CN103693537B - Quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine - Google Patents
Quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine Download PDFInfo
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Abstract
A kind of quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine, it is related to gearless machine technical field, including support, rotating shaft, outer rotor, inner stator, traction sheave and brake, outer rotor includes magnet mount and permanent magnet, magnet mount is arranged in rotating shaft, permanent magnet is surrounded by quasi- Halbach array and is located between inner stator periphery, inner stator and shell body, and is fixedly connected with magnet mount；Formed on the permanent magnet mounting bracket that quasi- Halbach permanent array is fixed on outer rotor by bottom surface for the regular polygon prism-shaped permanent magnet on n bars side, wherein n is the integer more than 3.Difficulty of processing is low, and the uniformity of magnet is high.Decline with Gas-gap Magnetic Field Resonance Wave component, Distribution of Magnetic Field reduces closer to ideal sinusoidal, the magnet cross section length of side, the thickness of rotor is greatly decreased, in the case of proof strength, and the rotary inertia of rotor is reduced, traction machine overall weight declines, the advantages of can improving the precision of control.
Description
Technical field
The present invention relates to gearless machine technical field, say it is a kind of simple in construction, good manufacturability, processing side in detail
Just, permanent-magnet material utilization rate is high, and transmission efficiency, noise is smaller, operates steadily, it is easy to control, quasi- Halbach with low cost
Array permanent magnetism synchnorous gearless dragging machine.
Background technology
Traction machine is the core execution unit of elevator, its performance directly affect the comfortableness of elevator operation, security and
Energy-saving effect.The developing history of traction machine generally for, experienced the tooth-like evolution to Non-tooth type.In 20th century
Just, the traction machine of friction tractive driving, this traction machine small volume and highly versatile have been invented by OTIS companies in the U.S., therefore, into
For the traction machine form being widely used at that time.Hereafter spur gear transmission mode and Worm Wheel System side are occurred in that
Formula, due to the remarkable advantage of Worm Wheel System mode, becomes the dominant form of geared elevator traction machine at that time.Arrive
The seventies, start helical gear traction machine occur, with high efficiency, high-precision advantage.In the 1990s, occurring
New-type Gear Planet Transmission traction machine.With the development of science and technology elevator the performance of traction machine is proposed small volume, efficiency high,
The higher requirement such as low speed high torque so that the traction machine of traditional Worm Wheel System gradually exposes inferior position.
From KONE elevator companies of Finland in 1996 issued first Machineroom-less elevator system based on permagnetic synchronous motor with
Come, gearless permanent-magnet synchronization elevator traction machine gets most of the attention, and is used widely in elevator industry, well-known traction machine manufacturer
The permanent-magnet synchnorous gearless dragging machine differed from one another is released successively.Compared with traditional traction machine, permanent-magnet synchnorous gearless dragging machine
With advantages below：
(l) small room (or machine room) design is used, the utilization rate of building is improved；
(2) because using permagnetic synchronous motor direct drive, traction machine transmission efficiency can improve 20%-30%；
(3) noise is significantly reduced, and can reduce noise more than 10 decibels；
(4) reduction maintenance cost and difficulty.
At present, the synchronous elevator traction machine extensive use in most of vertical lift elevator of gearless permanent-magnet, meanwhile,
Escalator traction machine also has begun to develop to gearless permanent-magnet synchronous traction machine direction.
Existing external rotor type permanent magnetism synchronous gearless machine includes support, rotating shaft, outer rotor, inner stator, traction sheave
And brake.The structure of support is provided with section] shape shell body, shell body middle part is provided with the rotating shaft installation to support internal projection
Set, rotating shaft is arranged in rotating shaft installation set through bearing, and rotating shaft installation set surrounds annular stator with shell body and installs room, and stator is installed
Indoor rotating shaft installation set is provided with inner stator.Outer rotor includes magnet mount and permanent magnet, and magnet mount, which is arranged on, to be turned
On axle, permanent magnet is located between inner stator and shell body and is fixedly connected with magnet mount, due to traction machine need the slow-speed of revolution,
It is individual extremely right that permanent magnet on the characteristic of high pulling torque, its rotor generally forms 5-15；Traction sheave is located on magnet mount side.
As State Intellectual Property Office's September in 2008 discloses an Application No. on the 10th：200810027443.4, title
For：A kind of external rotor type permanent magnetism synchronous gearless machine is said structure.
