CN202721593U - Controllable magnetic soft starting device - Google Patents

Controllable magnetic soft starting device Download PDF

Info

Publication number
CN202721593U
CN202721593U CN 201220278241 CN201220278241U CN202721593U CN 202721593 U CN202721593 U CN 202721593U CN 201220278241 CN201220278241 CN 201220278241 CN 201220278241 U CN201220278241 U CN 201220278241U CN 202721593 U CN202721593 U CN 202721593U
Authority
CN
China
Prior art keywords
soft starting
actuating unit
disc
driving disc
permanent magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN 201220278241
Other languages
Chinese (zh)
Inventor
郭永存
程刚
胡坤
王鹏彧
宋维新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui University of Science and Technology
Original Assignee
Anhui University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui University of Science and Technology filed Critical Anhui University of Science and Technology
Priority to CN 201220278241 priority Critical patent/CN202721593U/en
Application granted granted Critical
Publication of CN202721593U publication Critical patent/CN202721593U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model belongs to the field of engineering machinery equipment, and particularly relates to a controllable magnetic soft starting device. The controllable magnetic soft starting device comprises a driving disc which is fixedly connected with an input shaft and a driven disc which is used for connecting an output shaft. The driven disc is coaxial with the driving disc and has opposite disc face arrangement. A gap is existed between opposite faces of the driving disc and the driven disc, one face is provided with a permanent magnet, and the other face is provided with a metal conductive body. The disc face where the permanent magnet is located is divided with an area used for placing the permanent magnet, each area is in outward divergent arrangement from a disc face axis center, and magnets in adjacent areas are in magnetic dissimilarity arrangement in a direction parallel with a disc body axis direction. The soft starting device comprises a power mechanism used for carrying out same direction or opposite direction movement between the driving disc and the driven disc. According to the controllable magnetic soft starting device, functions of start-stop, stepless speed regulation, multiple drive balance, overload self-protection and the like can be realized, the device has the advantages of high transmission efficiency, strong environmental adaptation, stable operation, easy localization, simple structure, convenient and reliable use, and a wide market application prospect.

