CN204597763U - A kind of permanent magnetism asynchronous speed-adjustable device - Google Patents
A kind of permanent magnetism asynchronous speed-adjustable device Download PDFInfo
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- CN204597763U CN204597763U CN201520343777.8U CN201520343777U CN204597763U CN 204597763 U CN204597763 U CN 204597763U CN 201520343777 U CN201520343777 U CN 201520343777U CN 204597763 U CN204597763 U CN 204597763U
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- internal rotor
- permanent magnet
- rotor assembly
- permanent
- speed regulating
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Abstract
The utility model discloses a kind of permanent magnetism asynchronous speed-adjustable device, comprise permanent-magnetic outer rotor assembly, internal rotor assembly, mechanical adjustable speed drive and power output shaft; The uniform air gap of one deck is had between described permanent-magnetic outer rotor assembly and internal rotor assembly; Described mechanical adjustable speed drive is linear motion platform, and the permanent magnet in the relative external rotor assembly of internal rotor can be made to axially move, and carries out speed governing, or make the permanent magnet in internal rotor and external rotor assembly be in complete couple state by changing axial magnetic flux area.Centrifugal blades of the present utility model and deep bead and power input shaft and permanent magnet sleeve rotate jointly, form air circulation and cross axial ventilation hole on internal rotor and power output shaft, taken away by heat; Internal rotor material of the present utility model is carbon steel, and surface configuration has three kinds of forms, has the little and advantage such as little of generating heat of induced current.The utility model, compared with disc type and the telescopic permanent magnet speed regulation device of cage modle, has the easily advantage such as processing and low cost of manufacture.
Description
Technical field
The utility model relates to a kind of permanent magnet speed regulation device, particularly a kind of permanent magnetism asynchronous speed-adjustable device.
Background technology
Current permanent magnet speed regulation device is generally disc type, telescopic and based on asychronous dynamo cage cage modle is telescopic.Disc type and telescopic operation principle be utilize permanent magnetism body disc (or cover) and conductor disc (or overlapping) relatively rotate generation eddy current, and the induced field utilizing this eddy current to produce and permanent magnetic field are used for transferring power mutually.The material manufacturing conductor disc (or cover) is good conductor (as aluminium, copper etc.), will produce comparatively maelstrom during work, and cause permanent magnet speed regulation device heat waste large, efficiency is low.
Cage-type rotor permanent magnetism asynchronous speed-adjustable device based on asychronous dynamo cage is identical with asynchronous machine operation principle, and its feature is as follows: 1. the alterable scope of revolutional slip is very little, and speed adjustable range is very limited, even if overload 50%, the reduction of its rotating speed is also no more than 3%; 2. starting current multiple large (being generally about 4 ~ 7 times of rated current); 3. detent torque multiple little (being generally about 1 ~ 2 times of nominal torque); 4. time by changing magnetic flux speed governing, rotor current alters a great deal, and maximum current can be more than 3 ~ 7 times of rated current, and therefore heating is large, efficiency is low.
Summary of the invention
For solving the problems referred to above that prior art exists, the utility model object to provide a kind of permanent magnetism asynchronous speed-adjustable device generating heat little, efficiency is high and speed adjustable range is large.
For achieving the above object, the utility model adopts following technical scheme:
A kind of permanent magnetism asynchronous speed-adjustable device, comprises permanent-magnetic outer rotor assembly, internal rotor assembly, mechanical adjustable speed drive and power output shaft;
Described permanent-magnetic outer rotor assembly comprises power input shaft, centrifugal blades, deep bead and permanent magnet sleeve, and described power input shaft one end is directly connected by key and prime mover power output shaft, the other end is connected by claw type structure or hinged bolts and permanent magnet sleeve; Permanent magnet in permanent magnet sleeve is tile-type structure, and the arc-shaped surface of permanent magnet is inside, and the endoporus that each arc-shaped surface is formed is cylindrical or conical; Permanent magnet in described permanent magnet sleeve is circumferentially uniformly distributed and magnetic pole is radially staggered; Described centrifugal blades and deep bead in axial direction close contact, and jointly rotate with power input shaft and permanent magnet sleeve;
Described internal rotor assembly comprises internal rotor and end ring; Described internal rotor is made up of ferromagnetic material, and the profile of internal rotor is consistent with the internal via shape that permanent magnet arc-shaped surface is formed, and is namely all cylindrical or conical; The endoporus of internal rotor is splined hole, and jointly forms spline moving sets with the spline on power output shaft; Have ventilation hole vertically between internal rotor contoured surface and spline endoporus, and jointly form heat dissipation channel with the centrifugal blades on permanent-magnetic outer rotor assembly; In internal rotor assembly, the quantity of end ring is two, makes by good conductor material, and is arranged on the both sides of internal rotor;
