CN103532340A - Magnetism-adjustable permanent magnet eddy current governor - Google Patents
Magnetism-adjustable permanent magnet eddy current governor Download PDFInfo
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- CN103532340A CN103532340A CN201310511194.7A CN201310511194A CN103532340A CN 103532340 A CN103532340 A CN 103532340A CN 201310511194 A CN201310511194 A CN 201310511194A CN 103532340 A CN103532340 A CN 103532340A
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Abstract
The invention discloses a magnetism-adjustable permanent magnet eddy current governor which comprises a gear motor (1), an electric brush (2), a bevel gear mechanism (3), a bearing shaft (4), a slip ring (5), a right bearing (6), a cam rotor (7), a permanent magnet rotor right end cover (8), a right end ring (9), a permanent magnet rotor (10), a permanent magnet rotor left end cover (11), a lower magnetic ring (12), a left end cover (13), a left bearing (14), a driving shaft (15), an upper magnetic ring (16), a left end ring (17), a conducting bar (18) and a driving end iron core (19), wherein the gear motor (1) is mounted at an drive end of the cam rotor (7). According to the governor, gaps between the inner side of the permanent magnet rotor and the upper and the lower magnetic rings are adjusted through the cam rotor, and excitation capacity of the permanent magnet rotor is changed, so that the size of an air-gap field is changed, and purposes of torque coupling and speed regulation are achieved.
Description
Technical field:
What the present invention relates to is a kind of permanent-magnet eddy current speed regulating device, refers more particularly to a kind of permanent-magnet eddy current speed regulator that can adjustable magnetic, belongs to the technical field of vortex transmission.
Background technology:
Common mechanical transmission, mainly by modes such as chain drive, frictional drive, hydraulic drive, gear drive and belt-type transmissions, is directly connected to load on line shaft through plant equipment, and machine driving exists the problems such as mechanical wear, the higher-order of oscillation.In addition, although during electric motor starting, the peak value of starting current and institute's bringing onto load size are irrelevant, connect heavy load directly startup can extend the motor start-up time, increase that the motor feels hot and temperature rise, affect motor useful life.For fear of this problem, user increases as much as possible capacity motor when to choice of electrical machine, and this had both increased cost input one time, had caused again motor low load with strong power phenomenon, had reduced efficiency and the loss that increases electric power, waste mass energy.
Permanent magnetic vortex drive device can be isolated motor and driven shaft, reduce dither and noise, by permanent-magnet eddy current speed governing, reduced the harmful effect of load disturbance to machine operation point, greatly improve the operational efficiency of whole system, and there is long working life, do not have the advantage of harmonic pollution.And magnetic actuator can play the effect of soft start, strengthen the ability that motor bringing onto load starts.
The general structure of permanent-magnet eddy current transmission is: outside internal rotor inner side or external rotor, with Surface Mount or embedded mode, arrange the permanent magnet that magnetic pole is alternate, be called p-m rotor; Correspondingly, relative with permanent magnet is conductor rotor.P-m rotor and conductor rotor are coaxially settled, and all can freely independently rotate.
The operation principle of permanent-magnet eddy current transmission is: when motor driving shaft drives rotating conductor rotor, owing to existing relative motion between p-m rotor and conductor rotor, according to the law of electromagnetic induction, sliver in magnetic force line cutting conductor rotor, on sliver, produce moving raw electromotive force, under moving raw electromotive force excitation, produce eddy current, electric current produces simultaneously Induced magnetic field and permanent magnet magnetic field interactions, traction permanent magnetic rotor motion.By the two-way flow of energy, permanent magnet rotor also can be used as driving shaft, and conductor rotor is as driven shaft, and mode of speed regulation is identical.
The gas length that patent ZL200710134483.4 proposes by adjusting between p-m rotor and conductor rotor regulates air-gap field intensity, and the size of coupling torque is controlled, and reaches the object of load speed governing, and has proposed corresponding device---air gap adjuster.But in practical application, because gas length is original just little, scope is only between several millimeters to several centimetres, attraction between p-m rotor and conductor rotor is very large, the magnetic force that adjustment gas length will overcome is very large, not only this mechanism is difficult to realize, and the precision of air gap adjustment and smoothness can not be guaranteed.Can also adopt in addition the length of action of adjusting between p-m rotor and conductor rotor to regulate coupling torque size, thereby realize load speed governing, but along with p-m rotor area of contact reduces, outside part permanent magnet will be directly exposed to, it can attract metal fragment around, airborne magnetic dust, machine tool etc., these foreign material attracted to p-m rotor surface and even enter in working gas gap, will have a strong impact on the normal operation of speed regulator.