The concept of Halbach array is to be proposed by K.Halbach in 1980, is initially mainly used in high-energy physics neck
Domain, due to its unique performance, is gradually introduced in motor application and shows great advantage：
1) air-gap field is distributed in ideal sinusoidal.This can reduce the loss of stator core, it is adaptable to high-speed and high-efficiency occasion,
Torque pulsation can be eliminated simultaneously；
2) due to self-shileding the characteristics of, rotor core can be saved, and reduce motor quality；
3) high torque density, low copper loss and high efficiency can be realized using non-overlapped stator winding is concentrated；
4) magnet material utilization rate is high, can produce very high magnetic flux density.
State Intellectual Property Office discloses an Application No. on October 10th, 2007：200710057327.2, it is entitled：
The patent of invention of HALBACH permanent magnetism non-gear elevator drawing machines, it discloses drag Halbach permanent array applied to elevator
Draw the structure of machine.It is by the circular arc magnetic of different magnetizing directions in the motor of existing application Halbach permanent array
Body is pasted and fixed on rotor surface and forms quasi- Halbach array, and the quasi- Halbach array of this structure is needed to circular arc magnet
Carry out magnetizing, it is necessary to complicated magnetizing equipment, manufacturing cost is high at least four directions, the complex operation that magnetizes, waste time and energy, electricity
Energy utilization rate is low, wastes the energy.
The content of the invention
It is simple there is provided a kind of required magnetizing equipment present invention aim to address above-mentioned the deficiencies in the prior art, it is manufactured into
This is cheap, magnetizes simple to operate, time saving and energy saving, and saving Distribution of Magnetic Field in the energy, magnet, uniformly, strength consistency is high, traction machine
The high quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine of performance.
The present invention can solve above-mentioned the deficiencies in the prior art, and the technical scheme used is：
A kind of quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine, including it is support, rotating shaft, outer rotor, interior
Stator, traction sheave and brake, outer rotor include magnet mount and permanent magnet, and magnet mount is arranged in rotating shaft, permanent magnetism
Body is surrounded by quasi- Halbach array and is located between inner stator periphery, inner stator and shell body, and fixes company with magnet mount
Connect；Characterized in that, quasi- Halbach permanent array is fixed outside by bottom surface for the regular polygon prism-shaped permanent magnet on n bars side
Formed on the permanent magnet mounting bracket of rotor, wherein n is the integer more than 3.
Heretofore described n is even number.
N preferably 6,8 or 10 in the present invention.
Heretofore described regular polygon prism-shaped permanent magnet is fixed on permanent magnet mounting bracket through link, described
Link is the arc that correspondence central angle angle is m, m aliquots 360, the magnetizing direction of two neighboring prism-shaped permanent magnet into
360/n degree angle and it is sequentially arranged in along the circumference of link arc on link, the permanent magnet mounting bracket of outer rotor around default
Quasi- Halbach array is integrally formed in the prism-shaped permanent magnet that son is installed on 360/m link, 360/m link for one week altogether.
Described link is made up of at least two block-shaped arc pressuring plates that are identical, be arrangeding in parallel vertically, connecting plate
On be evenly equipped with positive n sides shape mounting hole along the circumference of connecting plate arc, the two ends of prism-shaped permanent magnet are respectively and fixedly installed to install
In hole.Prism-shaped permanent magnet on one link forms a pole of quasi- Halbach permanent array.
The structure of heretofore described support is：It is in provided with section] shell body of shape, it is provided with to support in the middle part of shell body
The rotating shaft installation set of internal projection, rotating shaft is arranged in rotating shaft installation set through bearing, and rotating shaft installation set surrounds side with shell body and opened
Mouthful annular stator room is installed, rotating shaft installation set and section are in] in the middle part of side wall between the peripheral side of shape shell body provided with to machine
The annular stator seat of seat internal projection, inner stator is arranged on annular stator seat, and permanent magnet is default around being located at by Halbach array
Between the annular sidewall of sub- periphery, inner stator and shell body and between inner stator inner circumferential, inner stator and rotating shaft installation set, and with
Magnet mount is fixedly connected.
Permanent magnet forms the quasi- Halbach permanent array of bilayer inside and outside inner stator, is made with equivalent material
Other types traction machine it is few compared to leakage field, moment of torsion is big, and permanent magnet material utilization rate is high.Equivalent material refers to adopt weight identical
Same material.Comparison diagram 6 and 7 can be seen that in the case of equivalent material, double-deck Halbach structure of the present invention
The magnetic line of force is closed inside air gap, is formed the annulus gap space of shielding, the inside and outside leakage field of the inter-air space is reduced, while gas
Gap magnetic is close also to have raising by a relatively large margin compared with single layer structure.