Described internal rotor contoured surface is one of following three kinds of shapes:
Contoured surface is smooth surface;
Contoured surface opens multiple straight trough vertically, the straight trough opened and internal rotor centerline parallel or angled;
Contoured surface drives multiple cannelure vertically;
The uniform air gap of one deck is had between described permanent-magnetic outer rotor assembly and internal rotor assembly; And the endoporus that in permanent magnet sleeve, permanent magnet arc-shaped surface is formed and internal rotor profile support the use;
Described mechanical adjustable speed drive is linear motion platform, comprise the speed regulating bearing seat be arranged on power output shaft, flat guide, self-lubricating composite bearing, leading screw, screw, end bearing block and speed regulating device rear end bearing seat before the speed regulating device of gearmotor and two end supports leading screw, in described speed regulating bearing seat, speed regulating bearing is housed, described self-lubricating composite bearing is threaded connection the bottom being arranged on speed regulating bearing seat, described screw is arranged on bottom speed regulating bearing seat by thread connection, and be sleeved on leading screw and form screw pair, leading screw two ends are respectively by end bearing block before speed regulating device and speed regulating device rear end bearing seat supports, the afterbody of leading screw and the output shaft of gearmotor are connected by shaft joint, before speed regulating device, end bearing block, speed regulating device rear end bearing seat and gearmotor are separately fixed on bedplate by Bolt Connection,
Described mechanical adjustable speed drive has following functions: the permanent magnet in the relative external rotor assembly of internal rotor is axially moved, and carries out speed governing by changing axial magnetic flux area; Or make the permanent magnet in internal rotor and external rotor assembly be in complete couple state;
Described power output shaft is multidiameter structure, and it has spline, and supported by the rear end bearing in the speed regulating bearing in speed regulating bearing seat and speed regulating device rear end bearing seat, its afterbody mounting flange, to be connected with bearing axle.
One deck even air gap is there is between described permanent-magnetic outer rotor assembly and the internal rotor made with ferromagnetic material;
Described ferromagnetic material is carbon steel.
A kind of permanent magnetism asynchronous speed-adjustable device described in the utility model, when the extraneous fluctuation of load is less, described internal rotor two ends do not add end ring.
The utility model compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage:
1, the utility model heating is little, and efficiency is high, is mainly reflected in electromagnetism and mechanical structure two aspect:
(1) electromagnetism aspect: when revolutional slip is less, the outline line that most magnetic line of force is slotted along inner rotor face closes, and rotor useful flux region increases, and rotor impedance reduces, and therefore induced current is little, and generate heat little, efficiency is high; When revolutional slip is larger, due to kelvin effect, magnetic flux mainly concentrates on inner rotor face, although the induced current that now inner rotor face produces is eddy current, only has a small amount of eddy current to close along internal rotor body, major part is then closed by the good conductor end ring at internal rotor two ends, the reactance of internal rotor end is greatly reduced, thus reduces rotor impedance, make induced current little, generate heat little, efficiency is high;
(2) mechanical structure aspect: due to centrifugal blades of the present utility model and deep bead in axial direction close contact, and jointly rotate with power input shaft and permanent magnet sleeve, therefore can form centrifugal force to ventilate the axial ventilation hole on internal rotor and power input shaft form wind path, the heat in internal rotor is taken away.
To sum up, the utility model has the advantages such as heating is little, good heat dissipation, speed adjustable range are large.
2, the ferromagnetic material that the utility model internal rotor adopts is carbon steel, compare existing disc type, good conductor (as aluminium, copper etc.) material that telescopic permanent magnet speed regulation device adopts, the materials such as telescopic the adopted silicon steel sheet of cage modle and cast aluminium sliver, have the easily advantage such as processing and low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model embodiment.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the graphics opening straight trough vertically when internal rotor is cylindrical in Fig. 1.
Fig. 5 is the graphics driving cannelure vertically when internal rotor is cylindrical in Fig. 1.
Fig. 6 is the graphics opening straight trough vertically when internal rotor is taper shape in Fig. 1.
Fig. 7 is the graphics driving cannelure vertically when internal rotor is taper shape in Fig. 1.