The present invention's employing neither changes working gas gap length and does not also change the way of p-m rotor area of contact, by the ingehious design to permanent-magnet eddy current speed regulator, air-gap field intensity is adjusted flexibly, reaches the stepless adjustment object of axle carry-over moment and speed.
Summary of the invention:
Technical problem: it is large that the technical issues that need to address of the present invention are to provide a kind of transmitted power, output torque adjustment scope is large, unit volume is exerted oneself many, and can adjust in real time operating mode (comprising torque rotary speed and power output) can adjustable magnetic permanent-magnet eddy current speed regulator.
Technical scheme: for solving the problems of the technologies described above, the invention provides a kind of can adjustable magnetic permanent-magnet eddy current speed regulator, this can adjustable magnetic permanent-magnet eddy current speed regulator comprise that gear motor, brush, bevel gear mechanism, bearing axle, slip ring, right bearing, cam follower, p-m rotor right end cap, right-hand member ring, p-m rotor, p-m rotor left end cap, lower magnetic guiding loop, left end cap, left bearing, driving shaft, upper magnetic guiding loop, left end ring, sliver, drive end are unshakable in one's determination;
Wherein, described gear motor is installed on the shaft extension end of cam follower, the output shaft of gear motor is connected with bevel gear mechanism, brush and slip ring sliding contact also keep being electrically connected, by brush and slip ring, provide gear motor required working power, one end of bevel gear mechanism is fixedly connected with bearing axle;
Described cam follower inner side is connected with left bearing, right bearing, by left bearing, right bearing, makes relative motion between cam follower and bearing axle, cam follower outside has ellipticity surface also and lower magnetic guiding loop, upper magnetic guiding loop sliding contact, lower magnetic guiding loop, upper magnetic guiding loop periphery is annular permanent-magnet rotor, the two sides of p-m rotor are connected with the right end cap of p-m rotor and the left end cap of p-m rotor respectively, left end cap and the bearing axle of p-m rotor are rigidly connected, outside around p-m rotor is that annular drive end is unshakable in one's determination, between drive end iron core and p-m rotor, by air gap, realize magnetic Field Coupling, at drive end iron core, towards air gap, have a plurality of slotted eyes that distribute along even circumferential and be equipped with sliver in each slotted eye, the two ends of sliver are respectively by left end ring and right-hand member ring short circuit, form a cagelike structure conductor,
Described drive end iron core left side is connected with left end cap, and left end cap and driving shaft are rigidly connected; Described motor driving shaft, left end ring, right-hand member ring, left end cap, drive end iron core and sliver form the drive part of speed regulator, and gear motor, brush, bevel gear mechanism, bearing axle, slip ring, right bearing, cam follower, p-m rotor right end cap, p-m rotor, p-m rotor left end cap, lower magnetic guiding loop, left bearing, upper magnetic guiding loop form secondary part.
Preferably, upper magnetic guiding loop and lower magnetic guiding loop are restricted to radially and move up and down, and upper magnetic guiding loop and lower magnetic guiding loop two ends are integral by spring assembly.
Beneficial effect: the present invention adjusts the gap between p-m rotor inner side and upper lower magnetic guiding loop by cam follower, thus the ability that changes p-m rotor excitation changes the size of air-gap field, realize coupling torque and speed adjusting object.
Owing to having adopted oval cam rotor, regulate the required vertical force in gap to change the required moment of torsion of rotation internal rotor into, greatly reduce actuating force, adopt and be fixed on gear motor and the bevel gear governor motion on cam follower in addition, improved flexibility and the stability of real-time speed regulating, there is compact conformation, be applicable to severe duty drive.Meanwhile, magnetism-regulating structure of the present invention has avoided p-m rotor existence to be exposed to the part outside air gap, has solved preferably the problem of air gap suction impurity.