Description

A kind of magnetic force soft starting device of controlling
Technical field
The utility model belongs to the engineering machinery field, is specifically related to a kind of magnetic force soft starting device of controlling.
Background technology
Current China economy has entered a new developing stage; large enterprise and Large-Scale Equipment are more and more; (application of 5000kW~60000kW) is more and more for large-size machine; the starting method of large-size machine also more and more is subject to people's attention; the value of ultra-large type motor is all very high; also all play aborning central role, its point failure just can cause very large economic loss, adopts perfect protection to be very important to it.Often there are various defectives in the direct Starting mode of existing motor, or causes voltage ripple of power network, and impact is with the operation of electrical network miscellaneous equipment; Or the Joule heat repeated action that its large electric current produces makes insulation accelerated aging, life-span reduction in the wire external insulation; The mechanical force that large electric current produces makes the mutual friction of wire phase, reduces insulation life; On the other hand, its large electric current produces very large impulsive force at coil of stator of motor and rotor squirrel-cage bar, can cause the faults such as clamping is loosening, winding deformation, squirrel-cage bar fracture; Simultaneously, starting torque during the across-the-line starting of large-size machine total head is approximately 2 times of nominal torque, so large moment is added in suddenly on the static plant equipment, and the meeting accelerating gear weares and teares even beats tooth, accelerates the belt wearing and tearing even break belt, acceleration fan blade fatigue even the fan blade etc. that fractures.When adopting decompression starting, an above-mentioned harm decrease to some degree; When adopting soft start, above-mentioned harm almost completely disappears, and therefore, the soft start operation mode of existing large-size machine is accepted by existing market gradually.
For above-mentioned situation, the application people is that " magnetic drive device " (patent No.: utility model patent 05505011.6) has been announced following technology contents: comprise driving wheel and the follower of coaxial alternate setting with it, be embedded with permanent magnet at both adjacent surface for the patent name of Wang Shujun.Technique scheme is flexible coupling by the magnetic attraction between the employing principal and subordinate wheel, thereby realizes that driven pulley can move immediately in the driving wheel action, thereby realizes its soft start effect; When said structure uses in reality, itself highlights day by day to fault of construction: on the one hand, the N utmost point of simple dependence driving wheel removes directly to attract and guide the S utmost point of driven pulley between two permanent magnets, also namely simple its effect that there is a natural attraction between the sexes that relies on realizes its interlock purpose, cause its driving torque little, only can be applicable in the little moment environment, use limitation thereby exist; On the other hand, two permanent magnet spacings are always steady state, that is to say that the moment of its transmission is always a steady state value, and when this was applied to the occasion of some need changing torque work at it, said structure just obviously can't be competent at; Even use reluctantly, also can only solve by the mode that increases a plurality of different moment equipment and matching component, virtually namely increased the cost of investment of enterprise, thereby its actual productivity effect has been produced greatly impact.
The utility model content
The purpose of this utility model provides a kind of magnetic force controlled simple in structure soft starting device, and it can realize the adjustable operation of output torque.
For achieving the above object, the utility model has adopted following technical scheme: a kind of magnetic force soft starting device of controlling, the driving disc spacing pressing and the clutch plate for the output shaft of plugging into coaxial with it and that card arranges in opposite directions that comprise affixed power shaft, have spacing between the forward surface of master and slave Moving plate and wherein simultaneously locate to be provided with permanent magnet, its corresponding another side place arranges metallic conductor; Described permanent magnet place card is divided and is useful on the zone of arranging permanent magnet, each zone be by the card axle center outside disperse planar layout, the magnetic different layout of the magnet between each adjacent area on parallel its disk body axis direction; Soft starting device also comprises actuating unit, and actuating unit when action, driving disc spacing pressing and clutch plate intercropping are in opposite directions or from action.
Major advantage of the present utility model is: rely on actuating unit to move to drive master and slave Moving plate and do relative motion, thereby make it between the two apart from changing, and then its both field of forces are changed, finally realize by the moment adjustability of power shaft to output shaft; During actual the use, spacing distance is arranged between the permanent magnet that the employing pole piece spacing is arranged and metallic conductor, when permanent magnet rotating, produce the magnetic field eddy current effect between itself and metallic conductor, at this moment, the relative metallic conductor motion of permanent magnet, metallic conductor cuts its magnetic line of force and produces eddy current, eddy current forms magnetic field, with the magnetic field interaction of magnet, produce relative active force, speed is faster, strength is more obvious, finally reaches to drive the purpose that metallic conductor also is the output shaft action; Adopt metallic conductor to replace old-fashioned opposite pole herein; then make it main; change the magnetic field eddy current turn of more easily controlling into by traditional simple magnetic attraction drive between clutch plate; thereby guarantee its actual operational paradigm; realize changing the two magnetic pole fit systems that produce the moment change because of relative distance compared to traditional being difficult to; magnetic of the present utility model; the metal fit system; obviously more can satisfy the adjustable force moment propagation function in the little spacing range; thereby realize that it opens braking; stepless speed regulation; many driven equilibriums; the functions such as overload self-protection; has transmission efficiency high; conform strong; the characteristics that operate steadily and be easy to domesticize; it is simple in structure and easy to use and reliable, and market application foreground is wide.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the distribution schematic diagram for permanent magnet on the driving wheel.
