CN102943811A - Industrial application type radial permanent magnet suspension bearing - Google Patents
Industrial application type radial permanent magnet suspension bearing Download PDFInfo
- Publication number
- CN102943811A CN102943811A CN2012104648512A CN201210464851A CN102943811A CN 102943811 A CN102943811 A CN 102943811A CN 2012104648512 A CN2012104648512 A CN 2012104648512A CN 201210464851 A CN201210464851 A CN 201210464851A CN 102943811 A CN102943811 A CN 102943811A
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- Prior art keywords
- magnetic
- permanent
- ring
- clamp group
- suspension bearing
- 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 41
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract 3
- 238000005096 rolling process Methods 0.000 description 9
- 238000004134 energy conservation Methods 0.000 description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical group [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Images
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
- F16C32/0425—Passive magnetic bearings with permanent magnets on both parts repelling each other for radial load mainly
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
本发明涉及一种工业应用型径向永磁悬浮轴承。它包括磁内圈、磁外圈和陶瓷球组件保持架，所述磁内圈由一个内轴圈、若干个紧套在内轴圈上的动永磁环组和在两端压紧动永磁环组的两个内螺纹紧固盖组成，磁外圈由一个外轴圈、若干个紧套在外轴圈内的静永磁环组、在两端压紧静永磁环组的两个外端盖和将外端盖、外轴圈、静永磁环组固紧为一体成磁外圈的若干个内六角圆柱头螺钉和弹簧垫片组成，磁内圈、磁外圈由两端的内螺纹紧固盖和外端盖之间的两个陶瓷球组件相互辅助定位，构成陶瓷球组件保持架。本发明使用方便、摩擦力矩小、节能，适应于大规模应用，满足工业应用的要求，而对于轴承制造厂家易于进行标准化、系列化生产，以满足可商品化的要求。
The invention relates to an industrially applied radial permanent magnetic suspension bearing. It includes a magnetic inner ring, a magnetic outer ring and a ceramic ball assembly cage. The magnetic inner ring is composed of an inner shaft ring, a number of dynamic permanent magnet rings tightly fitted on the inner shaft ring, and a dynamic permanent magnet at both ends. The magnetic ring group consists of two internal thread fastening covers. The magnetic outer ring consists of an outer shaft ring, several static permanent magnetic ring groups tightly sleeved in the outer shaft ring, and two static permanent magnetic ring groups that are pressed at both ends. The outer end cover and the outer end cover, the outer shaft ring, and the static permanent magnetic ring group are fastened together to form a magnetic outer ring. The magnetic inner ring and the magnetic outer ring are composed of two ends. The two ceramic ball assemblies between the inner threaded fastening cover and the outer end cover are mutually assisted in positioning, forming a ceramic ball assembly cage. The invention has the advantages of convenient use, small friction torque and energy saving, and is suitable for large-scale application and meets the requirements of industrial applications, and is easy for bearing manufacturers to carry out standardized and serialized production to meet the requirements of commercialization.
Description
Technical field
The present invention relates to a kind of radial permanent magnet suspension bearing, particularly a kind of radial permanent magnet suspension bearing that can generally be applicable to large-scale industrial application.
Background technique
Magnetic suspension bearing is again referred to as magnetic bearing, be utilize magnetic force between stator and the rotor with rotor suspension in the space, make a kind of novel high-performance bearing that does not have Mechanical Contact between rotor and the stator.Owing to turning, not existing between the stator contact mechanically, so the rotor of magnetic suspension bearing can reach very high running rotating speed, and have the advantages such as mechanical wear is little, energy consumption is low, the life-span is long, need not to lubricate, pollution-free, be particularly suitable at a high speed, vacuum and the super special application such as clean.
Magnetic suspension bearing generally can be divided three classes according to working principle or magnetic force producing method: Active Magnetic Suspending Bearing (Active Magnetic Bearing, be called for short AMB), passive magnetic suspension bearing (Passive Magnetic Bearing, be called for short PMB), hybrid magnetic suspension bearing (Hybrid Magnetic Bearing is called for short HMB).Passive magnetic suspension bearing can be divided into again: permanent-magnet suspension bearing, super-conductive magnetic suspension bearing, diamagnet magnetic suspension bearing, electric power magnetic suspension bearing.Wherein, permanent-magnet suspension bearing (abbreviation Permanent-magnet bearing) is to utilize the active force between the permanent magnet to realize the stable suspersion of object on the part degrees of freedom.
