CN103532341B - A kind of permanent-magnet eddy current speed regulator of quick adjustable magnetic - Google Patents
A kind of permanent-magnet eddy current speed regulator of quick adjustable magnetic Download PDFInfo
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- CN103532341B CN103532341B CN201310542565.8A CN201310542565A CN103532341B CN 103532341 B CN103532341 B CN 103532341B CN 201310542565 A CN201310542565 A CN 201310542565A CN 103532341 B CN103532341 B CN 103532341B
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Abstract
The invention discloses a kind of permanent-magnet eddy current speed regulator of quick adjustable magnetic, the permanent-magnet eddy current speed regulator of this quick adjustable magnetic comprises: gear motor (1), brush (2), bevel gear mechanism (3), bearing axle (4), slip ring (5), right bearing (6), internal rotor (7), p-m rotor right end cap (8), right-hand member ring (9), adjustable magnetic ring (10), p-m rotor (11), rotor left end cap (12), left bearing (13), motor driving shaft (14), left end cap (15), left end ring (16), drive end iron core (17); Described gear motor (1) is fixed on the axle stretch end of internal rotor (7), and the output shaft of gear motor (1) is connected with bevel gear mechanism (3), and brush (2) also keeps being electrically connected with slip ring (5) sliding contact.The present invention by the size of magnetic resistance inside adjustable magnetic ring adjustment permanent magnet, thus changes the magnetic field intensity outside p-m rotor, 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, refers more particularly to a kind of permanent-magnet eddy current adjuster of quick adjustable magnetic, belongs to the technical field of permanent-magnet eddy current 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, reduces dither and noise, reduces load disturbance to the harmful effect of machine operation point, greatly improves the operational efficiency of whole system, and have long working life, there is not the advantage of harmonic pollution.And magnetic actuator can play the effect of soft start, strengthen motor bringing onto load and start ability.
The general structure of permanent magnet 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 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 permanent magnet and conductor rotor, controls, reach load speed governing object, and propose related device the size of coupling torque---air gap adjuster.But in practical application, because gas length is natively little, scope is only within several millimeters to several centimetres, and the attraction between permanent magnet and conductor rotor is very large, and not only this mechanism is difficult to realize, and the precision that adjusts of air gap 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, and unit volume is exerted oneself many, and can adjust the permanent magnetic vortex drive device 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 permanent-magnet eddy current speed regulator of quick adjustable magnetic, the permanent-magnet eddy current speed regulator of this quick adjustable magnetic comprises: gear motor, brush, bevel gear mechanism, bearing axle, slip ring, right bearing, internal rotor, p-m rotor right end cap, right-hand member ring, adjustable magnetic ring, p-m rotor, rotor left end cap, left bearing, motor driving shaft, left end cap, left end ring, drive end iron core, sliver;
Described gear motor is fixed on the axle stretch end of internal rotor, the output shaft of gear motor is connected with bevel gear mechanism, brush and slip ring sliding contact also keep being electrically connected, the working power needed for gear motor is provided by brush and slip ring, one end of bevel gear mechanism is fixedly connected with bearing axle, inside described internal rotor and left bearing, right bearing connects, pass through left bearing, right bearing makes relative motion between internal rotor and bearing axle, be rigidly connected with adjustable magnetic ring outside internal rotor, outside around adjustable magnetic ring is annular permanent-magnet rotor, the two sides of p-m rotor are connected with p-m rotor right end cap and p-m rotor left end cap respectively, p-m rotor left end cap and bearing axle 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 groove towards air gap and be equipped with sliver in each groove 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 cap, left end ring, right-hand member ring, drive end iron core and sliver form the drive part of speed regulator.
Preferably, p-m rotor adopts the structure that permanent magnet is alternate with iron core, and the magnetizing direction of wherein adjacent permanent magnet is contrary each other, and the polarity forming N-S-S-N is relative between two; Described adjustable magnetic ring is made up of non-magnetizer and magnetic conductor successively alternate form.
Preferably, internal rotor and adjustable magnetic collar rotate around bearing axle, change the relative position of adjustable magnetic ring and p-m rotor, thus quick adjustment air-gap field, realize the adjustment of load speed.
Beneficial effect: the present invention by the size of magnetic resistance inside adjustable magnetic ring adjustment permanent magnet, thus changes the magnetic field intensity outside p-m rotor, realizes the object of coupling torque and speed adjustment.
