CN106972658A - The rotor structure of magnetic suspension ultrahigh speed magneto - Google Patents
The rotor structure of magnetic suspension ultrahigh speed magneto Download PDFInfo
- Publication number
- CN106972658A CN106972658A CN201710280939.1A CN201710280939A CN106972658A CN 106972658 A CN106972658 A CN 106972658A CN 201710280939 A CN201710280939 A CN 201710280939A CN 106972658 A CN106972658 A CN 106972658A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- thrust
- permanent magnet
- axle
- bearing assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 12
- 239000007769 metal material Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 21
- 239000000696 magnetic material Substances 0.000 claims description 7
- 230000035699 permeability Effects 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 229910000816 inconels 718 Inorganic materials 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
Abstract
The present invention relates to a kind of rotor structure of magnetic suspension ultrahigh speed magneto, including thrust dish axle, sheath, permanent magnet, axle, the first magnetic axis bearing assembly, the second magnetic axis bearing assembly, thrust dish axle is made up of left-hand axis and thrust disc, and thrust disc is solid construction；The part that thrust dish axle is contacted with permanent magnet is hollow structure；The permanent magnet is cylindrical structural.Thrust disc and left-hand axis are integrally formed, it is made up of high-yield strength magnetic conductive metal material, the wherein corresponding part of thrust disc is necessary for solid construction, maximum centrifugal stress half can be reduced, the part that thrust dish axle is contacted with permanent magnet is necessary for hollow structure, can reduce the short circuit effect to magnetic field of permanent magnet.The remainder of thrust dish axle can make hollow structure, reduce the weight of axle.Thrust disc and local hollow shaft integrated design, can significantly reduce the maximum stress of thrust disk center, lifting magnetic suspension super high speed motor rotor linear velocity and rotor dynamics, while reducing the bearing capacity of magnetic bearing.
Description
Technical field
The present invention relates to a kind of magnetic suspension ultrahigh speed technical field, a kind of magnetic suspension ultrahigh speed Permanent Magnet and Electric is related particularly to
The rotor structure of machine.
Background technology
The profile of the main flow structure of current magnetic suspension ultrahigh speed magneto is as shown in figure 1, its major defect is：
(1) axle is solid construction, it is necessary to use non-magnet material, such as non-magnetic stainless steel etc. is just avoided that permanent magnet
Magnetic field short circuit is produced with the contact portion of axle, when short circuit occurs in magnetic field, huge leakage field can be produced, so as to weaken permanent magnet
Effective magnetic field；
(2) axle is solid construction, and weight is big, causes that the bearing capacity of magnetic bearing is excessive, and volume weight is higher；
(3) thrust disc must be made of permeability magnetic material, and its material is different with the material of axle, therefore thrust disc can only be made
Hollow disk, by crossing profit engagement sleeves on non-magnetic axle.Due to the effect of centrifugal force, hollow disk internal diameter is most
Big stress position, square being directly proportional for the stress and linear velocity, constrains the maximum linear velocity of rotor.
On magnetic-suspension high-speed permanent magnet machine rotor, it produces the part of the thrust disc, often maximum gauge of axial force, its
Linear velocity highest, suffered centrifugal force is maximum, and the strength of materials of thrust disc constrains the maximum linear velocity of rotor.Except taking more
How the material of high intensity, the stress of thrust disc is reduced by designing, and becomes very crucial.
The content of the invention
The present invention is limited for material, rotating speed in the prior art, and from the big deficiency of weight, there is provided a kind of magnetic suspension ultrahigh speed
The rotor structure of magneto, including thrust dish axle, sheath, permanent magnet, axle, the first magnetic axis bearing assembly, the second magnetic axis bearing assembly,
The thrust dish axle is made up of left-hand axis and thrust disc, and the thrust disc is solid construction；What thrust dish axle was contacted with permanent magnet
Part is hollow structure；The permanent magnet is cylindrical structural.Thrust disc and left-hand axis are integrally molded so as thrust dish axle, are bent by height
Take intensity magnetic conductive metal material to be made, the wherein corresponding part of thrust disc is necessary for solid construction, can reduce maximum centrifugal should
Power half, the part that thrust dish axle is contacted with permanent magnet is necessary for hollow structure, can reduce the short circuit to magnetic field of permanent magnet and make
With.The remainder of thrust dish axle can make hollow structure, reduce the weight of axle.The present invention is a kind of magnetic suspension ultrahigh speed electricity
The rotor structure of machine, its thrust disc and local hollow shaft (i.e. thrust reel) integrated design, can be significantly reduced in thrust disc
The maximum stress of the heart, lifting magnetic suspension super high speed motor rotor linear velocity and rotor dynamics, while reducing magnetic bearing
Bearing capacity.