In figure: 1, front end bearing block, 2, deep bead, 3, centrifugal blades, 4, permanent magnet sleeve, 5, internal rotor, 6, power output shaft, 7, speed regulating bearing seat, 8, rear end bearing seat, 9, rear end bearing, 10, ring flange, 11, gearmotor, 12, speed regulating device rear end bearing seat, 13, leading screw, 14, screw, 15, speed regulating bearing, 16, end bearing block before speed regulating device, 17, permanent magnet, 18, bedplate, 19, end ring, 20, power input shaft, 21, front end bearing, 22, shaft joint, 23, self-lubricating composite bearing, 24, flat guide.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Permanent magnet 17 adopts bonding mode and permanent magnet sleeve 4 to be installed together; Power input shaft 20 one end is directly connected by key and prime mover power output shaft, and the other end is connected by claw type structure or hinged bolts and permanent magnet sleeve 4, and is supported by end bearing 21 before in front end bearing block 1; Centrifugal blades 3 and deep bead 2 along pressing on the axial direction of power input shaft 20, and are arranged on front end bearing block 1 and between power input shaft 20 and permanent magnet sleeve 4 connection place; Deep bead 2 and power input shaft 20 interference fit in radial directions, drive synchronous rotary by power input shaft 20 together with centrifugal blades 3; End ring 19 adopts fusing process of intermediate or mechanical erection method to be arranged on the both sides of internal rotor 5 respectively; The middle part of power output shaft 6 is supported by speed regulating bearing 15, and power output shaft 6 rear portion is supported by rear end bearing 9; Speed regulating bearing 15 is arranged in speed regulating bearing seat 7, and rear end bearing 9 is arranged in rear end bearing seat 8; Ring flange 10 is arranged on the afterbody of power output shaft 6 and is connected with load ring flange, moment of torsion and rotating speed is exported; Self-lubricating composite bearing 23 is threaded connection the bottom being arranged on speed regulating bearing seat 7, and forms sliding pair with flat guide 24; Screw 14 is arranged on the bottom of speed regulating bearing seat 7 by thread connection, and forms screw pair with leading screw 13; Leading screw 13 two ends are supported by end bearing block before speed regulating device 16 and speed regulating device rear end bearing seat 12 respectively, and the afterbody of leading screw 13 and the output shaft of gearmotor 11 are connected by shaft joint 22; Before front end bearing block 1, speed regulating device, end bearing block 16, speed regulating device rear end bearing seat 12 and gearmotor 11 are separately fixed on bedplate 18 by Bolt Connection; Permanent magnet 17 in permanent magnet sleeve 4 and there is one deck even air gap between internal rotor 5 surface.
Operation principle of the present utility model is as follows:
The permanent magnetism asynchronous speed-adjustable device of the utility model to be a kind of with carbon steel be ferromagnet rotor of manufactured materials, comprise permanent-magnetic outer rotor assembly, internal rotor assembly, mechanical adjustable speed drive and power output shaft 6 etc., and there is one deck even air gap between permanent-magnetic outer rotor assembly and internal rotor assembly.
Power input shaft 20 wherein in permanent-magnetic outer rotor assembly is connected with prime mover power shaft, permanent magnet sleeve 4 in external rotor assembly has the extremely staggered permanent magnet 17 of N, S, just rotating magnetic field can be produced when power input shaft 20 drives external rotor assembly to rotate, rotating magnetic field to be interacted generation induced current by the internal rotor 5 be made up of carbon steel in air gap and internal rotor assembly, and this electric current is stressed and then produce moment of torsion in magnetic field.
When internal rotor assembly is identical with external rotor assembly rotating speed, internal rotor 5 does not cut rotating magnetic field, thus also can not produce induced current thereon, and therefore the rotating speed of internal rotor assembly is always lower than the rotating speed of external rotor assembly, forms asynchronous relationship.
The internal rotor 5 in internal rotor assembly can be made to move axially along power output shaft 6 by mechanical adjustable speed drive, to change the air gap contact area between permanent-magnetic outer rotor assembly and internal rotor assembly, and then change the length of internal rotor 5 cutting magnetic field, regulate internal rotor 5 induced current size with this, the moment of torsion that internal rotor 5 is transmitted and rotating speed change.