Accompanying drawing explanation
Fig. 1 is the profile of permanent-magnet eddy current speed regulator of the present invention
Fig. 2 is the vertical view of p-m rotor
Fig. 3 is the vertical view of cam follower and magnetic guiding loop assembly
Fig. 4 is the schematic diagram of minimum load state
Fig. 5 is the schematic diagram of maximum output state
Fig. 6 is bevel gear speed regulator scheme of installation
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1: described permanent-magnet eddy current speed regulator that can adjustable magnetic adopts cam follower to promote upper lower magnetic guiding loop to regulate air-gap field intensity, comprise gear motor 1, brush 2, bevel gear speed regulator 3, bearing axle 4, slip ring 5, right bearing 6, cam follower 7, p-m rotor right end cap 8, right-hand member ring 9, p-m rotor 10, p-m rotor left end cap 11, lower ring 12 unshakable in one's determination, left end cap 13, left bearing 14, driving shaft 15, upper iron core ring 16, left end ring 17, sliver 18, drive end iron core 19.
Described gear motor 1 is installed on the shaft extension end of cam follower 7, the output shaft of gear motor is connected with bevel gear mechanism 3, brush 2 is electrically connected with slip ring 5 sliding contacts maintenance, by brush and slip ring, provide gear motor 1 required working power, one end of bevel gear mechanism 3 is fixedly connected with bearing axle 4, described cam follower 7 inner sides and left bearing 13, right bearing 6 connects, by can be movable relatively between bearing cam follower 7 and bearing axle 4, cam follower 7 outsides have ellipticity surface and with lower magnetic guiding loop 12, upper magnetic guiding loop 16 sliding contacts, on, lower magnetic guiding loop periphery is annular permanent-magnet rotor 10, the two sides of p-m rotor 10 are connected with p-m rotor left end cap 11 with p-m rotor right end cap 8 respectively, p-m rotor left end cap 11 is rigidly connected with bearing axle 4, there is annular drive end iron core 19 in the outside of p-m rotor 10, between drive end unshakable in one's determination 19 and p-m rotor 10, by air gap, be coupled, at drive end iron core 19, towards air gap, have a plurality of slotted eyes that distribute along even circumferential and in each slotted eye, be equipped with sliver 18, the two ends of sliver 18 are respectively by left end ring 17 and right-hand member ring 9 short circuits, form a cagelike structure conductor.Described drive end 19 left sides unshakable in one's determination are connected with left end cap 13, and left end cap 13 is rigidly connected with driving shaft 15.Described p-m rotor 10, motor driving shaft 15, left end ring 17, right-hand member ring 9, drive end unshakable in one's determination 19 and sliver 18 form the drive part of speed regulator, and gear motor 1, brush 2, bevel gear mechanism 3, bearing axle 4, slip ring 5, right bearing 6, cam follower 7, p-m rotor right end cap 8, p-m rotor 10, p-m rotor left end cap 11, lower magnetic guiding loop 12, left bearing 14, upper magnetic guiding loop 16 form secondary part.
As shown in Figure 2: p-m rotor 10 adopts the structure that permanent magnet 20 is alternate with iron core 21.
As shown in Figure 3: cam follower outer surface is oval, and oval-shaped internal rotor radius is different, for variable field control under different situations provides possibility, the ratio of ellipse long and short shaft is larger, and adjustable magnetic scope is larger.Upper magnetic guiding loop 16 and lower magnetic guiding loop 12 are restricted to radially and move up and down, and upper and lower magnetic guiding loop two ends are combined into one by spring 22.
By Fig. 4,5 known speed control principles of the present invention: because oval radius is different, at cam follower major axis place, support magnetic guiding loop (as Fig. 4), when the reaction force that overcomes spring tension is provided, magnetic guiding loop and permanent magnet are nearest, inside permanent magnet, magnetic resistance is minimum, now most of permanent magnetic field is by magnetic guiding loop short circuit, and the magnetic field intensity that p-m rotor is set up at air gap is minimum, and the moment that permanent-magnet eddy current speed regulator transmits is minimum; When cam follower minor axis place supports magnetic guiding loop (as Fig. 5), between permanent magnet and magnetic guiding loop, gap is large, magnetic resistance is large, and the magnetic field that p-m rotor is set up at air gap is the strongest, and the moment that permanent-magnet eddy current speed regulator transmits is maximum.The position of adjustable magnetic ring, between Fig. 4 and two extreme positions of Fig. 5, can be adjusted in real time according to operating mode under normal circumstances, realizes the real-time adjusting to power output and output speed.
As seen from Figure 6, gear motor is fixed on cam follower outrigger shaft, gear motor output shaft is connected with bevel gear head, bevel gear seat is fixed on bearing axle, bevel gear head is connected by mechanical engagement with bevel gear seat, when gear motor rotates, drive rotating shaft bevel gear head to rotate, make the position of the relative bearing axle of cam follower, magnetic guiding loop, p-m rotor left end cap etc. that relative changes occur.