Even to this day, permanent magnet suspension still is faced with insoluble technical barrier.1842, English physicist Earnshaw pointed out: interaction force is obeyed with the be inversely proportional to system of rule of square distance can not realize three-dimensional stable equilibrium.This conclusion was done citation and demonstration by the great physicist Maxwell of 19th-century, Brown has carried out inference subsequently, goes through threeth century to develop into the Earnshaw theorem: permanent-magnet suspension bearing can not all degrees of freedom be realized fully permanent magnet suspension in the space.Therefore want to obtain stable balance suspension system, will introducing initiatively in one degree of freedom at least, external force (such as electromagnetic force, mechanical force) aiding support compensates.
At present, permanent-magnet suspension bearing still is in the experimental research stage, and suction is very large during owing to the contact of magnet opposed polarity, and does not have specialized factory to make production, therefore when assembling voluntarily and installing, will suffer from a lot of difficulties and inconvenience, can not be in the industrial large-scale application that obtains.If can develop a kind of can be as rolling bearing can standardization, the Permanent-magnet bearing of producing in serial form, it one resembles surely and obtains large-scale application the rolling bearing in industrial application so, also can promote further developing of permanent-magnet suspension bearing cause simultaneously.
Summary of the invention
The object of the invention is to provides a kind of commercial Application type radial permanent magnet suspension bearing for the defective that prior art exists, the principle that it uses permanent magnet to have " two like magnetic poles repel each other; there is a natural attraction between the sexes " makes diametrically stable suspersion of rotating shaft, rely in the axial direction auxiliary bearing and carry out auxiliary positioning, utilize the ceramic ball assembly to make rotating shaft keep axially locating as retainer, the retainer that is equivalent to rolling bearing, make just to hit exactly between inside and outside two magnet ring groups and be nested, there is not axial dipole field, upwards there is certain air gap in the footpath between the two, without any friction, rely on the repulsion between the magnet ring group to reach radially equilibrium of forces fully, thereby keep diametrically stable suspersion, greatly promote the rotating speed of rotating shaft and durable in use, can effectively reduce the loss of energy, reach energy-conservation purpose.
In order to achieve the above object, the present invention adopts following technological scheme:
A kind of commercial Application type radial permanent magnet suspension bearing, comprise magnetic inner ring, magnetic outer ring and ceramic ball assembly retainer, it is characterized in that: described magnetic inner ring is comprised of individual two the internal thread fastening covers that are tightly placed in the moving permanent-magnetic clamp group on the interior blowout patche and compress moving permanent-magnetic clamp at two ends of an interior blowout patche, some (for example four); Described magnetic outer ring by an outer blowout patche, four be tightly placed in quiet permanent-magnetic clamp group in the outer blowout patche, two outer end caps compressing quiet permanent-magnetic clamp group at two ends with outer end cap, outer blowout patche, quiet permanent-magnetic clamp group are tightened up some (for example 16) the individual hexagon socket cap head screw and the compression spring that are integrated into the magnetic outer ring and form; Described magnetic inner ring and magnetic outer ring consist of ceramic ball assembly retainer by the internal thread fastening cover at two ends and two mutual auxiliary positioning of ceramic ball assembly between the outer end cap, realize the function of commercial Application type radial permanent magnet suspension bearing.
Above-mentioned commercial Application type radial permanent magnet suspension bearing reaches stable suspersion by the repulsion between quiet permanent-magnetic clamp group and the moving permanent-magnetic clamp group diametrically.The magnet ring material therefor is neodymium iron boron, all adopts axial charging, by the customization of magnet ring processing producer.
Above-mentioned commercial Application type radial permanent magnet suspension bearing, the internal diameter of magnetic inner ring is equivalent to the inner ring internal diameter of rolling bearing, and the external diameter of magnetic outer ring is equivalent to the outer ring external diameter of rolling bearing, and width is equivalent to the width of rolling bearing, simple in structure, be fit to the standardization of bearing specialized factory, producing in serial form.
