CN106594072A - Non-thrust-disc radial and axial integrated permanent magnet biased magnetic bearing - Google Patents
Non-thrust-disc radial and axial integrated permanent magnet biased magnetic bearing Download PDFInfo
- Publication number
- CN106594072A CN106594072A CN201611069235.1A CN201611069235A CN106594072A CN 106594072 A CN106594072 A CN 106594072A CN 201611069235 A CN201611069235 A CN 201611069235A CN 106594072 A CN106594072 A CN 106594072A
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- Prior art keywords
- magnetic
- axial
- radial
- magnetic bearing
- permanent magnet
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- Granted
Links
- 230000004907 flux Effects 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 3
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 210000001215 vagina Anatomy 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002964 excitative effect Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
A non-thrust-disc radial and axial integrated permanent magnet biased magnetic bearing comprises a permanent magnet body, a magnetic conducting ring, a radial stator core, radial coils, a rotor core, an annular magnetic pole, an axial stator core, axial coils, a thread ring and a rotating shaft, wherein the permanent magnet is used for providing a biased magnetic field; biased magnetic flux and axial control magnetic flux are transferred through the annular magnetic pole; an annular air gap which is longer than a radial air gap is formed between the annular magnetic pole and the thread ring; the magnetic bearing generates force in a differential manner through four magnetic poles of a radial stator; the magnetic bearing is free of a thrust disc and generates force through the end surface of the thread ring; the thread ring is used for compressing the rotor core. An existing radial and axial integrated magnetic bearing axially generates forces through the thrust disc, thus the outside diameter of a rotor, the linear velocity and the ventilation losses are increased, and the mechanical safety margin and critical speed of rotation of the rotor are reduced. The non-thrust-disc radial and axial integrated permanent magnet biased magnetic bearing can solve the shortage of the existing radial and axial integrated magnetic bearing which axially generates force through the thrust disc; the non-thrust-disc radial and axial integrated permanent magnet biased magnetic bearing has the advantages of reducing the losses, and improving the mechanical safety margin and critical speed of rotation of the rotor.
Description
Technical field
The present invention relates to a kind of non-contact magnetically suspension bearing, particularly a kind of without the integrated permanent-magnet biasing of thrust disc footpath axial direction
Magnetic bearing, can be used as the contactless support of rotary part in the plant equipment such as motor, lathe.
Background technology
The magnetic levitation technology of high-speed rotating machine is applied to, often requires that magnetic bearing dynamic property is good, reliability is high, especially
When being applied to rigid rotator high-speed rotating machine, also require that rotor fundamental frequency is high, wind moussing loss is little, and such as magnetic levitaion motor drives
Dynamic turbogenerator of aerator, compressor and electricity generation system etc..Traditional magnetic suspension system needs to configure two radial directions
Magnetic bearing and an axial magnetic bearing, constrain five degree of freedom of rotor.In order to improve the dynamic of magnetic suspension turbine machinery
Can, efficiency is improved, volume is reduced, hoisting power density needs to be collected a radial direction magnetic bearing and an axial magnetic bearing
Into, and permanent magnet is adopted for radial and axial offer bias magnetic field, here it is footpath axial direction integrated permanent-magnet biased magnetic bearing, such as
Shown in Fig. 1.The structure to a certain extent, reduces volume, reduces loss, improves rotor fundamental frequency, improves dynamic
State property energy.But its axial direction is exerted oneself by thrust disc, and thrust disc increases trochiterian external diameter, increases wind moussing loss, increases rotor table
Upper thread speed, reduces rotor dynamics margin of safety, affects rotor dynamic property.
The content of the invention
The present invention technology solve problem be：There is thrust disc for existing footpath axial direction integrated permanent-magnet biased magnetic bearing
Deficiency, proposes one kind without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, and the structure can improve rotor forces with reduce loss
Learn margin of safety and rotor dynamic property.