Preferably, the side of described thrust dish axle is set with the first magnetic axis bearing assembly of radial direction magnetic bearing, the thrust
Dish axle is circular ring structure, the first magnetic axis bearing assembly and thrust disc with the first magnetic bearing component touch position, the first magnetic axis bearing assembly
Axle is assembled by being interference fitted, it is ensured that will not be released in the case where high speed rotates.
Preferably, the first magnetic axis bearing assembly by silicon steel sheet stack into reduce eddy-current loss.
Preferably, the first magnetic axis bearing assembly is identical with the structure of the second magnetic axis bearing assembly, the second magnetic axis bearing assembly
For radial direction magnetic bearing component, the second magnetic axis bearing assembly is attached with permanent magnet by interference fit, the second magnetic bearing group
Also include position limiting structure on part, this position limiting structure when suit for being positioned.
Preferably, described permanent magnet is SmCo or neodymium iron boron, and magnetizing direction is vertical with the axis of permanent magnet.Permanent magnetism
Body can both magnetize in the pre-assembly, can also magnetize after assembly.
Preferably, the sheath be annulus cylindricality, material is non-magnet_conductible material, such as titanium alloy, inconel718 or
Person's carbon fiber.
Preferably, the material of above-mentioned axle can be that magnetic conduction can also be that non-magnet_conductible material is made.If non-magnetic material
Material can both make hollow structure reduction weight or solid construction.If permeability magnetic material, then contacted with permanent magnet
One end must make hollow structure, because if magnetic conduction solid construction, can cause close magnetic circuit short circuit
Great leakage field, causing the useful flux of rotor and rotor yoke reduces.
Preferably, the thrust dish axle is made up of high-yield strength magnetic conductive metal material.
The main characteristic of the invention lies in that：1st, thrust disc and axle are integrated, and are the magnetic conductive metal material of high intensity；
2nd, thrust disc is solid disk, and compared to hollow disc structure, maximum stress reduces nearly half；3rd, axle except thrust disc it is corresponding
Part, remainder middle can be hollowed out, and especially be necessary for hollow structure close to permanent magnetism body end, this kind of structure can avoid magnetic
Leakage field caused by the short circuit of field, while effectively reducing rotor weight.
The present invention is relative to prior art, with advantages below：1st, the maximum stress of solid thrust disc compares hollow structure
Half is reduced, therefore linear velocity can improve 40% or so；2nd, axle remainder can reduce the weight of rotor with hollow, drop
The low requirement for bearing capacity of magnetic bearing；3rd, rigidity reduction influence of the hollow space on axle is smaller, but can effectively reduce rotor weight
Amount, so if it is reasonable in design, the first-order flexure critical speed of rotor can be improved.
Brief description of the drawings
In order to illustrate more clearly of the present invention, the accompanying drawing used required in being described below to embodiment is simply situated between
Continue.It should be evident that drawings in the following description are only the description to embodiments of the invention, for ordinary skill
For personnel, without having to pay creative labor, simple deformation or title can also be carried out according to technical scheme
Change, or customary means is taken, goal of the invention can also be realized.