The present invention compared with prior art, have following apparent outstanding feature and remarkable advantage: this commercial Application type radial permanent magnet suspension bearing is simple and reliable for structure, reduce present Permanent-magnet bearing loose mail and assembled voluntarily the inconvenience that brings, have easy to use, frictional force is little, the advantage such as energy-conservation, can carry out standardization, producing in serial form with reference to the size of conventional rolling bearing, the engineers and technicians of subscriber's main station producer only need know magnetic inner ring internal diameter
d, magnetic outer ring external diameter
DAnd bearing width
B(
b) etc. the bearing specification size, just can as rolling bearing, easily it be designed into and use in the main frame, satisfy the requirement of commercial Application.
Description of drawings
Fig. 1 is the general structure schematic diagram of one embodiment of the invention.
Embodiment
The preferred embodiments of the present invention accompanying drawings is as follows:
Embodiment one:
Referring to Fig. 1, this commercial Application type radial permanent magnet suspension bearing by internal diameter is
d, width is
bMagnetic inner ring and external diameter be
D, width is
BThe magnetic outer ring form.The magnetic inner ring is comprised of individual two the internal thread fastening covers 8 that are tightly placed in the moving permanent-magnetic clamp group 7 on the interior blowout patche and compress moving permanent-magnetic clamp at two ends of an interior blowout patche 1, some (for example four).The magnetic outer ring by an outer blowout patche 5, four be tightly placed in quiet permanent-magnetic clamp group 6 in the outer blowout patche, two outer end caps 2 compressing quiet permanent-magnetic clamp group at two ends with outer end cap, outer blowout patche, quiet permanent-magnetic clamp group are tightened up some (for example 16) the individual hexagon socket cap head screw 3 and the compression spring 4 that are integrated into the magnetic outer ring and form, magnetic inner ring, magnetic outer ring are by internal thread fastening cover and the 9 mutual auxiliary positioning of two ceramic ball assemblies between the outer end cap at two ends, consist of ceramic ball assembly retainer, realize the function of commercial Application type radial permanent magnet suspension bearing.
Embodiment two:
The present embodiment and embodiment one are basic identical, and specialization is as follows:
Above-mentioned commercial Application type radial permanent magnet suspension bearing, adjacent two magnet rings all adopt stacking in opposite directions in its moving permanent-magnetic clamp group 7 and the quiet permanent-magnetic clamp group 6, and moving permanent-magnetic clamp group 7 is built in the quiet permanent-magnetic clamp group 6, the magnet ring pole orientation is identical, being the repulsion type is nested, reach stable suspersion by the repulsion between quiet permanent-magnetic clamp group and the moving permanent-magnetic clamp group like this, diametrically.The magnet ring material therefor is neodymium iron boron, all adopts axial charging, by the customization of magnet ring processing producer.Described interior blowout patche 1, outer blowout patche 5, outer end cap 2, fastening cover 8 and hexagon socket cap head screw 3 are made by non-magnetic material.
The working principle of above-mentioned commercial Application type radial permanent magnet suspension bearing is: in the axial direction, ceramic ball assembly 9 is mainly used in axial auxiliary positioning is carried out in the inner ring rotating shaft, higher its suffered axial magnetic of Location accuracy is less, and the friction torque of radial permanent magnet suspension bearing is less.Simultaneously, ceramic ball assembly 9 also can be used to bear axial external load, and external load is larger, and the friction torque of radial permanent magnet suspension bearing is larger; Diametrically, moving permanent-magnetic clamp group 7 is enclosed within the middle of the quiet permanent-magnetic clamp group 6, and the two magnet ring group polar orientation that are nested are identical, according to around the character of magnet " two like magnetic poles repel each other, there is a natural attraction between the sexes " and the magnet and magnet around can repel each other or the principle of mutually suction as can be known, when moving permanent-magnetic clamp group 7 is not born external load, the repulsion of 6 pairs of moving permanent-magnetic clamps 7 of quiet permanent-magnetic clamp group makes it reach balance, when moving permanent-magnetic clamp group 7 when radial force produces displacement, quiet permanent-magnetic clamp group 6 will produce very large repulsion and force its state that restores balance moving permanent-magnetic clamp group 7; The active force of 6 pairs of moving permanent-magnetic clamp groups 7 of quiet permanent-magnetic clamp group mainly bears radially external load, and the ceramic ball assembly 9 that plays the auxiliary positioning effect also can bear thrust load, therefore the present invention mainly utilizes axial magnetic power to bear radially external load, can utilize again the ceramic ball assembly to bear axial external load, being a radial permanent magnet suspension bearing that friction torque is very little when mainly bearing radially external load, is a thrust ball bearing that friction torque is suitable with ceramic thrust ball bearing when being used for bearing axial external load.