The magnet mount of heretofore described outer rotor is in provided with stretching into section] inside shape shell body open space
, inner stator periphery, the ring-shaped outer layer support frame between inner stator and shell body, and inner stator inner circumferential, inner stator and rotating shaft
Annular internal layer support frame between installation set, permanent magnet be located at by Halbach array in the inner circumferential of ring-shaped outer layer support frame and
On annular internal layer support frame periphery
Permanent magnet uses NdFeB material in the present invention, and magnet mount uses aluminum alloy materials.
The present invention due to use magnet block section be bottom surface for n bars side (n is even number) regular polygon prism-shaped permanent magnet,
Magnetized along certain a pair of parallel opposite side midpoint line direction, thus need to only manufacture a kind of magnet achieve that it is quasi- Halbach gusts
A variety of directions needed for row, reduction difficulty of processing and cost, the uniformity of magnet can ensure.Reduce difficulty of processing and into
In the case of this, such design can preferably approach preferable Halbach array；In the case where rotor radius is constant, forever
During the side number increase of magnet cross section regular polygon, the permanent magnet number needed for one rotor magnetic pole of composition also increases, and this makes to bring about the desired sensation
Gap magnetic field harmonics component decline, Distribution of Magnetic Field closer to ideal sinusoidal, meanwhile, the magnet cross section length of side can reduce, and thus can
So that the thickness of rotor is greatly decreased, in the case of proof strength, the rotary inertia of rotor is reduced, and traction machine is integrally weighed
Amount declines, and can improve the precision of control.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is Fig. 1 left view.
Fig. 3 is the dual layer arrangement schematic diagram of permanent magnet when permanent magnet bottom surface is octagon in the present invention.
Fig. 4 is that bottom surface is the prism-shaped permanent magnet of octagon and the assembling structure schematic diagram of link in the present invention.
Fig. 5 is Fig. 4 A to structural representation.
Fig. 6 and 7 is that in the case of equal permanent magnet material, the quasi- Halbach array structure of individual layer is double with the present invention's respectively
The quasi- Halbach array structure air gap flux density of layer is circumferentially distributed, distribution diagram of magnetic line of force.
Embodiment
Quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine as shown in Figure 1, including support 15, rotating shaft
4th, outer rotor, inner stator 13, traction sheave 2 and brake 18；Outer rotor includes magnet mount 1 and permanent magnet, magnet mount 1
In rotating shaft 4, permanent magnet is surrounded by Halbach array and is located between inner stator periphery, inner stator 13 and shell body, and with
Magnet mount 1 is fixedly connected；From figure 1 it appears that the structure of described support is：It is in provided with section] shell body of shape,
The rotating shaft installation set 8 to support internal projection is provided with the middle part of shell body, rotating shaft 4 is arranged in rotating shaft installation set 8 through bearing, rotating shaft peace
Encapsulation 8 and shell body surround the open annular stator in side and install room, and rotating shaft installation set is in section] peripheral side of shape shell body
The annular stator seat 12 to support internal projection is provided with the middle part of side wall between face, inner stator 13 is arranged on annular stator seat 12, forever
Magnet 16,10 is between the annular sidewall of the periphery of inner stator 13, inner stator and shell body and interior around being located at by Halbach array
Between stator inner circumferential, inner stator and rotating shaft installation set, and it is fixedly connected with magnet mount 1.Permanent magnet is inside and outside inner stator
Both sides form the quasi- Halbach permanent array of bilayer, and leakage field is few compared with the other types traction machine that equivalent material is made, and turn round
Square is big, and permanent magnet material utilization rate is high.The magnet mount 1 of the outer rotor is provided with embedded section] inside shape shell body
, inner stator periphery, the ring-shaped outer layer support frame 17 between inner stator and shell body, and inner stator inner circumferential, inner stator are with turning
Annular internal layer support frame 9 between axle installation set, permanent magnet 16,10 is located at ring-shaped outer layer support frame 17 by Halbach array
In inner circumferential and on the annular periphery of internal layer support frame 9.Halbach permanent array is the regular polygon prism on n bars side by bottom surface
Shape permanent magnet is fixed on the permanent magnet mounting bracket of outer rotor and formed, and wherein n is the integer more than 3.N is the even number effect more than 3
More preferably, preferably n is 6,8 or 10 to fruit.Described regular polygon prism-shaped permanent magnet is fixed on permanent magnet mounting bracket through link,
Described link is the arc that correspondence central angle angle is m, and m aliquots 360, two neighboring prism-shaped permanent magnet magnetizes
Direction is sequentially arranged in link, the permanent magnet mounting bracket of outer rotor on into 360/n degree angle and along the circumference of link arc
Around inner stator the prism-shaped permanent magnet on 360/m link, 360/m link is installed altogether for one week and standard is integrally formed
Halbach array.Inside and outside layer link is respectively by least two block-shaped identical, arcs that be arranged in parallel vertically in the present invention
Connecting plate 11,14 is constituted, and positive n sides shape mounting hole, prism-shaped permanent magnetism are evenly equipped with along the circumference of connecting plate arc on connecting plate 11,14
The two ends of body are respectively and fixedly installed in mounting hole.Prism-shaped permanent magnet on one link forms quasi- Halbach permanent
Prism-shaped permanent magnet on one pole of array or a link forms a pair of quasi- Halbach permanent array
Pole or multipair pole, are easily installed.Shown in Fig. 4, Fig. 5 is a link provided with the prism-shaped that four bottom surfaces are octagon
Permanent magnet, four permanent magnets form a pole of quasi- Halbach permanent array, it is necessary to opposite to that another of magnetic direction
Link, which coordinates, to be installed, and partner pole.