The present invention technical solution be：Without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, by permanent magnet, lead
Magnet ring, radial stator iron core, radial coil, rotor core, annular magnetic pole, axial stator unshakable in one's determination, axial coil, threaded collar, turn
Axle is constituted, and permanent magnet is an axial annulus, is magnetized vertically, and permanent magnet is clipped between magnetic guiding loop and annular magnetic pole, is magnetic bearing
Bias magnetic field is provided, and isolates radial and axial control magnetic field, realize radial and axial control decoupling.Radial stator is unshakable in one's determination and turns
Form radial air gap between sub- iron core, permanent magnet bias magnetic flux and axially control magnetic flux is conducted by annular magnetic pole, annular magnetic pole with
Annulus gap is formed between magnetic conduction threaded collar, annulus gap length is more than radial air gap length.Magnetic bearing radial stator bag unshakable in one's determination
Containing 4 magnetic poles, connected by yoke portion between magnetic pole, radial coil is wound with outside magnetic pole, is exerted oneself with differential fashion.Magnetic bearing axial
Remove thrust disc, exerted oneself using threaded collar end face, threaded collar is to compress rotor core.Axial stator is unshakable in one's determination and annular magnetic pole it
Between be axial coil, axial stator is unshakable in one's determination to leave certain interval and threaded collar end face between, forms axial air-gap.Without thrust disc footpath
Axially integral permanent magnet biased magnetic bearing, it is characterised in that：Axially remove thrust disc, exerted oneself using threaded collar end face.Annular gas
1.5～2.0 times for radial air gap length of gap length.Described permanent magnet is an axial annulus, is magnetized vertically.Described footpath
It is that repeatedly system is formed the good electric thin steel sheet magnetic material punching press of magnetic property to stator core and rotor core；Magnetic guiding loop, ring
Shape magnetic pole, axial stator be unshakable in one's determination and threaded collar is using the material that magnetic property is good, and such as electrical pure iron, 1J50 or silicon steel is appointed
Meaning one kind is made.1～1.5 times for radial air gap length of axial air-gap length.
The principle of such scheme is：The present invention removes axial thrust disk, is axially being exerted oneself using threaded collar end face, is introducing ring
Shape magnetic pole, to close permanent magnetic circuit and axial magnetic circuit, the length for designing annulus gap is more than radial air gap.Permanent magnet is magnetic
The radial and axial offer bias magnetic field of bearing, permanent magnetic field pass through magnetic guiding loop, radial stator iron core, radial air gap, radial rotor
Unshakable in one's determination, threaded collar, is divided into two-way through annulus gap and axial air-gap, then unshakable in one's determination respectively through annular magnetic pole and axial stator,
Then converge all the way, to form closed-loop path.Electromagnetism magnetic field radial through radial stator is unshakable in one's determination and magnetic guiding loop, radial air gap,
Radial rotor is unshakable in one's determination to constitute closed-loop path；Electromagnetism magnetic field is axially through axial stator iron core, annular magnetic pole, annulus gap, spiral shell
Stricture of vagina ring, axial air-gap constitute closed-loop path.In radial air gap, the electromagnetism magnetic field that permanent magnet bias magnetic field and radial coil are produced is carried out
Superposition produces radial electromagnetic force.In axial air-gap, the electromagnetism magnetic field that permanent magnet bias magnetic field and axial coil are produced is overlapped product
Raw axial electromagnetic force.Compared to existing footpath axial direction integrated permanent-magnet biased magnetic bearing, the structure eliminates axial thrust disk, carries
Systematic function is risen.The present invention permanent magnetic circuit be：Magnetic flux from permanent magnet N poles, by magnetic guiding loop, radial stator it is unshakable in one's determination,
Radial air gap, rotor core, threaded collar, are divided into two-way through annulus gap and axial air-gap, then respectively through annular magnetic pole and
Axial stator is unshakable in one's determination, then converges all the way, to return to permanent magnet S pole, forms permanent magnet circuit, as shown in Figure 2.Electromagnetic circuit is in footpath
To by taking the magnetic flux produced after X positive directions pole coil is powered as an example：Electromagnetism magnetic field pass through X positive directions magnetic pole of the stator and magnetic guiding loop,
It is divided into three tunnels respectively by X negative directions, Y positive directions and Y negative direction stator core magnetic poles, through the corresponding air gap of three magnetic poles,
Converge to radial rotor unshakable in one's determination, X positive directions magnetic pole is returned to through X positive direction air gaps and constitute closed-loop path, as shown in Figure 3；Electromagnetism
Magnetic field in axial magnetic circuit is：Electromagnetism magnetic field is by axial stator iron core, annular magnetic pole, annulus gap, threaded collar, axial air-gap
Return to axial stator iron core magnetic poles composition closed-loop path as shown in Figure 4.