Owing to adopting this structure of adjustable magnetic ring, the vertical force needed for air gap is regulated to change the moment of torsion rotated needed for adjustable magnetic ring into, greatly reduce actuating force, and owing to adopting the gear motor and bevel gear governor motion that are fixed on internal rotor, improve flexibility and the stability of real-time speed regulating, there is compact conformation, be applicable to the advantage of high-power applications and fast response time.In addition, this speed regulator air gap remains constant, adopts the mode rotating adjustable magnetic ring to realize quick adjustment.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 adjustable magnetic ring
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, internal rotor 7, p-m rotor right end cap 8, right-hand member ring 9, adjustable magnetic ring 10, p-m rotor 11, rotor left end cap 12, left bearing 13, motor driving shaft 14, left end cap 15, left end ring 16, drive end iron core 17, sliver 18, permanent magnet 19, iron core 20, magnetic conductor 21, non-magnetizer 22.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the permanent-magnet eddy current speed regulator of described quick adjustable magnetic adopts adjustable magnetic ring to regulate air-gap field intensity, comprises gear motor 1, brush 2, bevel gear mechanism 3, bearing axle 4, slip ring 5, right bearing 6, internal rotor 7, p-m rotor right end cap 8, right-hand member ring 9, adjustable magnetic ring 10, p-m rotor 11, rotor left end cap 12, left bearing 13, motor driving shaft 14, left end cap 15, left end ring 16, drive end iron core 17, sliver 18, permanent magnet 19, iron core 20, magnetic conductor 21, non-magnetizer 22.
Described gear motor 1 is fixed on the axle stretch end of internal rotor 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 internal rotor 7, right bearing 6 connects, by can be movable relatively between bearing internal rotor 7 and bearing axle 4, be rigidly connected with adjustable magnetic ring 10 outside internal rotor 7, outside around adjustable magnetic ring is annular permanent-magnet rotor 11, the two sides of p-m rotor 11 are connected with p-m rotor right end cap 8 and p-m rotor left end cap 12 respectively, p-m rotor left end cap 12 and bearing axle 4 are rigidly connected, outside around p-m rotor 11 is annular drive end iron core 17, magnetic Field Coupling is realized by air gap between drive end unshakable in one's determination 17 and p-m rotor 11, have multiple circumferentially equally distributed groove at drive end iron core 17 towards air gap and be equipped with sliver 18 in each groove, the two ends of sliver 18 are respectively by left end ring 16 and right-hand member ring 9 short circuit, form a cagelike structure conductor.Be connected with left end cap 15 on the left of described drive end iron core 17, left end cap 15 and driving shaft 14 are rigidly connected.Described motor driving shaft 14, left end cap 15, left end ring 16, right-hand member ring 9, drive end unshakable in one's determination 17 and sliver 18 form the drive part of speed regulator.
As seen from Figure 2, p-m rotor 11 adopts permanent magnet 19 and 20 alternate structures unshakable in one's determination.The magnetizing direction of wherein adjacent permanent magnet 19 is contrary each other, and the polarity forming N-S-S-N is relative between two; Described adjustable magnetic ring 10 is made up of non-magnetizer 22 and magnetic conductor 21 successively alternate form.
Internal rotor 7 and adjustable magnetic ring 10 rotate around bearing axle 4, change the relative position of adjustable magnetic ring 10 and p-m rotor 11, thus quick adjustment air-gap field, realize the adjustment of load speed.
As seen from Figure 3, adjustable magnetic ring 10 is formed by non-magnetizer 22 is alternate successively with magnetic conductor 21.
By Fig. 4,5 known Excitation principle of the present invention, when the non-magnetizer of adjustable magnetic ring and permanent magnet just pair time (as Fig. 4), inside permanent magnet, magnetic resistance is maximum, and outside p-m rotor, gap density is maximum, and coupling torque is the highest; When the magnetic conductor of adjustable magnetic ring and permanent magnet just pair time (as Fig. 5), inside permanent magnet, magnetic resistance is minimum, and the excitation ability of p-m rotor is seriously impaired, and now outside p-m rotor, the magnetic flux density of air gap is minimum, and the torque of transmission is minimum.Adjustment adjustable magnetic ring makes it be between above-mentioned two positions, realizes the adjustment of load speed.
As seen from Figure 6, gear motor is fixed on internal rotor 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 adjustable magnetic ring relative load axle, magnetic guiding loop, p-m rotor left end cap etc. that relative changes occur.
Adjustable magnetic ring 10 can be used to quick adjustment air-gap field, and speed control principle is as follows: when the non-magnetizer of adjustable magnetic ring and permanent magnet just pair time, inside permanent magnet, magnetic resistance is maximum, and outside p-m rotor, gap density is maximum, and coupling torque is the highest; When the magnetic conductor of adjustable magnetic ring and permanent magnet just pair time, inside permanent magnet, magnetic resistance is minimum, and the excitation ability of p-m rotor is seriously impaired, and now outside p-m rotor, the magnetic flux density of air gap is minimum, and the torque of transmission is minimum.Adjustment adjustable magnetic ring makes it be between above-mentioned two positions, realizes the adjustment of load speed.