Thereby ellipticity cam follower 7 is used for regulating air-gap field to realize speed and regulates, adjustable magnetic principle is as follows: transverse and minor axis two limit that corresponding speed regulates respectively, when cam follower long axis ray is during perpendicular to the direction of motion with upper lower magnetic guiding loop, gap between magnetic guiding loop and p-m rotor is maximum, air-gap field between p-m rotor and drive end iron core is the strongest, the coupling moment of torsion of permanent-magnet eddy current speed regulator is maximum, now runs on fast state; When cam follower minor axis axis is during perpendicular to the direction of motion with upper lower magnetic guiding loop, gap between magnetic guiding loop and p-m rotor is minimum, and the permanent magnet excitation of p-m rotor is weakened, and air-gap field is the most weak, the moment of torsion that permanent-magnet eddy current speed regulator provides is minimum, now runs on lower-speed state.
Driving shaft 15 can exchange with bearing axle 4, realizes the two-way flow of energy
The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection scope of the present invention.
Claims (3)
- One kind can adjustable magnetic permanent-magnet eddy current speed regulator, it is characterized in that: this can comprise gear motor (1) by adjustable magnetic permanent-magnet eddy current speed regulator, brush (2), bevel gear mechanism (3), bearing axle (4), slip ring (5), right bearing (6), cam follower (7), p-m rotor right end cap (8), right-hand member ring (9), p-m rotor (10), p-m rotor left end cap (11), lower magnetic guiding loop (12), left end cap (13), left bearing (14), driving shaft (15), upper magnetic guiding loop (16), left end ring (17), sliver (18), drive end (19) unshakable in one's determination,Wherein, described gear motor (1) is installed on the shaft extension end of cam follower (7), the output shaft of gear motor (1) is connected with bevel gear mechanism (3), brush (2) is electrically connected with slip ring (5) sliding contact maintenance, by brush (2) and slip ring (5), provide gear motor (1) required working power, one end of bevel gear mechanism (3) is fixedly connected with bearing axle (4);Described cam follower (7) inner side is connected with left bearing (13), right bearing (6), by left bearing (13), right bearing (6), makes relative motion between cam follower (7) and bearing axle (4), cam follower (7) outside have ellipticity surface and with lower magnetic guiding loop (12), upper magnetic guiding loop (16) sliding contact, lower magnetic guiding loop (12), upper magnetic guiding loop (16) periphery is annular permanent-magnet rotor (10), the two sides of p-m rotor (10) are connected with the right end cap (8) of p-m rotor (10) and the left end cap (11) of p-m rotor (10) respectively, (10) left end cap (11) of p-m rotor is rigidly connected with bearing axle (4), outside around p-m rotor (10) is annular drive end (19) unshakable in one's determination, between drive end (19) unshakable in one's determination and p-m rotor (10), by air gap, realize magnetic Field Coupling, at drive end (19) unshakable in one's determination, towards air gap, have a plurality of slotted eyes that distribute along even circumferential and in each slotted eye, be equipped with sliver (18), the two ends of sliver (18) are respectively by left end ring (17) and right-hand member ring (9) short circuit, form a cagelike structure conductor,Described drive end (19) unshakable in one's determination left side is connected with left end cap (13), and left end cap (13) is rigidly connected with driving shaft (15); Described motor driving shaft (15), left end ring (17), right-hand member ring (9), left end cap (13), drive end (19) unshakable in one's determination and sliver (18) form the drive part of speed regulator, and gear motor (1), brush (2), bevel gear mechanism (3), bearing axle (4), slip ring (5), right bearing (6), cam follower (7), p-m rotor right end cap (8), p-m rotor (10), p-m rotor left end cap (11), lower magnetic guiding loop (12), left bearing (14), upper magnetic guiding loop (16) form secondary part.
- 2. according to claim 1 can adjustable magnetic permanent-magnet eddy current speed regulator, it is characterized in that: upper magnetic guiding loop (16) and lower magnetic guiding loop (12) are restricted to radially and move up and down, and upper magnetic guiding loop (16) and lower magnetic guiding loop (12) two ends are combined into one by spring (22).
