner plate.In the middle of connecting rod, punching, is bolted on fixed block by the shaft shoulder.Fixed block corner is equipped with four holes, installs four axis of guides, and with holding out against screw fastening, the axis of guide, through permanent magnet carrier, makes its stable movement.Fixed block is fixing on center shaft, axially has screw fastening end cap location on center shaft, radial through two key location.One of them carrier liner is equipped with upper and lower centrifuge arm, by pinned connection, bearing pin is equipped with wind spring, makes centrifuge arm return when starting.
The connection of two pieces of conductor carrier dishes uses centre to open the connecting plate of shallow slot, and while guarantee width, the groove that the back side is opened too increases inner space, improves the utilance in space, weight reduction simultaneously.The narrow shape in wide centre, two ends of connecting plate, makes the moment transmitted compared with small size connecting plate improve.Four pieces of connecting plates, make the integrally-built face of cylinder have larger space, in shaft coupling operation process, temperature is stablized, and the rotation of connecting plate also can drive the flowing of air, and the heat exchange of the inside and outside of shaft coupling is accelerated; Shaft coupling for relatively high power can add radiating fin or water-cooling system on outside conductor carrier dish.Conductor carrier dish is connected with ring flange screw, makes to install comparatively that aspect is quick.
The interlock of two blocks of permanent magnet carriers, employs laterally zygomorphic two connecting rods.Be arranged on the connecting rod on fixed block, the contrary axial force of shaft coupling internal direction is cancelled out each other, eliminate impact to external world.The connection of connecting rod and liner plate is hexagonal axis rotator bolt and slide block, because will relatively rotate, certainly has the use of pin, in the groove slided, uses slide block, adds contact area; Make stress surface more even, reduce friction, increase the service life.
Four motions of the axis of guide to two permanent magnet carriers be fixed on fixed block have guide effect.Due to guiding movement, there is friction, add a fairlead, make less traction in the hole of permanent magnet load plate between contact-making surface, motor imagination is more quick, long service life.
The use of centrifuge arm, ensure that, in the process of startup, level of torque is stablized, can realize the function of soft start.When load strengthens suddenly, air gap is along with becoming large, and centrifuge arm is vertically for overload protection provides condition.In order to ensure centrifuge arm return when starting, when overload protection vertical (larger space is provided), at the rotational pin position of centrifuge arm, add wind spring; The design of this wind spring, has symmetrical two parts, the part that two ends are stretched, and utilizes hole reserved on liner plate to provide converse rotating force.
The shape of permanent magnet, adopts trapezoidal shape, obtains breakdown torque with minimum cost.Permanent magnet is circularly and evenly distributed, and N, S pole alternately, adds up to even number.
Center fixed block is rectangular shape, good processing technology, and in use, centrifuge arm is an opposite side two, and connecting rod is another opposite side two, adopts symmetrical structure design, ensures dynamic balancing.
The connection of central shaft and load flange, uses screw bolt and nut, increases structural strength.Central shaft is one section of hollow structure, for bearing axle provides space, structurally comparatively simplifies, alleviates weight, and add structural strength.
The drive end of shaft coupling and driven end are all use flange and expansion set, and add that drive end uses screw to connect, driven end uses bolt and nut to connect; Both achieve the fast-assembling and quick detach that shaft coupling and equipment assembles.In use, this function improves the efficiency of assembling, and when keeping in repair, can save time.
This practical patent not only achieves the basic function of permanent magnet eddy current coupling, transmitting torque; Also achieving the soft start in transmission process and be flexible coupling, realizing defencive function when transshipping.Compare other kind shaft couplings, not only powerful, and also structurally simply, lightweight, the life-span is long, in use facilitates, efficiency is high.Can be widely used in the industry such as oil, chemical industry, electric power, prospect is extensive.
Accompanying drawing explanation
Fig. 1 is main structure chart of the present utility model.
Fig. 2 is permanent magnet distribution and connecting plate schematic diagram in conductor disc rotor.
Fig. 3 is conductor disc rotor schematic diagram.
Fig. 4 is permanent magnet rotor schematic diagram.
Fig. 5 is the linkage rod slide block mechanism schematic diagram that permanent magnet rotor regulates air gap.
Fig. 6 is guiding and the bronze bushing schematic diagram of main transmission bearing pin.
Fig. 7 is fixed block and centrifuge arm status architecture schematic diagram.
