CN103532340B - A kind of Magnetism-adjustablepermanent permanent magnet eddy current governor - Google Patents
A kind of Magnetism-adjustablepermanent permanent magnet eddy current governor Download PDFInfo
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- CN103532340B CN103532340B CN201310511194.7A CN201310511194A CN103532340B CN 103532340 B CN103532340 B CN 103532340B CN 201310511194 A CN201310511194 A CN 201310511194A CN 103532340 B CN103532340 B CN 103532340B
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Abstract
The invention discloses a kind of Magnetism-adjustablepermanent permanent magnet eddy current governor, this Magnetism-adjustablepermanent permanent magnet eddy current governor comprises 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), 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 iron core (19); Wherein, described gear motor (1) is installed on the axle stretch end of cam follower (7).The present invention, by the gap inside cam follower adjustment p-m rotor and between upper lower magnetic guiding loop, changes the ability of p-m rotor excitation thus the size of change air-gap field, realizes the object of coupling torque and speed adjustment.
Description
Technical field:
What the present invention relates to is a kind of permanent-magnet eddy current speed regulating device, refer more particularly to a kind of can the permanent-magnet eddy current speed regulator of adjustable magnetic, belong to the technical field of vortex transmission.
Background technology:
Common mechanical transmission is mainly through modes such as chain drive, frictional drive, hydraulic drive, gear drive and belt-type transmissions, and load be directly connected on line shaft through plant equipment, machine driving also exists the problem 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 have nothing to do, 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.In order to avoid this problem, user is increasing capacity motor as much as possible to during choice of electrical machine, and this had both added a cost and has dropped into, and caused again motor low load with strong power phenomenon, reduces efficiency and the loss that increases electric power, waste mass energy.
Permanent magnetic vortex drive device can isolate motor and driven shaft, reduce dither and noise, by permanent-magnet eddy current speed governing, reduce the harmful effect of load disturbance to machine operation point, greatly improve the operational efficiency of whole system, and there is long working life, there is not 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: arrange with Surface Mount or embedded mode inside internal rotor or outside external rotor and be called p-m rotor by the permanent magnet that magnetic pole is alternate; Correspondingly, relative with permanent magnet is conductor rotor.P-m rotor and conductor rotor placed coaxial, 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 there is relative motion between p-m rotor and conductor rotor, according to the law of electromagnetic induction, sliver in magnetic force line cutting conductor rotor, sliver produces dynamic raw electromotive force, eddy current is produced, the Induced magnetic field of electric current generation simultaneously and permanent magnet magnetic field interactions, traction permanent magnetic rotor motion under dynamic raw potential stimulus.By the two-way flow of energy, permanent magnet rotor also can as driving shaft, and conductor rotor is as driven shaft, and mode of speed regulation is identical.
Patent ZL200710134483.4 proposes to regulate air-gap field intensity by the gas length between adjustment p-m rotor and conductor rotor, controls, reaches the object of load speed governing, and propose corresponding device to the size of coupling torque---air gap adjuster.But in practical application, because gas length is natively 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 be difficult to realize, and air gap adjustment precision and smoothness can not be guaranteed.Can also adopt in addition adjustment p-m rotor and conductor rotor between length of action to regulate coupling torque size, thus 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 magnetic dust, machine tool etc. in the metal fragment of surrounding, air, these foreign material attracted to p-m rotor surface and even enter in working gas gap, will have a strong impact on the normal work of speed regulator.
The present invention adopts and neither changes the way that working gas gap length does not change p-m rotor area of contact yet, by the ingehious design to permanent-magnet eddy current speed regulator, adjusts flexibly air-gap field intensity, reaches axle carry-over moment and speed stepless changing object.
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, Driving Torque adjustable range is large, unit volume is exerted oneself many, and can adjust the Magnetism-adjustablepermanent permanent magnet eddy current governor of operating mode (comprising torque rotary speed and power output) in real time.
Technical scheme: for solving the problems of the technologies described above, the invention provides a kind of Magnetism-adjustablepermanent permanent magnet eddy current governor, this Magnetism-adjustablepermanent permanent magnet eddy current governor comprises 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 iron core;
Wherein, described gear motor is installed on the axle stretch 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, provide the working power needed for gear motor by brush and slip ring, one end of bevel gear mechanism is fixedly connected with bearing axle;
Be connected with left bearing, right bearing inside described cam follower, make relative motion between cam follower and bearing axle by left bearing, right bearing, have outside cam follower ellipticity surface and 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, magnetic Field Coupling is realized by air gap between drive end iron core and p-m rotor, have multiple circumferentially equally distributed slotted eye towards air gap and be equipped with sliver in each slotted eye drive end is unshakable in one's determination, the two ends of sliver are respectively by left end ring and right-hand member ring short circuit, form a cagelike structure conductor,
Be connected with left end cap on the left of described drive end iron core, 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, 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 composition secondary part.
Preferably, upper magnetic guiding loop and lower magnetic guiding loop are restricted to and radially move up and down, and it is integral that spring assembly is passed through at upper magnetic guiding loop and lower magnetic guiding loop two ends.
Beneficial effect: the present invention, by inside cam follower adjustment p-m rotor and gap between upper lower magnetic guiding loop, changes the ability of p-m rotor excitation thus changes the size of air-gap field, realize that coupling torque and speed regulates object.