Driving shaft and bearing axle 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. the permanent-magnet eddy current speed regulator of a quick adjustable magnetic, it is characterized in that, the permanent-magnet eddy current speed regulator of this quick adjustable magnetic comprises: gear motor (1), brush (2), bevel gear mechanism (3), bearing axle (4), slip ring (5), right bearing (6), internal rotor (7), p-m rotor right end cap (8), right-hand member ring (9), adjustable magnetic ring (10), p-m rotor (11), rotor left end cap (12), left bearing (13), motor driving shaft (14), left end cap (15), left end ring (16), drive end iron core (17), sliver (18),
Described gear motor (1) is fixed on the axle stretch end of internal rotor (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, 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), described internal rotor (7) inner side and left bearing (13), right bearing (6) connects, by left bearing (13), right bearing (6) makes relative motion between internal rotor (7) and bearing axle (4), internal rotor (7) outside is rigidly connected with adjustable magnetic ring (10), outside around adjustable magnetic ring is annular permanent-magnet rotor (11), the two sides of p-m rotor (11) are connected with p-m rotor right end cap (8) and p-m rotor left end cap (12) respectively, p-m rotor left end cap (12) and bearing axle (4) are rigidly connected, outside around p-m rotor (11) is annular drive end iron core (17), magnetic Field Coupling is realized by air gap between drive end iron core (17) and p-m rotor (11), have multiple circumferentially equally distributed groove at drive end iron core (17) towards air gap and in each groove, be equipped with sliver (18), the two ends of sliver (18) are respectively by left end ring (16) and right-hand member ring (9) short circuit, form a cagelike structure conductor,
Described drive end iron core (17) left side is connected with left end cap (15), and left end cap (15) and driving shaft (14) are rigidly connected; Described motor driving shaft (14), left end cap (15), left end ring (16), right-hand member ring (9), drive end iron core (17) and sliver (18) form the drive part of speed regulator.
2. the permanent-magnet eddy current speed regulator of quick adjustable magnetic according to claim 1, it is characterized in that, the structure that p-m rotor (11) adopts permanent magnet (19) alternate with (20) unshakable in one's determination, the magnetizing direction of wherein adjacent permanent magnet (19) is contrary each other, and the polarity forming N-S-S-N is relative between two; Described adjustable magnetic ring (10) is made up of non-magnetizer (22) and magnetic conductor (21) successively alternate form.
3. the permanent-magnet eddy current speed regulator of quick adjustable magnetic according to claim 1 and 2, it is characterized in that, internal rotor (7) and adjustable magnetic ring (10) rotate around bearing axle (4), change the relative position of adjustable magnetic ring (10) and p-m rotor (11), thus quick adjustment air-gap field, realize the adjustment of load speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310542565.8A CN103532341B (en) | 2013-10-25 | 2013-10-25 | A kind of permanent-magnet eddy current speed regulator of quick adjustable magnetic |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310542565.8A CN103532341B (en) | 2013-10-25 | 2013-10-25 | A kind of permanent-magnet eddy current speed regulator of quick adjustable magnetic |
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| CN103532341A CN103532341A (en) | 2014-01-22 |
| CN103532341B true CN103532341B (en) | 2015-11-18 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204103738U (en) * | 2014-09-25 | 2015-01-14 | 刁俊起 | A kind of permanent-magnet speed governor of fixing magnetic gap |
| CN105896911A (en) * | 2015-01-15 | 2016-08-24 | 李启飞 | 517 type ball screw electric speed regulation disc type magnetic coupling |
| CN104852550B (en) * | 2015-04-14 | 2017-11-14 | 苏州威莫磁力传动技术有限公司 | A kind of pawl pole magneticfocusing permanent-magnet speed governor |
| CN109831087B (en) * | 2019-04-15 | 2023-08-08 | 金陵科技学院 | Novel compound permanent magnet eddy current speed regulator |
| CN110542568A (en) * | 2019-09-20 | 2019-12-06 | 西南交通大学 | Rail eddy current braking performance testing device and testing method thereof |
| CN112870459A (en) * | 2021-01-19 | 2021-06-01 | 温州医科大学附属第一医院 | Portable drainage bag |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201781402U (en) * | 2010-08-17 | 2011-03-30 | 陈传松 | Energy-saving speed-regulating permanent-magnet driver |
| CN203537213U (en) * | 2013-10-25 | 2014-04-09 | 东南大学 | Permanent magnetic eddy speed regulator capable of achieving fast magnetism regulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101997392B (en) * | 2009-08-11 | 2013-01-16 | 余亚莉 | High-efficiency boiler-grate permanent-magnet coupling capable of adjusting electromagnetic torque |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201781402U (en) * | 2010-08-17 | 2011-03-30 | 陈传松 | Energy-saving speed-regulating permanent-magnet driver |
| CN203537213U (en) * | 2013-10-25 | 2014-04-09 | 东南大学 | Permanent magnetic eddy speed regulator capable of achieving fast magnetism regulation |
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Granted publication date: 20151118 Termination date: 20201025 |