Wherein, 1. motor shaft flange; 2. expansion set; 3. soket head cap screw one; 4. the left dish of conductor carrier; 5. counterbore screw; 6. copper dish; 7. connecting plate; 8. the right dish of conductor carrier; 9. bolt one; 10. nut one; 11. load flanges; 12. bolts two; 13. nuts two; 14. central shafts; 15. keys; 16. fixed blocks; 17. axle positioning sleeves; 18. central shaft end caps; 19. soket head cap screws two; 20. permanent magnets; The left carrier of 21. permanent magnet; 22. left carrier liner; 23. right carrier liner; The right carrier of 24. permanent magnet; Hexagonal axis rotator bolt one in 25.; 26. pads; 27. connecting rods; Hexagonal axis rotator bolt two in 28.; 29. nuts three; 30. slide blocks; 31. bronze bushings; 32. main transmission bearing pins; 33. hold out against screw; 34. centrifuge arm pins; 35. centrifuge arms; 36. wind springs; 37. air gaps.
Embodiment
Further illustrate this use is novel below in conjunction with drawings and Examples.
As shown in Figure 1, soft start permanent magnet eddy-current coupling, comprises conductor disc rotor 50, permanent magnet rotor 60.Described conductor disc rotor 50 is connected with motor shaft, and fixed by the fastening motor shaft flange 1 of expansion set 2, coaxial line is installed.The moment of torsion of motor and rotating speed are delivered to conductor disc rotor 50, identical before and after both sizes.Described permanent magnet rotor 60 is inner at conductor disc rotor 50, and coaxial line is installed, and allows general difference.Described copper dish 6 has air gap 37 to exist with permanent magnet 20 in the axial direction, there is speed discrepancy.Described permanent magnet rotor 60 inside by the swing of connecting rod 27, can realize the change of air gap 37.Described permanent magnet rotor 60 is connected with bearing axle, and coaxial line is installed, and fixed by the fastening load flange 11 of expansion set 2, both torque and rotational speed are all identical.
As shown in Figure 3, described conductor disc rotor 50 has expansion set 2, motor shaft flange 1, and coil 4,8 about conductor carrier, copper dish 6 and connecting plate 7 form.Described motor shaft flange 1 is connected by soket head cap screw 1 with the left dish 4 of conductor carrier.Described copper dish 6 is ring-type, coils 4,8 on about abutting against conductor carrier by the screw 5 that ring internal-and external diameter is alternate.Coil about described conductor carrier and 4,8 to be connected by connecting plate 7, by bolt 1 and nut 1 fastening.
As shown in Figure 4, described permanent magnet rotor 60 is made up of central shaft 14, fixed block 16, permanent magnet 20, left 21 right 24 carriers of permanent magnet, left 22 right 23 carrier liner, upper and lower strut 27, front and back centrifuge arm 35, expansion set 2 and load flange 11 etc.; Described central shaft 14 is connected with load flange 11, is fixed by bolt 2 12 and nut 2 13.Described fixed block 16 is fixing on a central shaft 14; In the axial direction described, right-hand member utilizes the shaft shoulder location fixed block 16 of central shaft 14, and left end uses axle positioning sleeve 17 and locates fixed block 16 by the fastening central shaft end cap 18 on center shaft of soket head cap screw 2 19; Diametrically described, utilize two key 15 carry-over moments.
Described permanent magnet 20 is embedded on permanent magnet left and right carrier 21,24, and there is left and right carrier liner 22,23 at carrier 21,24 back side, described permanent magnet left and right, on above being fixed by screws in.As shown in Figure 5, the hole in the middle of described connecting rod 27 is fixed on fixed block 16 by hexagonal axis rotator bolt 1, phase-contact surface is added with pad 26 and reduces friction.There is holes at described connecting rod 27 two ends respectively, are installed with hexagonal axis rotator bolt 2 28 and are connected with left and right carrier liner 22,23.Described hexagonal axis rotator bolt 2 28 plays bearing pin, and is used in combination with nut 3 29.Described hexagonal axis rotator bolt 2 28 contacts with left and right carrier liner 22,23 part, adds a slide block 30.As shown in Figure 6, the motion guide of described permanent magnet left and right carrier 21,24 is the four main transmission bearing pin axles 32 be fixed on fixed block 16, and main transmission bearing pin 32 is connected with fixed block 16 by holding out against screw 33.Described four main transmission bearing pins 32 have relative sliding with permanent magnet left and right carrier 21,24, and left and right carrier liner 22,23 adds bronze bushing 31.The change maximum of described air gap 37, the extreme position that permanent magnet carrier 21,24 moves is located by the shaft shoulder of central shaft 14, and also there is the effect of location the outer ring of end cap 18.As shown in Figure 7, described liner plate is equipped with centrifuge arm 35, is connected with left and right carrier liner 22,23 by bearing pin 34, bearing pin 34 is equipped with symmetrical wind spring 36, makes centrifuge arm 35 operationally reach preposition.
As shown in Figure 2,3, connecting plate 7 has shallow slot for centre, increases inner space when proof strength, and the narrow structure in wide centre, two ends increases the maximum of carry-over moment.The structure of four pieces of connecting plates 7 provides enough large attaching space for conductor disc rotor 50 is inner with outside air, and internal temperature is stablized, and connecting plate 7 strip, rotates the flowing accelerating air, add heat exchange, also for the stable of temperature provides condition.