Owing to have employed oval cam rotor, the vertical force needed for gap is regulated to change the moment of torsion rotated needed for internal rotor into, very big minimizing actuating force, adopt the gear motor be fixed on cam follower and bevel gear governor motion in addition, improve flexibility and the stability of real-time speed regulating, there is compact conformation, be applicable to the advantage of severe duty drive.Meanwhile, magnetism-regulating structure of the present invention avoids p-m rotor and there is the part be exposed to outside air gap, solves the problem that air gap sucks impurity preferably.
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
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, 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 iron core 19, permanent magnet 20, iron core 21, spring 22, gear motor output shaft 23, bevel gear head 24, bevel gear seat 25.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1: describedly can the permanent-magnet eddy current speed regulator of adjustable magnetic to adopt cam follower to promote upper lower magnetic guiding loop to regulate air-gap field intensity, comprise 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, 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 iron core 19.
Described gear motor 1 is installed on the axle stretch end of cam follower 7, the output shaft of gear motor is connected with bevel gear mechanism 3, brush 2 also keeps being electrically connected with slip ring 5 sliding contact, the working power needed for gear motor 1 is provided by brush and slip ring, one end of bevel gear mechanism 3 is fixedly connected with bearing axle 4, with left bearing 13 inside described cam follower 7, right bearing 6 connects, by can be movable relatively between bearing cam rotor 7 and bearing axle 4, have outside cam follower 7 ellipticity surface and with lower magnetic guiding loop 12, the sliding contact of upper magnetic guiding loop 16, 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 right end cap 8 and p-m rotor left end cap 11 respectively, p-m rotor left end cap 11 and bearing axle 4 are rigidly connected, there is annular drive end iron core 19 in the outside of p-m rotor 10, be coupled by air gap between drive end unshakable in one's determination 19 and p-m rotor 10, have multiple circumferentially equally distributed slotted eye at drive end iron core 19 towards air gap and be equipped with sliver 18 in each slotted eye, 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.Be connected with left end cap 13 on the left of described drive end iron core 19, left end cap 13 and driving shaft 15 are rigidly connected.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: the structure that p-m rotor 10 adopts permanent magnet 20 alternate with iron core 21.
As shown in Figure 3: cam follower outer surface is oval, and oval internal rotor radius is different, and under different situations, variable field control 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 and radially 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 ellipse radii is different, magnetic guiding loop (as Fig. 4) is supported at cam follower major axis place, when the reaction force overcoming spring tension is provided, magnetic guiding loop and permanent magnet 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 large, and p-m rotor is the strongest in the magnetic field that air gap is set up, and the moment that permanent-magnet eddy current speed regulator transmits is maximum.The position of adjustable magnetic ring is between Fig. 4 and Fig. 5 two extreme positions under normal circumstances, can adjust in real time according to operating mode, realizes the real-time adjustment 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, drive rotating shaft when gear motor rotates and the rotation of bevel gear head, make the position of cam follower relative load axle, magnetic guiding loop, p-m rotor left end cap etc. that relative changes occur.
Ellipticity cam follower 7 is used for regulating air-gap field thus the speed that realizes regulates, Excitation principle is as follows: two limit that transverse and minor axis difference corresponding speed regulate, when cam follower long axis ray is 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 is 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 and bearing axle 4 can exchange, and realize 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 to some technical characteristics wherein to replace and distortion, these are replaced and are out of shape all in protection scope of the present invention.
Claims (3)
1. a Magnetism-adjustablepermanent permanent magnet eddy current governor, it is characterized in that: this Magnetism-adjustablepermanent permanent magnet eddy current governor comprises 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), 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 iron core (19),
Wherein, described gear motor (1) is installed on the axle stretch end of cam follower (7), the output shaft of gear motor (1) is connected with bevel gear mechanism (3), brush (2) also keeps being electrically connected with slip ring (5) sliding contact, provide the working power needed for gear motor (1) by brush (2) and slip ring (5), 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 (14), right bearing (6), makes relative motion between cam follower (7) and bearing axle (4) by left bearing (14), right bearing (6), 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 p-m rotor right end cap (8) of p-m rotor (10) and the p-m rotor left end cap (11) of p-m rotor (10) respectively, p-m rotor left end cap (11) and the bearing axle (4) of p-m rotor (10) are rigidly connected, outside around p-m rotor (10) is annular drive end iron core (19), magnetic Field Coupling is realized by air gap between drive end iron core (19) and p-m rotor (10), have multiple circumferentially equally distributed slotted eye at drive end iron core (19) towards air gap 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 iron core (19) left side is connected with left end cap (13), and left end cap (13) and driving shaft (15) are rigidly connected, described motor driving shaft (15), left end ring (17), right-hand member ring (9), left end cap (13), drive end iron core (19) and sliver (18) form the drive part of speed regulator, 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) composition secondary part.
2. Magnetism-adjustablepermanent permanent magnet eddy current governor according to claim 1, it is characterized in that: upper magnetic guiding loop (16) and lower magnetic guiding loop (12) are restricted to and radially move up and down, upper magnetic guiding loop (16) and lower magnetic guiding loop (12) two ends are combined into one by spring (22).
3. Magnetism-adjustablepermanent permanent magnet eddy current governor according to claim 1 and 2, is characterized in that: ellipticity cam follower (7) is used for regulating air-gap field thus the speed that realizes regulates.
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| 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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| 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 CN103532340A (en) | 2014-01-22 |
| CN103532340B true 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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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN109302044B (en) * | 2018-12-11 | 2023-12-22 | 开天传动技术(上海)有限公司 | Permanent magnet coupler with adjustable double-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 |
| 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 |
Citations (5)
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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 |
-
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 |
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