The present invention due to use magnet block section be bottom surface for n bars side regular polygon prism-shaped permanent magnet, along certain a pair
Side midpoint line direction is magnetized, therefore need to only be manufactured a kind of magnet and achieved that a variety of sides needed for quasi- Halbach array
To reduction difficulty of processing and cost, the uniformity of magnet can ensure.In the case where reducing difficulty of processing and cost, this
The design of sample can preferably approach preferable Halbach array；In the case where rotor radius is constant, permanent magnetism body section is just polygon
During the side number increase of shape, the permanent magnet number needed for one rotor magnetic pole of composition also increases, and this causes Gas-gap Magnetic Field Resonance Wave component
Decline, Distribution of Magnetic Field closer to ideal sinusoidal, meanwhile, the magnet cross section length of side can reduce, and can thus cause the thickness of rotor
Size is greatly decreased, in the case of proof strength, and the rotary inertia of rotor is reduced, and traction machine overall weight declines, Ke Yiti
The precision of height control.When 6 or 8 side is in regular polygon prism-shaped permanent magnet bottom surface, its manufacturability processed is best, processing side
Just, the magnetizing clamp of permanent magnet is simple in construction, and the manufacturing cost of magnetizing equipment is cheap, magnetizes simple to operate, time saving and energy saving, saves
The energy, Distribution of Magnetic Field is uniform in permanent magnet after magnetizing, and strength consistency is high, and traction machine performance is high.
Shown support, annular stator seat and rotating shaft installation set are integrated casting in Fig. 1, and it is default that support 15 plays fixation
Son, traction machine bonnet 6 and the effect for supporting outer rotor, the magnet mount 1 of outer rotor play fixed traction sheave 2, install permanent magnetism
The effect that body and guarantee are reliably connected with axle 4, both are traction machine critical pieces, both specific chis in the product of different parameters
It is very little to be varied from.Rotating shaft side is provided with the rotor endcap 3 being connected with the magnet mount of outer rotor, and the magnet of outer rotor is installed
Connected between frame and axle for key, the displacement of the axial direction of magnet mount 1 is limited by the shaft shoulder and rotor endcap 3, and both are integrally formed；Axle
4 axial displacement is limited by bearing and back-up ring 5；Traction sheave 2 is arranged on the cylinder of magnet mount, is reliably connected by bolt
Connect；Link is connected by bolt with magnet mount, after all magnets are installed according to the arrangement mode of regulation, inner stator
It is bolt connection between iron core and support.In order to dust-proof, dust cap 7 is installed on the support outside traction machine bonnet 6.Hollow shaft is compiled
Code device inner ring, which is arranged on, turns the tip of the axis, outer ring and the bolt connection of traction machine bonnet 6, and the sunk part of traction machine bonnet is by dust-proof
Lid 7 is covered, dust cap 7 and support bolt connection.Arrestment mechanism seizes lever 19 and brake-shoe 20 by powerless magnetic brake 18
Composition.
So that regular octahedron magnet cross section, number of pole-pairs are equal to 10 rotor as an example, the distribution feelings in rotor airgap magnetic field are analyzed
Condition, concrete condition such as Fig. 6 and 7, it can be seen that the magnet after being arranged by ad hoc fashion shows preferable Halbach array
Characteristic, external magnetic field is weakened, and internal magnetic field is reinforced, and air-gap field is in approximately Sine distribution.By suitably adjusting air gap
Thickness can improve the harmonic components of air-gap field.