Fig. 1 is the profile of magnetic suspension ultrahigh speed magneto in the prior art
Fig. 2 is a kind of rotor structure schematic diagram of magnetic suspension ultrahigh speed magneto
Fig. 3 is the rotor structure schematic diagram that a kind of one end axle is solid magnetic suspension ultrahigh speed magneto
Fig. 4 is the rotor structure schematic diagram that a kind of axle is solid magnetic suspension ultrahigh speed magneto
Label declaration：1- thrust dish axles；2- sheaths；3- permanent magnets；4- axles；5- the first magnetic axis bearing assemblies；
6- the second magnetic axis bearing assemblies
Embodiment
With reference to embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
Embodiment 1
As shown in Fig. 2 present embodiment discloses a kind of rotor structure of magnetic suspension ultrahigh speed magneto, it is generally classical
Three sections of axle construction.Thrust disc and left-hand axis unite two into one, and are thrust dish axle 1, are made up of high-yield strength magnetic conductive metal material,
The wherein corresponding part of thrust disc is necessary for solid construction, can reduce maximum centrifugal stress half, thrust dish axle 1 and permanent magnet
The part of 3 contacts is necessary for hollow structure, can reduce the short circuit effect to the magnetic field of permanent magnet 3.The remainder of thrust dish axle 1
Hollow structure can be made, the weight of axle 4 is reduced.The right side of thrust dish axle 1 is set with the first magnetic axis bearing assembly of radial direction magnetic bearing
5, it is circular ring structure, is typically into reduce eddy-current loss, the first magnetic axis bearing assembly 5 and thrust dish axle 1 by silicon steel sheet stack
Assembled by being interference fitted, it is ensured that do not released in the case where high speed rotates.
Permanent magnet 3 is cylindrical structural, is made up of SmCo material, magnetizing direction is vertical with the axis of cylindrical permanent magnet 3,
Magnetize or magnetized after assembling before can assembling.Sheath 2 is annulus cylindricality, this not using the high titanium alloy of tensile strength
Permeability magnetic material is made.
Axle 4 is primarily referred to as the right axle of rotor structure, and this section of shaft material can be that magnetic conduction can also be that non-magnet_conductible material is made,
The present embodiment is made of non-magnet_conductible material, and axle 4 makes hollow structure with the position that permanent magnet 3 is contacted, and can so reduce weight
Amount.
The structure of second magnetic axis bearing assembly 6 is identical with the first magnetic axis bearing assembly 5, is also to be assembled by being interference fitted.
The step for one end limited location that the left side of second magnetic axis bearing assembly 6 is connected with permanent magnet, positioning when for being set with, step is in axle
Above 4.
Sheath 2 is annulus cylindricality, and material is non-magnet_conductible material titanium alloy.
Overall assemble sequence is：First magnetic axis bearing assembly 5 is by interference fit to thrust dish axle 1, the second magnetic axis
Bearing assembly 6 passes through in interference fit to axle 4.Assembling end external diameter, the external diameter of permanent magnet 3 and the axle 4 of thrust dish axle 1 assemble end
Outside dimension is bigger than the internal diameter of sheath 2, when deflection is with work caused by the centrifugal force that the specific magnitude of interference is produced according to rotation
The thermal expansion of time is calculated, it is ensured that under maximum speed, sheath 2, which is still, tightly wales thrust dish axle 1, permanent magnet 3 and axle 4.Dress
With when, sheath 2 can be heated to the temperature of external diameter of the internal diameter more than the external diameter of thrust dish axle 1, the external diameter of permanent magnet 3 and axle 4, so
Axle 4, permanent magnet 3 and thrust dish axle 1 are assembled in place successively afterwards, waiting the temperature of sheath 2 reduces after-contraction, you can thrust dish axle
1st, permanent magnet 3 and axle 4 waling tightly, make an entirety, the positioning step of its axis 4 serves the spacing work of assembling
With.In addition to sheath 2 is heated, thrust dish axle 1, permanent magnet 3 and axle 4 can also be cooled by cooling, be allowed to reduce to enter
Luggage is matched somebody with somebody.
Embodiment 2
As shown in figure 3, present embodiment discloses a kind of rotor structure of magnetic suspension ultrahigh speed magneto, with embodiment 1
Different places are that the present embodiment axis 4 is made of that, using permeability magnetic material, the part that axle 4 is contacted with permanent magnet 3 is hollow knot
Structure, and one end away from permanent magnet 3 is using the structure of closing.Axle 4 is axle stretch end, it is necessary to connect load, and some practical occasions are needed
Will be using solid relatively good, while the advantage that hollow structure mitigates quality can also be had concurrently.
In addition, sheath 2 is carbon fibre composite, because the thermal coefficient of expansion of carbon fibre composite is essentially 0, it is impossible to
Assembled by heating, when assembling cooling can only be taken to assemble.
