CN1307374C - Passive type axial magnetic suspension bearing of possessing damping action - Google Patents
Passive type axial magnetic suspension bearing of possessing damping action Download PDFInfo
- Publication number
- CN1307374C CN1307374C CNB2005100116899A CN200510011689A CN1307374C CN 1307374 C CN1307374 C CN 1307374C CN B2005100116899 A CNB2005100116899 A CN B2005100116899A CN 200510011689 A CN200510011689 A CN 200510011689A CN 1307374 C CN1307374 C CN 1307374C
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- China
- Prior art keywords
- permanent magnet
- bearing body
- static
- magnet
- passive type
- 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.)
- Expired - Fee Related
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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
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly
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- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The present invention relates to a passive type axial magnetic suspension bearing with a damping function, which is composed of a static part and a moving part, wherein the static part comprises a static outside bearing body, a static repulsion permanent magnet, a magnetic conductor and a damping coil; the moving part comprises a moving outside bearing body, a moving repulsion permanent magnet, an inside bearing body and a suction permanent magnet; the moving part and the static part are arranged in an aligned manner; in the static part, the magnetic conductor is arranged in the static outer bearing body, the static repulsion permanent magnet is arranged on the static outer bearing body, and the damping coil is arranged on the magnetic conductor; in the moving part, the inner bearing body is arranged in the moving outer bearing body, the moving repulsion permanent magnet is arranged on the moving outer bearing body, and the suction permanent magnet is arranged on the inner bearing body; the static repulsion permanent magnet and the moving repulsion permanent magnet have opposite polarity and form a repulsion state. The present invention saves an axial sensor, a control coil and a power amplification circuit which is required by the control coil, and the present invention lightens volume and weight, eliminates the wastage, attenuates the shock of a rotor and enhances the reliability of a system.
Description
Affiliated technical field
The present invention relates to a kind of non-contact magnetically suspension bearing, particularly a kind of passive type axial magnetic suspension bearing with damping function can be used as the contactless support of rotary component in the machinery such as motor, lathe.
Background technique
Magnetic suspension bearing is divided into active and passive type, and active magnetic suspension bearing is the magnetic suspension bearing that the superposing control coil is produced on the permanent magnet bias basis magnetic field forms, and the passive type magnetic suspension bearing is the magnetic suspension bearing that has only permanent magnetic field to form.But the passive type magnetic suspension bearing is easy to generate the displacement concussion when supported axial displacement taking place, influenced the reliability of system, the method that adopts is on the basis of passive type magnetic suspension bearing at present, axially or radially locating to add an ACTIVE CONTROL coil, this method can be eliminated the displacement concussion, but this will increase the control controller that initiatively coil current increased, and axially axial sensor will be set in system simultaneously.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of passive type axial magnetic suspension bearing with damping function is provided, this bearing does not have that power consumption, volume are little, in light weight, convenient processing and manufacture, the reliability of system of having improved.
Technical solution of the present invention is: the passive type axial magnetic suspension bearing with damping function, it is characterized in that: this magnetic bearing is a separate loading, be made up of stationary part and moving element, stationary part links to each other with the standing part of equipment, and moving element links to each other with the rotating part of equipment.Stationary part comprises static outer bearing body, static repulsion permanent magnet, magnet case, damping coil; Moving element comprises movable outer bearing body, movable repulsion permanent magnet, inner bearing body, suction permanent magnet.The moving element placement of aliging with stationary part.Static repulsion permanent magnet is relative with the polarity of movable repulsion permanent magnet, forms the state that repels each other.
Principle of the present invention is: when the passive type axial magnetic suspension bearing with damping function used in pairs, the repulsion of each bearing made the rotating part of equipment (rotor) remain on the centre of two bearings, and makes rotating part obtain contactless support.When the rotating part of equipment is subjected to external disturbance, the size of gaps of bearing moving element and stationary part will change, and the suction permanent magnet will produce flux change on damping coil, and produce damping current, stop the axial variation of rotating part, make rotor get back to the neutral position.Damping coil has makes rotor keep static effect, avoids the axial concussion of rotating part.
The present invention's advantage compared with prior art is: compare with existing active axial magnetic suspension bearing, save axial sensor, control coil and the needed controller of control coil, dwindled volume, alleviated weight, eliminated loss, improved the reliability of system; Compare with existing passive type axial magnetic suspension bearing, the present invention decays the concussion of rotor rapidly because of having installed damping coil additional, has kept the reliability of system, has saved the ACTIVE CONTROL coil, simplifies the structure.