As shown in Figure 2,4, the size of permanent magnet 20 and quantity and installation dimension are determined according to designing requirement, and quantity is even number.The internal-and external diameter of copper dish 6 is determined according to the maximum internal-and external diameter of the installation of permanent magnet 20; About 27 two, connecting rod, intersects and installs, can reach dynamic balancing after rotation; Centrifuge arm 35 former and later two, symmetrical install, ensure dynamic balancing, the length of centrifuge arm 35 changes according to startup requirement.
As shown in Figure 3,4, expansion set 2 can Fast Installation and dismounting.Soket head cap screw 3 can directly be installed, for fast-assembling and quick detach provide condition.Bolt 2 12 and nut 13, for the overhanging part of permanent magnet rotor 60 provides structural strength, achieve fast-assembling and the quick detach of shaft coupling jointly with expansion set 2 and soket head cap screw 3.
About conductor carrier, dish 4,8 and left and right carrier liner 22,23 are all the good mild steel of magnetic conduction, and intensity is higher, for transmitting torque and rotating speed provide knot enough intensity, also for magnetic induction line provides path, make copper dish 6 region have stronger magnetic flux density.
In link gear, the use modified line contact of slide block 30 is face contact as shown in Figure 5, and enlarge active surface, reduces friction, increase the service life.
As shown in Figure 6, main transmission bearing pin 32, not only has the effect of driving torque, also has the effect of guiding.Bronze bushing 31, making internal structure friction when moving less, adding fast-response, increasing the service life.
As shown in Figure 4 in inactive state, due to the attraction of conductor carrier 4,8 in permanent magnet 20 pairs of conductor rotor, air gap 37 remains on minimum state, the solid line state of centrifuge arm 35 in Fig. 4.When after electric motor starting, conductor rotor part 50 starts with identical rotating speed with motor simultaneously; Permanent magnet rotor 60 is delayed, relative rotation speed difference is very large, the magnetic induction line that copper dish 6 produces with maximum speed discrepancy cutting permanent magnet 20, now because speed discrepancy is comparatively large, the torque produced is not only maximum, the repulsion produced also is maximum, when the repulsion produced is greater than the attraction of permanent magnet 20 pairs of copper dish carriers 4,8,21,24 liang, permanent magnet carrier dish starts close, because suffered power is symmetrical, cancelling out each other in inside, does not affect to external world.And centrifuge arm 35 is at straight configuration, as the dashed lines states of centrifuge arm in Fig. 4 35, ensure that the size of air gap 37 is not very large; Permanent magnet rotor 60 starts to accelerate, and while acceleration, the relative rotation speed of conductor disc rotor 50 and permanent magnet rotor 60 starts to reduce; When the repulsion produced by speed discrepancy is less than the attraction of dish 4,8 about permanent magnet 20 pairs of conductor carriers, in permanent magnet rotor 60, two permanent magnet left and right carriers 21,24 are separated.Because there is the existence of speed discrepancy, permanent magnet rotor 60 is being accelerated always, when arriving of air gap 37 reduction is minimum, when speed discrepancy is reduced to the torque that can provide required for load, has now started.When in start-up course, the centrifuge arm 35 in permanent magnet rotor 60, very fast owing to rotating, when the moment that produced centrifugal force is formed is greater than the moment of wind spring 36 to it, centrifuge arm 35 just leans against on left carrier liner 22.
The process started, owing to being accelerate slowly, achieving soft start, avoids the generation of the peak current of motor.In normal work; run into suddenly stuck or unexpected stress state time; speed discrepancy strengthens rapidly; the repulsion produced coils the attraction of 4,8 about being greater than suddenly permanent magnet 20 pairs of conductor carriers; in permanent magnet rotor 60, two permanent magnet left and right carriers 21,24 are drawn close rapidly; centrifuge arm 35 is due to delayed; also do not stretch; so permanent magnet left and right carrier 21,24 can be drawn close; make air gap 37 maximum; the magnetic flux density in copper dish 6 region is less, and the moment that can transmit is almost nil, reaches the effect of overload protection.

Claims (5)

1. a soft start permanent magnet eddy current coupling, comprises two large divisions, conductor disc rotor and permanent magnet rotor; Conductor disc rotor is drive end, is connected with motor shaft; Permanent magnet rotor is driven end, is connected with bearing axle; Both connections all use expansion set flange arrangement, realize fast mounting-dismounting function; The magnetic induction line that conductor disc cutting permanent magnet produces, produces vortex flow, forms dislike magnetic field, with former magnetic field interaction, produce the effect of torque; Wherein conductor disc rotor is in outside, and permanent magnet rotor is in inside; The adjustment of air gap is realized by the axial distance change of two permanent magnet carriers in permanent magnet rotor.