Present invention advantage compared with prior art is：The axially integral magnetic bearing in existing footpath is axially adopting thrust disc
Exert oneself, thrust disc increases trochiterian external diameter, increase wind moussing loss, increase rotor surface linear velocity, reduce rotor dynamics abundant safely
Degree, reduces critical speed, affects rotor dynamic property.The present invention removes the axial thrust disk of the axially integral magnetic bearing in footpath, adopts
Exerted oneself with magnetic conduction threaded collar end face, with reduce loss, improve the advantage of rotor dynamics margin of safety and rotor dynamic property.
Description of the drawings
Fig. 1 is the existing footpath axial direction integrated permanent-magnet biased magnetic bearing exerted oneself using thrust disc in axial direction；
Fig. 2 is cut without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing permanent magnetic circuit for the technology of the present invention solution
Face figure；
Fig. 3 is the technology of the present invention solution without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing radial direction electromagnetism magnetic
Road sectional view；
Fig. 4 is the technology of the present invention solution without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing axial magnetic magnetic
Road sectional view；
Specific embodiment
As shown in Fig. 2 be the technology of the present invention solution without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, i.e.,
The present invention primitive form, it by 1 permanent magnet 1,1,3,1 radial direction magnetizing coil 4 of radial stator iron core of magnetic guiding loop 2,1,
1 annular magnetic pole 7,1 of radial rotor iron core 6,1 axial stator iron core 8,1 axial direction 9,1 magnetic conduction threaded collar of magnetizing coil
11st, 1 armature spindle 13 is constituted.Annular permanent magnet 1 is clipped between magnetic guiding loop 2 and annular magnetic pole 7, provides biasing magnetic for magnetic bearing
, and isolate radial and axial control magnetic field, realize radial and axial control decoupling.Radial stator unshakable in one's determination 3 and rotor core 6 it
Between form radial air gap 5, permanent magnet bias magnetic flux and axially control magnetic flux is conducted by annular magnetic pole 7, annular magnetic pole 7 and magnetic conduction spiral shell
Annulus gap 10 is formed between stricture of vagina ring 11,10 length of annulus gap is more than 5 length of radial air gap, and 10 length of annulus gap is
1.5～2.0 times of 5 length of radial air gap, radial air gap typically between 0.2～0.6 millimeter, annulus gap typically 0.3～
Between 1.2 millimeters.When rotor radial displacement very little, annular magnetic pole 7 is exerted oneself minimum.Magnetic bearing radial stator unshakable in one's determination 3 includes 4
Magnetic pole, is connected by yoke portion between magnetic pole, and radial direction magnetizing coil 4 is wound with outside magnetic pole, at radial air gap permanent magnet bias magnetic field and
Radially control magnetic field superposition, is exerted oneself with differential fashion.Magnetic bearing axial removes thrust disc, is gone out using 11 end face of magnetic conduction threaded collar
Power, magnetic conduction threaded collar 11 is to compress radial rotor 3 laminations of iron core.It is axially to swash between axial stator unshakable in one's determination 8 and annular magnetic pole 7
Magnetic coil 9, leaves certain interval between axial stator unshakable in one's determination 8 and 11 end face of magnetic conduction threaded collar, forms axial air-gap 12, and permanent magnetism is inclined
Put magnetic field and axially control magnetic field is superimposed at air gap, produce axial electromagnetic force.
Magnetic guiding loop 2, annular magnetic pole 7, axial stator unshakable in one's determination 8 and magnetic conduction threaded collar 11 used by the invention described above technical scheme
Made with the good material of magnetic property, such as electrical pure iron, various carbon steels, cast iron, cast steel, steel alloy, 1J50 and 1J79 etc.
Magnetic material.Radial stator unshakable in one's determination 3 and radial rotor iron core 6 can with magnetic property good electric thin steel sheet such as electrical pure iron,
Repeatedly system is formed for the magnetic material punching presses such as electrical steel plate DR510, DR470, DW350,1J50 and 1J79.The material of permanent magnet 1 is
The good rare-earth permanent magnet of magnetic property or ferrite permanent magnet, permanent magnet 1 are an axial annulus, are magnetized vertically.It is radially excitatory
Coil 4 and axial magnetizing coil 9 are formed with paint-dipping drying after the electromagnetic wire coiling of well conducting.