Description of drawings
Fig. 1 is the passive type axial magnetic suspension bearing sectional view with damping function of the present invention;
Fig. 2 is the passive type axial magnetic suspension bearing sectional view with damping function of band damping conductive plate of the present invention;
Fig. 3 is the scheme of installation with passive type axial magnetic suspension bearing of damping function of the present invention.
Embodiment
As shown in Figure 1, be citation form of the present invention, this magnetic bearing is a separate loading, is made up of standing part and stationary part, and standing part links to each other with the stationary part of equipment, and moving element links to each other with the rotating part of equipment.In stationary part, magnet case 3 is installed in static outer bearing body 1 inside, and static repulsion permanent magnet 2 is installed on the static outer bearing body 1, and damping coil 4 is installed on the magnet case 3; In moving element, inner bearing body 7 is installed in movable outer bearing body 5 inside, and movable repulsion permanent magnet 6 is installed on the movable outer bearing body 5, and suction permanent magnet 8 is installed on the inner bearing body 7.
The moving element of the present invention placement of aliging with stationary part, static repulsion permanent magnet 2 is relative with the polarity of movable repulsion permanent magnet 6, forms the state that repels each other.Static repulsion permanent magnet 2 is circular magnet steel with movable repulsion permanent magnet 6, is made by rare earth permanent-magnetic material or ferrite permanent-magnet materials axial charging.Magnet case 3 should be that the good material of magnetic property is made, as electrical pure iron, various carbon steel, cast iron, cast steel, alloyed steel, 1J50 or 1J79 magnetic material.Inner bearing body 7 should be non-magnet materials such as copper, aluminium, 1Gr18Ni9Ti, plastics and makes.
Fig. 2 is an another kind of structural type of the present invention, magnet case 3 not only has good magnetic property in this structure, has excellent conducting performance simultaneously, as electrical pure iron, high-quality structural steel, cast steel, 1J50 or 1J79, at this moment can save damping coil 4, when the rotating part of equipment is subjected to external disturbance bearing air gap and changes, the magnetic flux that the suction permanent magnet produces, to in magnet case 3, produce damping current, stop the axial variation of rotating part, avoid or reduce the axial concussion of rotating part.
The present invention only bears along the axial force of moving element to stationary part, thus in use should use in pairs, as shown in Figure 3.
Claims (6)
1, the passive type axial magnetic suspension bearing that has damping function, it is characterized in that: this magnetic bearing is a separate loading, be made up of stationary part and moving element, stationary part is made up of static outer bearing body (1), static repulsion permanent magnet (2), magnet case (3), damping coil (4); Moving element is made up of movable outer bearing body (5), movable repulsion permanent magnet (6), inner bearing body (7), suction permanent magnet (8); In stationary part, magnet case (3) is installed in static outer bearing body (1) inside, and static repulsion permanent magnet (2) is installed on the static outer bearing body (1), and damping coil (4) is installed on the magnet case (3); In moving element, inner bearing body (7) is installed in movable outer bearing body (5) inside, and movable repulsion permanent magnet (6) is installed on the movable outer bearing body (1), and suction permanent magnet (8) is installed on the inner bearing body (7).
2, the passive type axial magnetic suspension bearing with damping function according to claim 1 is characterized in that: the moving element placement of aliging with stationary part, static repulsion permanent magnet (2) is relative with the polarity of movable repulsion permanent magnet (6), forms the state that repels each other.
3, according to claim 1 and the described passive type axial magnetic suspension bearing of claim 2 with damping function, it is characterized in that: static repulsion permanent magnet (2) is circular magnet steel with movable repulsion permanent magnet (6), is made by rare earth permanent-magnetic material or ferrite permanent-magnet materials axial charging.
4, the passive type axial magnetic suspension bearing with damping function according to claim 1 is characterized in that: magnet case (3) should be made by in the good material of magnetic properties such as electrical pure iron, various carbon steel, cast iron, cast steel, alloyed steel, 1J50,1J79 or silicon steel any one.
5, the passive type axial magnetic suspension bearing with damping function according to claim 1 is characterized in that: inner bearing body (7) should be non-magnet material and makes.