This commercial Application type radial permanent magnet suspension bearing is simple and reliable for structure, reduced present permanent-magnet suspension bearing loose mail assembles the inconvenience that brings voluntarily, have easy to use, friction torque is little, energy-conservation and be adapted to the advantages such as large-scale application.In actual applications, the engineers and technicians of subscriber's main station producer only need know magnetic inner ring internal diameter
d, magnetic outer ring external diameter
DAnd bearing width
B(
b) etc. the bearing specification size, just can as rolling bearing, easily it be designed into and use in the main frame, satisfy the requirement of commercial Application, and be easy to carry out standardization, producing in serial form for bearing manufacturing firm, satisfy commercial requirement.
Claims (3)
1. commercial Application type radial permanent magnet suspension bearing, comprise magnetic inner ring, magnetic outer ring and ceramic ball assembly retainer, it is characterized in that: described magnetic inner ring is comprised of an interior blowout patche (1), several two internal thread fastening covers (8) that are tightly placed in the moving permanent-magnetic clamp group (7) on the interior blowout patche (1) and compress moving permanent-magnetic clamp group (7) at two ends; Described magnetic outer ring by an outer blowout patche (5), several are tightly placed in quiet permanent-magnetic clamp group (6) in the outer blowout patche, compress two outer end caps (2) of quiet permanent-magnetic clamp group (6) at two ends and outer end cap (2), outer blowout patche (5), quiet permanent-magnetic clamp group (6) are tightened up several hexagon socket cap head screws (3) and the compression spring (4) that are integrated into the magnetic outer ring and form; Described magnetic inner ring and magnetic outer ring consist of ceramic ball assembly retainer by internal thread fastening cover (8) and the mutual auxiliary positioning of two the ceramic ball assemblies (9) between the outer end cap (2) at two ends.
2. commercial Application type radial permanent magnet suspension bearing according to claim 1, the permanent-magnetic clamp that it is characterized in that described moving permanent-magnetic clamp group (7) and quiet permanent-magnetic clamp group (6) all adopts axial magnetized, two adjacent same specification permanent-magnetic clamps adopt stacking placement, and magnetic pole is opposite; Quiet permanent-magnetic clamp group (6) is identical with moving permanent-magnetic clamp group (7) magnetic pole, namely all becomes the repulsion type to place.
3. commercial Application type permanent-magnet suspension bearing according to claim 1 is characterized in that described interior blowout patche (1), outer blowout patche (5), outer end cap (2), fastening cover (8) and hexagon socket cap head screw (3) make by non-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104648512A CN102943811A (en) | 2012-11-19 | 2012-11-19 | Industrial application type radial permanent magnet suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104648512A CN102943811A (en) | 2012-11-19 | 2012-11-19 | Industrial application type radial permanent magnet suspension bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102943811A true CN102943811A (en) | 2013-02-27 |
Family
ID=47726782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104648512A Pending CN102943811A (en) | 2012-11-19 | 2012-11-19 | Industrial application type radial permanent magnet suspension bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102943811A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307104A (en) * | 2013-06-14 | 2013-09-18 | 合肥神马科技集团有限公司 | Magnetic suspension bearing |