Embodiment
A kind of magnetic force soft starting device of controlling, the driving disc spacing pressing 30 and the clutch plate 40 for the output shaft 20 of plugging into coaxial with it and that card arranges in opposite directions that comprise affixed power shaft 10, have between master and slave Moving plate 30,40 forward surface spacing and wherein the one side place be provided with permanent magnet 50, its corresponding another side place arranges metallic conductor 60; Described permanent magnet 50 place cards are divided and are useful on the zone of arranging permanent magnet 50, each zone be by the card axle center outside disperse planar layout, the magnetic different layout of the magnet between each adjacent area on parallel its disk body axis direction; Soft starting device also comprises actuating unit, and actuating unit when action, driving disc spacing pressing 30 and clutch plate 40 intercropping are in opposite directions or from action, specifically shown in Fig. 1-2.
As further preferred version of the present utility model: described permanent magnet 50 is arranged on the driving disc spacing pressing 30, and its metallic conductor 60 is the copper sheet dish, and described metallic conductor 60 is arranged at clutch plate 40 card places; Like this, at first realize magnetic field intercepts effect for 50 of permanent magnets being preferably the copper sheet dish during actual the use by the metal dish that adopts the electric conductivity excellence; In addition, described metallic conductor 60 is formed by stacking along its axial direction for the copper sheet of plural even thickness, that is to say and adopt the same thin magnetic links of multi-layer phase to be formed by stacking, then be to have guaranteed that the magnetic strength eddy current heat energy that the copper sheet dish produces when the high-speed cutting magnetic line of force can distribute rapidly, thereby avoid its work superheating phenomenon; The actual arrangement number of its permanent magnet 50 can be decided according to on-site situation, its material can be the neodymium iron boron powerful permanent, the utility model is preferably permanent magnet 50 numbers to be 6~20 and to be by the outside divergent shape in its axle center and to be distributed on driving disc spacing pressing 30 cards, and arrangement can be with reference to shown in Figure 2.
Further, be specific implementation master of the present utility model, clutch plate 30,40 spacing adjustability, as shown in Figure 1, described soft starting device comprises housing 80, output shaft 20 and power shaft 10 all corresponding being arranged on the housing 80 and with its formation are rotatably assorted, described master, clutch plate 40 and actuating unit all are arranged in the housing 80, described actuating unit comprises for connecting the power transmission shaft 71 of driving disc spacing pressing 30 with power shaft 10, affixed driving disc spacing pressing 30 cards of one end of described power transmission shaft 71 and with the coaxial setting in its axle center, but its other end along its axially postpone and with 10 of power shafts its sliding insertings that axially consist of reciprocating action close and its week upwards formation cooperate in order to locate both spacing.Actual further is configured to: the end that cooperates with power transmission shaft 71 on the described power shaft 10 is provided with countersink region 21 along its axial indent, described countersink region 21 inwalls circumferentially are evenly equipped with spline, the corresponding mating surface place of power transmission shaft 71 is furnished with spline, consists of spline fitted between the two.Like this, when external module at first is with driven input shaft 10 action that rotates, its moment is conveyed to output shaft 20 by master and slave Moving plate 30,40 non-rigid transfer function, finally realizes its transmission of power function; And when some needs the occasion of timely adjustment output torque, by operational power mechanism, impel driving disc spacing pressing 30 to produce along its axial vibration action, spline is chimeric to be cooperated owing to affixed power transmission shaft 71 on the driving disc spacing pressing 30 exists with 10 of power shafts all the time, that is to say, the axial motion of driving disc spacing pressing 30 is only for relatively approaching of producing of clutch plate 40 or away from action, and for the power of power shaft 10 itself directly transmission have no effect; Like this, when above-mentioned action executing, power shaft 10 still directly is transmitted to driving disc spacing pressing 30 with outside moment, and because the spacing of 40 of driving disc spacing pressing 30 and clutch plates has produced variation, the corresponding appearance of its magnetic strength eddy current between the two changes, finally cause relativity power between the two to change, the output torque of the output shaft 20 that is connected with clutch plate 40 is changed.The controllable adjustment effect of the utility model by actuating unit, realizes by the nonrigid stepless time adjustment function of power shaft 10 to output shaft 20 places finally that overall work is reliable and stable to realize master and slave Moving plate 30,40 spacing adjustability.