6, according to claim 1 and the described passive type axial magnetic suspension bearing of claim 4 with damping function, it is characterized in that: magnet case (3) material is had in the material of good magnetic property and excellent conducting performance any one when making by electrical pure iron, high-quality structural steel, cast steel, 1J50 or 1J79 etc., can save damping coil (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100116899A CN1307374C (en) | 2005-05-09 | 2005-05-09 | Passive type axial magnetic suspension bearing of possessing damping action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100116899A CN1307374C (en) | 2005-05-09 | 2005-05-09 | Passive type axial magnetic suspension bearing of possessing damping action |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1687606A CN1687606A (en) | 2005-10-26 |
| CN1307374C true CN1307374C (en) | 2007-03-28 |
Family
ID=35305648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100116899A Expired - Fee Related CN1307374C (en) | 2005-05-09 | 2005-05-09 | Passive type axial magnetic suspension bearing of possessing damping action |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1307374C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771308B (en) * | 2009-04-26 | 2015-12-16 | 张玉宝 | A kind of magnetic suspension rotor support system and magnetic suspension bearing and magnetic bias weight reducing device |
| CN101561013B (en) * | 2009-05-30 | 2010-09-01 | 华中科技大学 | Gas bearing posture active control device |
| CN101947485A (en) * | 2010-08-30 | 2011-01-19 | 福建丰力机械科技有限公司 | Permanent magnetic suspension grinder |
| CN104533948B (en) * | 2015-01-13 | 2017-07-25 | 北京航空航天大学 | A kind of passive hybrid magnetic bearing of permanent magnet offset external rotor four-degree-of-freedom master |
| CN104895922B (en) * | 2015-05-28 | 2017-03-22 | 山东大学 | Single-ended axial separation type magnetic suspension bearing applied to centrifugal artificial heart pump |
| CN105391270A (en) * | 2015-12-23 | 2016-03-09 | 苏州市凯业金属制品有限公司 | Self-adaptive magnetic damper |
| CN106655643A (en) * | 2016-10-18 | 2017-05-10 | 常州工学院 | Stabilizing device for aiming at active magnetic bearing quick-response intelligent PID controller |
| CN109026999B (en) * | 2018-10-08 | 2023-07-25 | 珠海格力电器股份有限公司 | Axial magnetic suspension bearing |
| CN109058296B (en) * | 2018-10-09 | 2024-03-05 | 珠海格力电器股份有限公司 | Stator assembly and repulsive force combined magnetic suspension axial bearing structure |
| CN109470192A (en) * | 2018-12-18 | 2019-03-15 | 南京磁谷科技有限公司 | A kind of mounting structure of electromagnetic bearing axial sensor |
| CN111561519B (en) * | 2019-02-14 | 2021-06-25 | 苏州心擎医疗技术有限公司 | Rigidity gain mechanism for magnetic suspension bearing, magnetic suspension bearing and blood pump |
| CN112039277A (en) * | 2020-08-24 | 2020-12-04 | 珠海格力电器股份有限公司 | Motor shaft end supporting structure and motor |
| CN113530971B (en) * | 2021-07-29 | 2022-02-08 | 哈尔滨工业大学 | Moving coil type self-driven magnetic suspension guide rail device and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05248437A (en) * | 1992-03-09 | 1993-09-24 | Shikoku Sogo Kenkyusho:Kk | Vertical shaft type fly wheel device having high temperature superconduction magnetic bearing |
| JPH08219158A (en) * | 1995-02-13 | 1996-08-27 | Nippon Seiko Kk | Magnetic bearing device |
| JPH0921420A (en) * | 1995-07-06 | 1997-01-21 | Osaka Shinku Kiki Seisakusho:Kk | Magnetic bearing device for high speed rotary machine |
-
2005
- 2005-05-09 CN CNB2005100116899A patent/CN1307374C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05248437A (en) * | 1992-03-09 | 1993-09-24 | Shikoku Sogo Kenkyusho:Kk | Vertical shaft type fly wheel device having high temperature superconduction magnetic bearing |
| JPH08219158A (en) * | 1995-02-13 | 1996-08-27 | Nippon Seiko Kk | Magnetic bearing device |
| JPH0921420A (en) * | 1995-07-06 | 1997-01-21 | Osaka Shinku Kiki Seisakusho:Kk | Magnetic bearing device for high speed rotary machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1687606A (en) | 2005-10-26 |
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Granted publication date: 20070328 Termination date: 20180509 |