Claims (5)
1. a kind of quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine, including it is support, rotating shaft, outer rotor, default
Son, traction sheave and brake, outer rotor include magnet mount and permanent magnet, and magnet mount is arranged in rotating shaft, accurate
Halbach permanent array is installed by bottom surface for the permanent magnet that the regular polygon prism-shaped permanent magnet on n bars side is fixed on outer rotor
Formed on frame, wherein n is the integer more than 3；It is characterized in that：The structure of the support is：It is in provided with section] shell of shape
The rotating shaft installation set to support internal projection is provided with the middle part of body, shell body, rotating shaft is arranged in rotating shaft installation set through bearing, rotating shaft peace
Encapsulation and shell body surround the open annular stator in side and install room, and rotating shaft installation set is in section] peripheral side of shape shell body
The annular stator seat to support internal projection is provided with the middle part of side wall between face, inner stator is arranged on annular stator seat, and permanent magnet is pressed
Halbach array is around being located between the annular sidewall of inner stator periphery, inner stator and shell body and inner stator inner circumferential, default
Between son and rotating shaft installation set；The magnet mount of the outer rotor is in provided with stretching into section] in shape shell body open space
The ring-shaped outer layer support frame in portion and annular internal layer support frame；The annular internal layer support frame is arranged on inner stator inner circumferential, and interior
Between stator and rotating shaft installation set, the ring-shaped outer layer support frame is arranged on inner stator periphery, and inner stator and shell body it
Between；Regular polygon prism-shaped permanent magnet is located in the inner circumferential of ring-shaped outer layer support frame and annular internal layer branch by Halbach array
On support periphery；And the regular polygon prism-shaped permanent magnet is fixed on magnet mount through link, the link
The arc for being m for correspondence central angle angle, m aliquots 360, and the link is block-shaped identical, vertically by least two
On the arc pressuring plate composition be arrangeding in parallel, connecting plate positive n sides shape mounting hole, prism-shaped are evenly equipped with along the circumference of connecting plate arc
The two ends of permanent magnet are respectively and fixedly installed in mounting hole.
2. quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine according to claim 1, it is characterised in that
Described n is even number.
3. quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine according to claim 2, it is characterised in that
Described n is 6,8 or 10.
4. the quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine according to claim 1 or 3, its feature
It is that the magnetizing direction of two neighboring prism-shaped permanent magnet is arranged in order into 360/n degree angle and along the circumference of link arc
The prism-shaped installed altogether on 360/m link, 360/m link for one week around inner stator on link, magnet mount
Quasi- Halbach array is integrally formed in permanent magnet.
5. quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine according to claim 1, its feature exists
In：Prism-shaped permanent magnet on a described link forms a pole of quasi- Halbach permanent array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310723202.4A CN103693537B (en) | 2013-12-25 | 2013-12-25 | Quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310723202.4A CN103693537B (en) | 2013-12-25 | 2013-12-25 | Quasi- Halbach array external rotor type permanent magnetism synchronous gearless machine |
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| CN103693537A CN103693537A (en) | 2014-04-02 |
| CN103693537B true CN103693537B (en) | 2017-07-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118788B (en) * | 2014-07-01 | 2016-08-17 | 常熟市佳能电梯配件有限公司 | External rotor type permanent magnetism drives by force gearless machine |
| EP3912685A1 (en) * | 2014-12-04 | 2021-11-24 | Eddy Current Limited Partnership | Methods of altering eddy current interactions |
| CN112217297A (en) * | 2020-09-28 | 2021-01-12 | 上海吉亿电机有限公司 | Tractor for elevator without machine room |
| CN114709041B (en) * | 2022-02-18 | 2024-04-09 | 江苏大学 | Rotary magnetic field generating device based on halbach annular array |
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| WO2004073143A1 (en) * | 2003-02-11 | 2004-08-26 | Randall Family Trust | Electric machine having an axial air gap |
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| CN100554122C (en) * | 2007-05-11 | 2009-10-28 | 天津大学 | Halbach permanent magnetism gearless elevator drag machine |
| CN201328058Y (en) * | 2008-09-10 | 2009-10-14 | 鹤山市鹤龙机电有限公司 | Low-speed, high-torque permanent-magnet motor and gearless lift traction machine |
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| CN102315707A (en) * | 2010-07-06 | 2012-01-11 | 李贵祥 | Mixed-excitation high-efficiency motor based on Halbach array |
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