Claims (5)
1. it is without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, unshakable in one's determination by permanent magnet (1), magnetic guiding loop (2), radial stator
(3), radial coil (4), rotor core (6), annular magnetic pole (7), axial stator iron core (8), axial coil (9), threaded collar
(11), rotating shaft (13) composition, it is characterised in that：Permanent magnet (1) is clipped between magnetic guiding loop (2) and annular magnetic pole (7), is magnetic bearing
Bias magnetic field is provided, and isolates radial and axial control magnetic field, realize radial and axial control decoupling, radial stator iron core (3)
Radial air gap (5) is formed between rotor core (6), permanent magnet bias magnetic flux and axially control magnetic flux are by annular magnetic pole (7) biography
Lead, between annular magnetic pole (7) and threaded collar (11), form annulus gap (10), annulus gap (10) length is more than radial air gap
(5) length；Magnetic bearing radial stator iron core (3) is connected by yoke portion between magnetic pole, footpath is wound with outside magnetic pole comprising 4 magnetic poles
To coil (4), exerted oneself with differential fashion；Magnetic bearing axial removes thrust disc, is exerted oneself using magnetic conduction threaded collar (11) end face, screw thread
Ring (11) is to compress rotor core (3) lamination；It is axial coil (9) between axial stator iron core (8) and annular magnetic pole (7),
Certain interval is left between axial stator iron core (8) and threaded collar (11) end face, axial air-gap (12) is formed.
2. according to claim 1 without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, it is characterised in that：Annular gas
1.5～2.0 times for radial air gap (5) length of gap (10) length.
3. according to claim 1 without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, it is characterised in that：Described
Radial stator iron core (3) and radial rotor iron core (6) are for the good electric thin steel sheet magnetic material punching press of magnetic property is repeatedly made
Into；Magnetic guiding loop (2), annular magnetic pole (7), axial stator iron core (8) and magnetic conduction threaded collar (11) are good using magnetic property
Material, such as any one of electrical pure iron, 1J50 or silicon steel are made.
4. according to claim 1 without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, it is characterised in that：Described
Permanent magnet (1) is an axial annulus, magnetizes vertically.
5. according to claim 1 without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing, it is characterised in that：Axial gas
1～1.5 times for radial air gap (5) length of gap (12) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069235.1A CN106594072B (en) | 2016-11-29 | 2016-11-29 | One kind is without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611069235.1A CN106594072B (en) | 2016-11-29 | 2016-11-29 | One kind is without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594072A true CN106594072A (en) | 2017-04-26 |
| CN106594072B CN106594072B (en) | 2017-11-14 |
Family
ID=58595377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611069235.1A Expired - Fee Related CN106594072B (en) | 2016-11-29 | 2016-11-29 | One kind is without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing |
Country Status (1)
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| CN (1) | CN106594072B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181359A (en) * | 2017-06-15 | 2017-09-19 | 深圳麦格动力技术有限公司 | Multilayer permanent magnetism off-set magnetic suspension unit, magnetic suspension motor and domestic air conditioning |
| CN108087424A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of magnetic suspension swivel bearing |
| CN108361279A (en) * | 2018-02-05 | 2018-08-03 | 北京航空航天大学 | Orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure |
| CN108386448A (en) * | 2018-02-05 | 2018-08-10 | 北京航空航天大学 | Orthogonal magnetic circuit radial magnetic bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure |
| CN108547867A (en) * | 2018-03-16 | 2018-09-18 | 江苏大学 | A kind of three degree of freedom spherical hybrid magnetic bearing of axial direction self-loop |
| CN108869558A (en) * | 2018-01-12 | 2018-11-23 | 至玥腾风科技投资集团有限公司 | A kind of control method of bearing, rotor-support-foundation system and bearing |