Further, be specific implementation actuating unit structure, it is described as follows: as shown in Figure 1 herein, actuating unit is single pole bidirectional piston cylinder, power transmission shaft 71 consists of the piston rod of actuating unit, described actuating unit also comprises the piston/cylinder 72 with the affixed setting of housing 80 inwalls, on the described power transmission shaft 71 piston portion 73 is set, and actuating unit is by outside oil circuit drive actions; Described power transmission shaft 71, piston portion 73 and 72 of piston/cylinders all are furnished with the wear-resistant seal circle.In fact, actuating unit can be regarded as the whole piston cylinder assembly that forms, pumping effect by outside oil circuit, thereby realize the two-stroke operation of piston cylinder assembly, and then to make its power transmission shaft 71(also be piston rod) produce along its axial vibration action, its actuating unit possessed drive and regulate master and slave Moving plate 30,40 function, reaching its controlled speed governing purpose.
Further, housing 80 profiles are hollow cylindrical and comprise the left side of the opposed cooperation in the left and right sides, right shell body 81,82, output shaft 20 is arranged on its left shell 81 end faces and power shaft 10 corresponding its right shell body 82 ends that are arranged in, described right shell body 82 end faces cave in to postpone to its housing 80 inside along its axis annular projection 82a, described annular projection 82a inwall is that shoulder hole and its large end are positioned at place, right shell body 82 outer faces, consist of between countersink region 21 outer walls on the described power shaft 10 and the large end inwall of annular projection 82a and be rotatably assorted, consist of embedded affixed the cooperation between the piston/cylinder 72 on the described actuating unit and the small end inwall of annular projection 82a; Described right shell body 82 is provided with end cap portions 82b at its large end face place, and end cap portions 82b profile is recessed plate-like and cover is established the setting of the large stomidium of annular projection 82a section, and described output shaft 20 runs through end cap portions 82b axle center and is provided with the wear-resistant seal circle between the two.For increasing the working strength of annular projection 82a, described soft starting device is provided with the reinforcement gusset between annular projection 82a outer wall and housing 80 inwalls.
Further, the utility model also provides a kind of oil circuit assembly be used to realizing the accurate adjustability of above-mentioned actuating unit, be specially: described soft starting device also comprises for the oil circuit assembly 90 that drives the actuating unit action, described oil circuit assembly 90 comprises middle envelope formula 3-position 4-way proportioning valve 91, the A of 3-position 4-way proportioning valve 91, the B end connects respectively one of them hydraulic cavities of the piston/cylinder 72 on the actuating unit, its 0 end connects oil cylinder, its P end is communicated with hydraulic pump 92 successively to the oil cylinder place, described soft starting device also comprises control part, control part control 3-position 4-way proportioning valve 91 is done the commutation action, and its each port indication as shown in Figure 1.
Further, the transducer 100a that described control part comprises industrial computer 100b and is arranged at housing 80 inwall places, be between described transducer 100a and housing 80 inner each parts and dodge the position, industrial computer 100b then can pre-enter some control system parameters by panel, such as power division of start-up time, low cruise time, each drive motors etc.; During work, transducer 100a receives driving disc spacing pressing 30 operate conditions, sends a signal to industrial computer 100b and processes, and industrial computer 100b sends process information to 3-position 4-way proportioning valve 91 places and controls it and do corresponding commutation action.
The utility model in use, power shaft 10 is subject to the driving disc spacing pressing 30 that the torque of power source drives with permanent magnet 50 and rotates, initial condition is the motion that static clutch plate 40 is namely done relative cutting magnetic field thereupon, because magnetic strength eddy current effect, clutch plate 40 begins to do the synchronous rotation identical with driving disc spacing pressing 30, thereby realizes the soft propagation function of moment between the two; Because above-mentioned both drive for the magnetic strength eddy current, therefore, the among a small circle space change that clutch plate 40 is done with driving disc spacing pressing 30 namely can affect the level of torque that clutch plate 40 obtains: the utility model is according to pre-enter the control signal at industrial computer 100b place and the signal that transducer 100a collects in good time, by industrial computer 100b computing, send the left and right sides aperture direction of 3-position 4-way proportioning valve 91 valve ports in the continuous regulator solution pressing system of instruction, the power transmission shaft 71 that 91 actions of 3-position 4-way proportioning valve drive again on the actuating unit accordingly produces along its axial vibration action, and then reach the purpose of the center clearance between accurate change clutch plate 40 and the permanent magnet 50, with this balance of obtaining required operating mode driving torque and realizing many powers of motor.Magnetic, the metal fit system of realizing with the magnetic strength vortex principle of the present utility model; can in little spacing range, can possess accurate adjustable force moment propagation function; it has the several functions such as the braking of opening, stepless speed regulation, many driven equilibriums, overload self-protection; its transmission efficiency is high, it is strong, simple in structure and easy to use and reliable to conform, and market application foreground is wide.