- 3. according to claim 1 and 2 can adjustable magnetic permanent-magnet eddy current speed regulator, it is characterized in that: ellipticity cam follower (7) thus being used for regulating air-gap field to realize speed regulates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310511194.7A CN103532340B (en) | 2013-10-25 | 2013-10-25 | A kind of Magnetism-adjustablepermanent permanent magnet eddy current governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310511194.7A CN103532340B (en) | 2013-10-25 | 2013-10-25 | A kind of Magnetism-adjustablepermanent permanent magnet eddy current governor |
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| CN103532340A true CN103532340A (en) | 2014-01-22 |
| CN103532340B CN103532340B (en) | 2016-04-13 |
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| CN201310511194.7A Expired - Fee Related CN103532340B (en) | 2013-10-25 | 2013-10-25 | A kind of Magnetism-adjustablepermanent permanent magnet eddy current governor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171521A (en) * | 2017-06-22 | 2017-09-15 | 广东威灵电机制造有限公司 | Induction electric machine rotor has its induction conductivity |
| CN107425696A (en) * | 2017-08-11 | 2017-12-01 | 天津吉玄节能技术股份有限公司 | One kind moves radially magnetic screen formula permanent-magnet speed governor |
| CN109889019A (en) * | 2019-04-04 | 2019-06-14 | 四川大学 | A kind of novel adjustable speed drum type brake permanent magnet eddy current coupling |
| WO2020118995A1 (en) * | 2018-12-11 | 2020-06-18 | 开天传动技术(上海)有限公司 | Permanent magnet coupling having adjustable dual clutch mechanism |
| CN114337186A (en) * | 2021-12-20 | 2022-04-12 | 迈格钠磁动力股份有限公司 | Permanent magnet eddy current speed regulation device |
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| US5675203A (en) * | 1994-03-15 | 1997-10-07 | Volkswagen Ag | Motor/generator arrangement having a movable common stator |
| CN101145726A (en) * | 2007-10-30 | 2008-03-19 | 东南大学 | Permanent magnetic vortex drive device |
| CN102664512A (en) * | 2012-05-09 | 2012-09-12 | 林贵生 | Passive permanent magnet coupling transmission, braking or load device |
| CN202713115U (en) * | 2012-05-09 | 2013-01-30 | 林贵生 | Passive permanent magnet coupling transmission, braking or load device |
| CN203617876U (en) * | 2013-10-25 | 2014-05-28 | 东南大学 | Magnetism-adjustable permanent magnet eddy current speed regulator |
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2013
- 2013-10-25 CN CN201310511194.7A patent/CN103532340B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675203A (en) * | 1994-03-15 | 1997-10-07 | Volkswagen Ag | Motor/generator arrangement having a movable common stator |
| CN101145726A (en) * | 2007-10-30 | 2008-03-19 | 东南大学 | Permanent magnetic vortex drive device |
| CN102664512A (en) * | 2012-05-09 | 2012-09-12 | 林贵生 | Passive permanent magnet coupling transmission, braking or load device |
| CN202713115U (en) * | 2012-05-09 | 2013-01-30 | 林贵生 | Passive permanent magnet coupling transmission, braking or load device |
| CN203617876U (en) * | 2013-10-25 | 2014-05-28 | 东南大学 | Magnetism-adjustable permanent magnet eddy current speed regulator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171521A (en) * | 2017-06-22 | 2017-09-15 | 广东威灵电机制造有限公司 | Induction electric machine rotor has its induction conductivity |
| CN107425696A (en) * | 2017-08-11 | 2017-12-01 | 天津吉玄节能技术股份有限公司 | One kind moves radially magnetic screen formula permanent-magnet speed governor |
| WO2020118995A1 (en) * | 2018-12-11 | 2020-06-18 | 开天传动技术(上海)有限公司 | Permanent magnet coupling having adjustable dual clutch mechanism |
| CN109889019A (en) * | 2019-04-04 | 2019-06-14 | 四川大学 | A kind of novel adjustable speed drum type brake permanent magnet eddy current coupling |
| CN114337186A (en) * | 2021-12-20 | 2022-04-12 | 迈格钠磁动力股份有限公司 | Permanent magnet eddy current speed regulation device |
| CN114337186B (en) * | 2021-12-20 | 2023-05-02 | 迈格钠磁动力股份有限公司 | Permanent magnet eddy current speed regulating device |
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| CN103532340B (en) | 2016-04-13 |
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Granted publication date: 20160413 Termination date: 20201025 |