Embodiment 3
As shown in figure 4, present embodiment discloses a kind of rotor structure of magnetic suspension ultrahigh speed magneto, with embodiment 1
Different places are, the present embodiment axis 4 is made of non-magnet material, its generally solid construction.Axle 4 is using non-magnetic
Material, can make permanent magnet leakage field smaller.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make some improvements and modifications, these improvements and modifications also should be regarded as
In protection scope of the present invention.Although the present invention is disclosed as above with embodiment, it is not limited to the protection of the present invention
Scope, any technical staff for being familiar with this technology, in the variation and retouching made without departing from the spirit and scope of the invention,
Protection scope of the present invention all should be belonged to.
Claims (9)
1. a kind of rotor structure of magnetic suspension ultrahigh speed magneto, it is characterised in that including thrust dish axle, sheath, permanent magnet,
Axle, the first magnetic axis bearing assembly, the second magnetic axis bearing assembly, the thrust dish axle are made up of left-hand axis and thrust disc, the thrust disc
For solid construction；The part that thrust dish axle is contacted with permanent magnet is hollow structure；The permanent magnet is cylindrical structural.
2. a kind of rotor structure of magnetic suspension ultrahigh speed magneto as claimed in claim 1, it is characterised in that described pushes away
The side of power dish axle is set with the first magnetic axis bearing assembly, the thrust dish axle and the first magnetic bearing component touch position, the first magnetic axis
Bearing assembly is circular ring structure, and the first magnetic axis bearing assembly is assembled with thrust dish axle by being interference fitted.
3. a kind of rotor structure of magnetic suspension ultrahigh speed magneto as claimed in claim 2, it is characterised in that described first
Magnetic axis bearing assembly by silicon steel sheet stack into.
4. the rotor structure of any one magnetic suspension ultrahigh speed magneto as described in claims 1 to 3, it is characterised in that
The first magnetic axis bearing assembly is identical with the structure of the second magnetic axis bearing assembly, and the second magnetic axis bearing assembly is radial direction magnetic bearing component,
The second magnetic axis bearing assembly is connected with permanent magnet, also includes position limiting structure on the second magnetic axis bearing assembly.
5. the rotor structure of any one magnetic suspension ultrahigh speed magneto as described in claims 1 to 3, it is characterised in that
Described permanent magnet is SmCo or neodymium iron boron, and magnetizing direction is vertical with the axis of permanent magnet.
6. the rotor structure of any one magnetic suspension ultrahigh speed magneto as described in claims 1 to 3, it is characterised in that
The sheath is annulus cylindricality, and material is non-magnet_conductible material.
7. a kind of rotor structure of magnetic suspension ultrahigh speed magneto as claimed in claim 6, it is characterised in that described shield
The material of set is titanium alloy, inconel718 or carbon fiber.
8. the rotor structure of any one magnetic suspension ultrahigh speed magneto as described in claims 1 to 3, it is characterised in that
The axle is made up of permeability magnetic material, and one end that the axle is contacted with permanent magnet is hollow structure.
9. the rotor structure of any one magnetic suspension ultrahigh speed magneto as described in claims 1 to 3, it is characterised in that
The thrust dish axle is made up of high-yield strength magnetic conductive metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280939.1A CN106972658A (en) | 2017-04-26 | 2017-04-26 | The rotor structure of magnetic suspension ultrahigh speed magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280939.1A CN106972658A (en) | 2017-04-26 | 2017-04-26 | The rotor structure of magnetic suspension ultrahigh speed magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106972658A true CN106972658A (en) | 2017-07-21 |
Family