Claims (10)

1. can control the magnetic force soft starting device for one kind, it is characterized in that: the driving disc spacing pressing (30) and the clutch plate (40) for output shaft (20) of plugging into coaxial with it and that card arranges in opposite directions that comprise affixed power shaft (10), have spacing between the forward surface of master and slave Moving plate (30,40) and wherein simultaneously locate to be provided with permanent magnet (50), its corresponding another side place arranges metallic conductor (60); Described permanent magnet (50) place card is divided and is useful on the zone of arranging permanent magnet (50), each zone be by the card axle center outside disperse planar layout, the magnetic different layout of the magnet between each adjacent area on parallel its disk body axis direction; Soft starting device also comprises actuating unit, and actuating unit when action, driving disc spacing pressing (30) and clutch plate (40) intercropping are in opposite directions or from action.
2. soft starting device according to claim 1, it is characterized in that: described permanent magnet (50) is arranged on the driving disc spacing pressing (30), and its metallic conductor (60) is the copper sheet dish, and described metallic conductor (60) is arranged at clutch plate (40) card place.
3. soft starting device according to claim 2, it is characterized in that: described metallic conductor (60) is formed by stacking along its axial direction for the copper sheet of plural even thickness.
4. it is characterized in that according to claim 1 and 2 or 3 described soft starting devices: permanent magnet (50) number is 6~20 and is by the outside divergent shape in its axle center and is distributed on driving disc spacing pressing (30) card.
5. soft starting device according to claim 4, it is characterized in that: described soft starting device comprises housing (80), output shaft (20) and power shaft (10) all corresponding housing (80) that is arranged in upward and with its formation are rotatably assorted, described master, clutch plate (40) and actuating unit all are arranged in the housing (80), described actuating unit comprises for connecting the power transmission shaft (71) of driving disc spacing pressing (30) with power shaft (10), the affixed driving disc spacing pressing of one end (30) card of described power transmission shaft (71) and with the coaxial setting in its axle center, its other end along its axially postpone and with power shaft (10) but between its sliding inserting that axially consists of reciprocating action close and power shaft (10) week upwards formation cooperate in order to locate both spacing.
6. soft starting device according to claim 5, it is characterized in that: the upper end that cooperates with power transmission shaft (71) of described power shaft (10) is provided with countersink region (21) along its axial indent, described countersink region (21) inwall circumferentially is evenly equipped with spline, the corresponding mating surface place of power transmission shaft (71) is furnished with spline, consists of spline fitted between the two.
7. soft starting device according to claim 6, it is characterized in that: actuating unit is single pole bidirectional piston cylinder, power transmission shaft (71) consists of the piston rod of actuating unit, described actuating unit also comprises the piston/cylinder (72) with the affixed setting of housing (80) inwall, piston portion (73) is set on the described power transmission shaft (71), actuating unit all is furnished with the wear-resistant seal circle by outside oil circuit drive actions between described power transmission shaft (71), piston portion (73) and piston/cylinder (72).
8. soft starting device according to claim 7, it is characterized in that: housing (80) profile is hollow cylindrical and comprises the left side of the opposed cooperation in the left and right sides, right shell body (81,82), output shaft (20) is arranged on its left shell (81) end face and corresponding its right shell body (82) end that is arranged in of power shaft (10), described right shell body (82) end face caves in to postpone to its housing (80) inside along its axis has annular projection (82a), described annular projection (82a) inwall is that shoulder hole and its large end are positioned at place, right shell body (82) outer face, consist of between countersink region (21) outer wall on the described power shaft (10) and the large end inwall of annular projection (82a) and be rotatably assorted, consist of embedded affixed the cooperation between the small end inwall of the piston/cylinder on the described actuating unit (72) and annular projection (82a).
9. soft starting device according to claim 8, it is characterized in that: described right shell body (82) is provided with end cap portions (82b) at its large end face place, end cap portions (82b) profile is recessed plate-like and cover is established the setting of the large stomidium section of annular projection (82a), and described power shaft (10) runs through end cap portions (82b) axle center and is provided with the wear-resistant seal circle between the two.
10. soft starting device according to claim 7, it is characterized in that: described soft starting device also comprises for the oil circuit assembly (90) that drives the actuating unit action, described oil circuit assembly (90) comprises middle envelope formula 3-position 4-way proportioning valve (91), the A of 3-position 4-way proportioning valve (91), the B end connects respectively one of them hydraulic cavities of the piston/cylinder (72) on the actuating unit, its O end connects oil cylinder, its P end is communicated with hydraulic pump (92) successively to the oil cylinder place, described soft starting device also comprises control part, and control part control 3-position 4-way proportioning valve (91) is done the commutation action; The transducer (100a) that described control part comprises industrial computer (100b) and is arranged at housing (80) inwall place, be between inner each parts of described transducer (100a) and housing (80) and dodge the position, described transducer (100a) receives driving disc spacing pressing (30) operate condition, send a signal to industrial computer (100b) and process, industrial computer (100b) sends process information to 3-position 4-way proportioning valve (91) and locates and control it and do corresponding commutation action.
CN 201220278241 2012-06-13 2012-06-13 Controllable magnetic soft starting device Withdrawn - After Issue CN202721593U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220278241 CN202721593U (en) 2012-06-13 2012-06-13 Controllable magnetic soft starting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220278241 CN202721593U (en) 2012-06-13 2012-06-13 Controllable magnetic soft starting device