2. a kind of soft start permanent magnet eddy current coupling as claimed in claim 1, it is characterized in that, in described conductor disc rotor, the connection of two pieces of conductor carrier dishes uses centre to open the connecting plate of shallow slot, while guarantee width, the groove that the back side is opened too increases inner space, weight reduction, improves the utilance in space; The narrow shape in wide centre, two ends of connecting plate, makes the moment transmitted compared with small size connecting plate improve; Four pieces of connecting plates, make the integrally-built face of cylinder have larger space, in shaft coupling operation process, temperature is stablized, and the rotation of connecting plate also can drive the flowing of air, and the heat exchange of the inside and outside of shaft coupling is accelerated.
3. a kind of soft start permanent magnet eddy current coupling as claimed in claim 1, is characterized in that, the shape of described permanent magnet, adopts trapezoidal shape, obtains breakdown torque with minimum cost; Permanent magnet is circularly and evenly distributed, and N, S pole alternately, adds up to even number.
4. a kind of soft start permanent magnet eddy current coupling as claimed in claim 1, is characterized in that, the interlock of two blocks of permanent magnet carriers, employs laterally zygomorphic two connecting rods; Be arranged on the connecting rod on fixed block, the contrary axial force of shaft coupling internal direction is cancelled out each other, eliminate impact to external world; Upper and lower symmetrical two ensure that dynamic balancing; The connection of connecting rod and liner plate is hexagonal axis rotator bolt and slide block, because will relatively rotate, certainly has the use of pin, in the groove slided, uses slide block, adds contact area; Make stress surface more even, reduce friction, increase the service life.
5. a kind of soft start permanent magnet eddy current coupling as claimed in claim 1, it is characterized in that, four motions of the axis of guide to two permanent magnet carriers be fixed on fixed block have guide effect; Due to guiding movement, there is friction, add a fairlead, make less traction in the hole of permanent magnet load plate between contact-making surface, motor imagination is more quick, long service life.
CN201420655163.9U 2014-11-05 2014-11-05 A kind of soft start permanent magnet eddy current coupling Expired - Fee Related CN204103739U (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026612A (en) * 2016-05-20 2016-10-12 上海市东方海事工程技术有限公司 Totally-closed foreign material invasion prevention torque-limited permanent magnet coupler
CN109921602A (en) * 2019-04-08 2019-06-21 湖南中特液力传动机械有限公司 Magnetic coupling delay start method and delaying type magnetic coupling
CN110336434A (en) * 2019-07-03 2019-10-15 南京渥孚磁动力科技有限公司 A kind of two-sided transmission permanent-magnet eddy current magnetic hysteresis shaft coupling
CN112260481A (en) * 2020-09-25 2021-01-22 湖南中特液力传动机械有限公司 Connecting support for heat dissipation of disc type torque-limiting permanent magnet coupler and permanent magnet coupler
CN112737276A (en) * 2020-12-15 2021-04-30 山西江淮重工有限责任公司 Main shaft structure of torque-limiting permanent magnet eddy current transmission device
CN113659801A (en) * 2021-10-19 2021-11-16 北京巴什卡科技有限公司 Eddy current permanent magnet coupler installed at short shaft end distance

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026612A (en) * 2016-05-20 2016-10-12 上海市东方海事工程技术有限公司 Totally-closed foreign material invasion prevention torque-limited permanent magnet coupler
CN109921602A (en) * 2019-04-08 2019-06-21 湖南中特液力传动机械有限公司 Magnetic coupling delay start method and delaying type magnetic coupling
CN109921602B (en) * 2019-04-08 2023-12-29 湖南中特液力传动机械有限公司 Delayed starting method of magnetic coupler and delayed magnetic coupler
CN110336434A (en) * 2019-07-03 2019-10-15 南京渥孚磁动力科技有限公司 A kind of two-sided transmission permanent-magnet eddy current magnetic hysteresis shaft coupling
CN110336434B (en) * 2019-07-03 2024-03-12 南京渥孚磁动力科技有限公司 Double-sided transmission permanent magnet eddy hysteresis coupling
CN112260481A (en) * 2020-09-25 2021-01-22 湖南中特液力传动机械有限公司 Connecting support for heat dissipation of disc type torque-limiting permanent magnet coupler and permanent magnet coupler
CN112737276A (en) * 2020-12-15 2021-04-30 山西江淮重工有限责任公司 Main shaft structure of torque-limiting permanent magnet eddy current transmission device
CN112737276B (en) * 2020-12-15 2022-11-01 山西江淮重工有限责任公司 Main shaft structure of torque-limiting permanent magnet eddy current transmission device
CN113659801A (en) * 2021-10-19 2021-11-16 北京巴什卡科技有限公司 Eddy current permanent magnet coupler installed at short shaft end distance

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