Claims (2)
1. a permanent magnetism asynchronous speed-adjustable device, is characterized in that: comprise permanent-magnetic outer rotor assembly, internal rotor assembly, mechanical adjustable speed drive and power output shaft (6);
Described permanent-magnetic outer rotor assembly comprises power input shaft (20), centrifugal blades (3), deep bead (2) and permanent magnet sleeve (4), and described power input shaft (20) one end is directly connected by key and prime mover power output shaft, the other end is connected by claw type structure or hinged bolts and permanent magnet sleeve (4); Permanent magnet (17) in permanent magnet sleeve (4) is tile-type structure, and the arc-shaped surface of permanent magnet (17) is inside, and the endoporus that each arc-shaped surface is formed is cylindrical or conical; Permanent magnet (17) in described permanent magnet sleeve (4) is circumferentially uniformly distributed and magnetic pole is radially staggered; Described centrifugal blades (3) and deep bead (2) in axial direction close contact, and jointly rotate with power input shaft (20) and permanent magnet sleeve (4);
Described internal rotor assembly comprises internal rotor (5) and end ring (19); Described internal rotor (5) is made up of ferromagnetic material, and the profile of internal rotor (5) is consistent with the internal via shape that permanent magnet (17) arc-shaped surface is formed, and is namely all cylindrical or conical; The endoporus of internal rotor (5) is splined hole, and jointly forms spline moving sets with the spline on power output shaft (6); Have ventilation hole vertically between internal rotor (5) contoured surface and spline endoporus, and jointly form heat dissipation channel with the centrifugal blades (3) on permanent-magnetic outer rotor assembly; In internal rotor assembly, the quantity of end ring (19) is two, makes by good conductor material, and is arranged on the both sides of internal rotor (5);
Described internal rotor (5) contoured surface is one of following three kinds of shapes:
Contoured surface is smooth surface;
Contoured surface opens multiple straight trough vertically, the straight trough opened and internal rotor (5) centerline parallel or angled;
Contoured surface drives multiple cannelure vertically;
The uniform air gap of one deck is had between described permanent-magnetic outer rotor assembly and internal rotor assembly; And the endoporus that in permanent magnet sleeve (4), permanent magnet (17) arc-shaped surface is formed and internal rotor (5) profile support the use;
Described mechanical adjustable speed drive is linear motion platform, comprise the speed regulating bearing seat (7) be arranged on power output shaft (6), flat guide (24), self-lubricating composite bearing (23), leading screw (13), screw (14), end bearing block (16) and speed regulating device rear end bearing seat (12) before the speed regulating device of gearmotor (11) and two end supports leading screw (13), in described speed regulating bearing seat (7), speed regulating bearing (15) is housed, described self-lubricating composite bearing (23) is threaded connection the bottom being arranged on speed regulating bearing seat (7), described screw (14) is arranged on speed regulating bearing seat (7) bottom by thread connection, and be sleeved on leading screw (13) and form screw pair, leading screw (13) two ends are supported by end bearing block before speed regulating device (16) and speed regulating device rear end bearing seat (12) respectively, the afterbody of leading screw (13) and the output shaft of gearmotor (11) are connected by shaft joint (22), before speed regulating device, end bearing block (16), speed regulating device rear end bearing seat (12) and gearmotor (11) are separately fixed on bedplate (18) by Bolt Connection,
Described mechanical adjustable speed drive has following functions: the permanent magnet (17) in the relative external rotor assembly of internal rotor (5) being axially moved, carrying out speed governing by changing axial magnetic flux area; Or make internal rotor (5) be in complete couple state with the permanent magnet (17) in external rotor assembly;
Described power output shaft (6) is multidiameter structure, it has spline, supported by the speed regulating bearing (15) in speed regulating bearing seat (7) and the rear end bearing (9) in rear end bearing seat (8), its afterbody mounting flange (10), to be connected with bearing axle;
One deck even air gap is there is between described permanent-magnetic outer rotor assembly and the internal rotor (5) made with ferromagnetic material;
Described ferromagnetic material is carbon steel.
2. a kind of permanent magnetism asynchronous speed-adjustable device according to claim 1, is characterized in that: when the extraneous fluctuation of load is less, and described internal rotor (5) two ends do not add end ring (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520343777.8U CN204597763U (en) | 2015-05-25 | 2015-05-25 | A kind of permanent magnetism asynchronous speed-adjustable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520343777.8U CN204597763U (en) | 2015-05-25 | 2015-05-25 | A kind of permanent magnetism asynchronous speed-adjustable device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597763U true CN204597763U (en) | 2015-08-26 |
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ID=53933871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520343777.8U Withdrawn - After Issue CN204597763U (en) | 2015-05-25 | 2015-05-25 | A kind of permanent magnetism asynchronous speed-adjustable device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597763U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811014A (en) * | 2015-05-25 | 2015-07-29 | 大连交通大学 | Permanent-magnet asynchronous speed-regulating device |
| CN106452008A (en) * | 2016-12-01 | 2017-02-22 | 大连交通大学 | Concentric permanent magnet gear driving device based on squirrel cage rotor |
-
2015
- 2015-05-25 CN CN201520343777.8U patent/CN204597763U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811014A (en) * | 2015-05-25 | 2015-07-29 | 大连交通大学 | Permanent-magnet asynchronous speed-regulating device |
| CN104811014B (en) * | 2015-05-25 | 2017-08-22 | 大连交通大学 | A kind of permanent magnetism asynchronous speed-adjustable device |
| CN106452008A (en) * | 2016-12-01 | 2017-02-22 | 大连交通大学 | Concentric permanent magnet gear driving device based on squirrel cage rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20170822 |