Publications (1)

Publication Number Publication Date
CN202721593U true CN202721593U (en) 2013-02-06

Family

ID=47623396

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220278241 Withdrawn - After Issue CN202721593U (en) 2012-06-13 2012-06-13 Controllable magnetic soft starting device

Country Status (1)

Country Link
CN (1) CN202721593U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102710098A (en) * 2012-06-13 2012-10-03 安徽理工大学 Soft starting device capable of controlling magnetic force

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102710098A (en) * 2012-06-13 2012-10-03 安徽理工大学 Soft starting device capable of controlling magnetic force
CN102710098B (en) * 2012-06-13 2014-04-16 安徽理工大学 Soft starting device capable of controlling magnetic force

Similar Documents

Publication Publication Date Title
CN105958791B (en) A kind of magnet moves radially formula Adjustuble speed magnetic mechanical couple
CN104377923B (en) A kind of permanent-magnet speed governor of fixing magnetic gap
CN103441651B (en) A kind of multi-port energy conversion device
CN101488691B (en) Air gap variant eddy speed regulating induction motor and working mode
CN202721593U (en) Controllable magnetic soft starting device
CN203466696U (en) Multiport energy conversion device
CN102710098B (en) Soft starting device capable of controlling magnetic force
CN102367141A (en) Outer rotor switch magnetic resistance action drive device
CN204205912U (en) A kind of permanent-magnet speed governor of fixing magnetic gap
CN105006951A (en) Magnetic coupling transmission device running at constant power and adjustable speed
CN209375434U (en) A kind of cartridge type permanent-magnet speed governor installing end face guide vane additional
CN105099327A (en) Motor position control system based on power supply controller
CN202261134U (en) Outer rotor switch magnetic-resistance traction drive unit
CN204993021U (en) Magnetic coupling transmission of speed regulation by constant power operation and transmission of additional power
CN202160014U (en) Disk type magnetic motor with permanent magnets and electromagnets
CN204773701U (en) Disk linear electric motor driven multi -link press
CN204316295U (en) Pump speed governing three-phase permanent magnet synchronous motor
CN204205891U (en) A kind of permanent-magnet speed governor of fixing magnetic gap
CN204349761U (en) A kind of permanent-magnet speed governor of fixing magnetic gap
CN204349740U (en) A kind of permanent-magnet speed governor of fixing magnetic gap
CN207835334U (en) A kind of gear assembly of iron frame processing numerical control press
CN201994820U (en) Disc type magnetic motor
CN102624196B (en) Small-range electromagnetic eccentric magnetic gear pair with novel radial magnetic field
CN104362831B (en) A kind of permanent-magnet speed governor of fixing magnetic gap
CN207801734U (en) A kind of Wind-cooling type cartridge type permanent magnet clutch

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
RGAV Abandon patent right to avoid regrant
AV01 Patent right actively abandoned

Granted publication date: 20130206

Effective date of abandoning: 20140416