ID=59334014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710280939.1A Pending CN106972658A (en) | 2017-04-26 | 2017-04-26 | The rotor structure of magnetic suspension ultrahigh speed magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106972658A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947403A (en) * | 2017-12-04 | 2018-04-20 | 南京磁谷科技有限公司 | A kind of rotor structure of central stepped |
| CN107994700A (en) * | 2017-12-05 | 2018-05-04 | 西安科技大学 | A kind of superspeed permanent magnet motor rotor structure with self-starting ability |
| CN109510382A (en) * | 2018-12-11 | 2019-03-22 | 上海航天控制技术研究所 | A kind of novel magnetically levitated accumulated energy flywheel rotor |
| CN109596409A (en) * | 2019-01-21 | 2019-04-09 | 浙江飞旋科技有限公司 | Carbon fiber sheath performance test machine hypervelocity device |
| CN109617304A (en) * | 2019-01-23 | 2019-04-12 | 北京智拓博科技有限公司 | A kind of axis and its manufacturing method of used in high-speed motor |
| CN109904957A (en) * | 2019-03-05 | 2019-06-18 | 山东天瑞重工有限公司 | A kind of magnetic suspension motor rotor and its processing technology |
| CN113541358A (en) * | 2021-07-26 | 2021-10-22 | 珠海格力电器股份有限公司 | Motor rotor structure and permanent magnet motor |
| CN113765249A (en) * | 2021-08-19 | 2021-12-07 | 鑫磊压缩机股份有限公司 | Rotor structure of magnetic suspension axial flow fan |
| CN114042946A (en) * | 2021-11-26 | 2022-02-15 | 南方科技大学 | Mandrel of ultrahigh-speed air static pressure spindle |
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| JPH07327337A (en) * | 1994-05-30 | 1995-12-12 | Sumitomo Special Metals Co Ltd | Permanent magnet magnetic levitation rotary system |
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| CN205315465U (en) * | 2015-09-24 | 2016-06-15 | 南昌康富科技股份有限公司 | Rotor of hollow round pivot of high tacho generator |
| CN106300737A (en) * | 2016-09-22 | 2017-01-04 | 北京航空航天大学 | A kind of magnetic-suspension high-speed rotor structure for permanent magnet motor |
-
2017
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| JPH07327337A (en) * | 1994-05-30 | 1995-12-12 | Sumitomo Special Metals Co Ltd | Permanent magnet magnetic levitation rotary system |
| JP2001190044A (en) * | 2000-01-05 | 2001-07-10 | Sankyo Seiki Mfg Co Ltd | Magnetically levitated motor |
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| CN2803580Y (en) * | 2005-05-27 | 2006-08-09 | 汤秀清 | High speed airfloat electric manshaft |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947403A (en) * | 2017-12-04 | 2018-04-20 | 南京磁谷科技有限公司 | A kind of rotor structure of central stepped |
| CN107947403B (en) * | 2017-12-04 | 2024-02-09 | 南京磁谷科技有限公司 | Rotor structure with central stepped hole |
| CN107994700A (en) * | 2017-12-05 | 2018-05-04 | 西安科技大学 | A kind of superspeed permanent magnet motor rotor structure with self-starting ability |
| CN109510382A (en) * | 2018-12-11 | 2019-03-22 | 上海航天控制技术研究所 | A kind of novel magnetically levitated accumulated energy flywheel rotor |
| CN109596409A (en) * | 2019-01-21 | 2019-04-09 | 浙江飞旋科技有限公司 | Carbon fiber sheath performance test machine hypervelocity device |
| CN109617304A (en) * | 2019-01-23 | 2019-04-12 | 北京智拓博科技有限公司 | A kind of axis and its manufacturing method of used in high-speed motor |
| CN109904957A (en) * | 2019-03-05 | 2019-06-18 | 山东天瑞重工有限公司 | A kind of magnetic suspension motor rotor and its processing technology |
| CN109904957B (en) * | 2019-03-05 | 2019-10-25 | 山东天瑞重工有限公司 | A kind of magnetic suspension motor rotor and its processing technology |
| CN113541358A (en) * | 2021-07-26 | 2021-10-22 | 珠海格力电器股份有限公司 | Motor rotor structure and permanent magnet motor |
| CN113765249A (en) * | 2021-08-19 | 2021-12-07 | 鑫磊压缩机股份有限公司 | Rotor structure of magnetic suspension axial flow fan |
| CN114042946A (en) * | 2021-11-26 | 2022-02-15 | 南方科技大学 | Mandrel of ultrahigh-speed air static pressure spindle |
| CN114042946B (en) * | 2021-11-26 | 2022-09-27 | 南方科技大学 | Dabber of hypervelocity air static electricity main shaft |
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Address after: 300457 tower C, No.90, 12th Street, economic and Technological Development Zone, Tanggu District, Tianjin Applicant after: TIANJIN EMAGING HIGH SPEED MOTOR TECHNOLOGY Co.,Ltd. Applicant after: Tianjin Feixuan Technology Co.,Ltd. Address before: 300457 tower C, No.90, 12th Street, economic and Technological Development Zone, Tanggu District, Tianjin Applicant before: TIANJIN EMAGING HIGH SPEED MOTOR TECHNOLOGY Co.,Ltd. Applicant before: TIANJIN EMAGING TECHNOLOGY Co.,Ltd. |
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Application publication date: 20170721 |