| CN110848253A (en) * | 2019-11-11 | 2020-02-28 | 北京航空航天大学 | Three-degree-of-freedom radial-axial integrated hybrid magnetic bearing |
| CN113048148A (en) * | 2019-12-28 | 2021-06-29 | 坎德拉（深圳）科技创新有限公司 | Magnetic bearing and rotating mechanism using same |
| CN113285558A (en) * | 2021-04-22 | 2021-08-20 | 东南大学 | Bias magnetic field adjustable force balance type stator permanent magnet motor magnetic bearing |
| CN113544386A (en) * | 2019-04-25 | 2021-10-22 | 株式会社岛津制作所 | Vacuum pump |
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| CN1648478A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased internal rotor radial magnetic bearing |
| US20100109463A1 (en) * | 2008-10-31 | 2010-05-06 | University Of Virginia Patent Foundation | Hybrid Five Axis Magnetic Bearing System Using Axial Passive PM Bearing Magnet Paths and Radial Active Magnetic Bearings with Permanent Magnet Bias and Related Method |
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| CN102072249A (en) * | 2011-01-13 | 2011-05-25 | 北京航空航天大学 | Large-bearing-capacity radial magnetic bearing |
| CN204664156U (en) * | 2015-05-27 | 2015-09-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet biased axial magnetic suspension bearing and centrifugal compressor |
-
2016
- 2016-11-29 CN CN201611069235.1A patent/CN106594072B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1648478A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased internal rotor radial magnetic bearing |
| US20100109463A1 (en) * | 2008-10-31 | 2010-05-06 | University Of Virginia Patent Foundation | Hybrid Five Axis Magnetic Bearing System Using Axial Passive PM Bearing Magnet Paths and Radial Active Magnetic Bearings with Permanent Magnet Bias and Related Method |
| CN102042327A (en) * | 2010-12-29 | 2011-05-04 | 北京奇峰聚能科技有限公司 | Low-power consumption large-bearing capacity permanent-magnet bias mixed radial magnetic bearing |
| CN102072249A (en) * | 2011-01-13 | 2011-05-25 | 北京航空航天大学 | Large-bearing-capacity radial magnetic bearing |
| CN204664156U (en) * | 2015-05-27 | 2015-09-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet biased axial magnetic suspension bearing and centrifugal compressor |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181359A (en) * | 2017-06-15 | 2017-09-19 | 深圳麦格动力技术有限公司 | Multilayer permanent magnetism off-set magnetic suspension unit, magnetic suspension motor and domestic air conditioning |
| CN107181359B (en) * | 2017-06-15 | 2023-07-25 | 北京昆腾迈格技术有限公司 | Multilayer permanent magnet bias magnetic suspension unit, magnetic suspension motor and household air conditioner |
| CN108869558A (en) * | 2018-01-12 | 2018-11-23 | 至玥腾风科技投资集团有限公司 | A kind of control method of bearing, rotor-support-foundation system and bearing |
| CN108869558B (en) * | 2018-01-12 | 2024-04-02 | 刘慕华 | Bearing, rotor system and control method of bearing |
| CN108087424A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of magnetic suspension swivel bearing |
| CN108361279A (en) * | 2018-02-05 | 2018-08-03 | 北京航空航天大学 | Orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure |
| CN108386448A (en) * | 2018-02-05 | 2018-08-10 | 北京航空航天大学 | Orthogonal magnetic circuit radial magnetic bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure |
| CN108547867A (en) * | 2018-03-16 | 2018-09-18 | 江苏大学 | A kind of three degree of freedom spherical hybrid magnetic bearing of axial direction self-loop |
| CN113544386A (en) * | 2019-04-25 | 2021-10-22 | 株式会社岛津制作所 | Vacuum pump |
| CN113544386B (en) * | 2019-04-25 | 2024-03-26 | 株式会社岛津制作所 | Vacuum pump |
| CN110848253A (en) * | 2019-11-11 | 2020-02-28 | 北京航空航天大学 | Three-degree-of-freedom radial-axial integrated hybrid magnetic bearing |
| CN113048148A (en) * | 2019-12-28 | 2021-06-29 | 坎德拉（深圳）科技创新有限公司 | Magnetic bearing and rotating mechanism using same |
| CN113048148B (en) * | 2019-12-28 | 2023-09-01 | 坎德拉(深圳)新能源科技有限公司 | Magnetic bearing and rotating mechanism using same |
| CN113285558A (en) * | 2021-04-22 | 2021-08-20 | 东南大学 | Bias magnetic field adjustable force balance type stator permanent magnet motor magnetic bearing |
| CN113285558B (en) * | 2021-04-22 | 2022-04-29 | 东南大学 | Bias magnetic field adjustable force balance type stator permanent magnet motor magnetic bearing |
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| CN106594072B (en) | 2017-11-14 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 |