| CN104895923A (en) * | 2015-06-12 | 2015-09-09 | 魏伯卿 | Permanent magnet low resistance bearing |
| CN105099108A (en) * | 2014-05-22 | 2015-11-25 | 华为技术有限公司 | Fan motor and fan |
| CN106053778A (en) * | 2016-07-20 | 2016-10-26 | 重庆鼎润医疗器械有限责任公司 | Maglev probe |
| CN106369051A (en) * | 2016-09-26 | 2017-02-01 | 北京航空航天大学 | Protection device of magnetic suspension bearing |
| CN109281938A (en) * | 2018-12-02 | 2019-01-29 | 迈格钠磁动力股份有限公司 | A kind of permanent-magnet suspension bearing that magnet safeguard structure is set |
| CN109882500A (en) * | 2018-12-17 | 2019-06-14 | 徐振钢 | It is a kind of to carry sliding bearing |
| CN110219888A (en) * | 2019-06-14 | 2019-09-10 | 迈格钠磁动力股份有限公司 | The permanent-magnet suspension bearing and sea transport equipment for having magnet safeguard structure |
| WO2021128592A1 (en) * | 2019-12-25 | 2021-07-01 | 中国科学院微小卫星创新研究院 | Low-damping rotation apparatus and operation method therefor |
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| US20050140228A1 (en) * | 2003-12-25 | 2005-06-30 | Delta Electronics, Inc. | Magnetic bearing system |
| CN101482143A (en) * | 2008-01-10 | 2009-07-15 | 杜洲 | Magnetic suspension bearing |
| CN202082280U (en) * | 2011-06-14 | 2011-12-21 | 大连大友高技术陶瓷有限公司 | High-precision self-aligning roller bearing |
| CN102537047A (en) * | 2011-02-25 | 2012-07-04 | 上海大学 | Preloaded radial permanent magnet bearing |
-
2012
- 2012-11-19 CN CN2012104648512A patent/CN102943811A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050140228A1 (en) * | 2003-12-25 | 2005-06-30 | Delta Electronics, Inc. | Magnetic bearing system |
| CN101482143A (en) * | 2008-01-10 | 2009-07-15 | 杜洲 | Magnetic suspension bearing |
| CN102537047A (en) * | 2011-02-25 | 2012-07-04 | 上海大学 | Preloaded radial permanent magnet bearing |
| CN202082280U (en) * | 2011-06-14 | 2011-12-21 | 大连大友高技术陶瓷有限公司 | High-precision self-aligning roller bearing |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307104B (en) * | 2013-06-14 | 2015-12-02 | 合肥神马科技集团有限公司 | A kind of magnetic suspension bearing |
| CN103307104A (en) * | 2013-06-14 | 2013-09-18 | 合肥神马科技集团有限公司 | Magnetic suspension bearing |
| CN105099108B (en) * | 2014-05-22 | 2017-11-17 | 华为技术有限公司 | Fan electromotor and fan |
| CN105099108A (en) * | 2014-05-22 | 2015-11-25 | 华为技术有限公司 | Fan motor and fan |
| CN104895923A (en) * | 2015-06-12 | 2015-09-09 | 魏伯卿 | Permanent magnet low resistance bearing |
| CN106053778A (en) * | 2016-07-20 | 2016-10-26 | 重庆鼎润医疗器械有限责任公司 | Maglev probe |
| CN106053778B (en) * | 2016-07-20 | 2019-03-19 | 重庆鼎润医疗器械有限责任公司 | A kind of magnetic suspension gauge head |
| CN106369051A (en) * | 2016-09-26 | 2017-02-01 | 北京航空航天大学 | Protection device of magnetic suspension bearing |
| CN109281938A (en) * | 2018-12-02 | 2019-01-29 | 迈格钠磁动力股份有限公司 | A kind of permanent-magnet suspension bearing that magnet safeguard structure is set |
| CN109281938B (en) * | 2018-12-02 | 2023-10-24 | 迈格钠磁动力股份有限公司 | Permanent magnet suspension bearing with magnet protection structure |
| CN109882500A (en) * | 2018-12-17 | 2019-06-14 | 徐振钢 | It is a kind of to carry sliding bearing |
| CN110219888A (en) * | 2019-06-14 | 2019-09-10 | 迈格钠磁动力股份有限公司 | The permanent-magnet suspension bearing and sea transport equipment for having magnet safeguard structure |
| CN110219888B (en) * | 2019-06-14 | 2024-01-26 | 迈格钠磁动力股份有限公司 | Permanent magnet suspension bearing with magnet protection structure and marine transportation equipment |
| WO2021128592A1 (en) * | 2019-12-25 | 2021-07-01 | 中国科学院微小卫星创新研究院 | Low-damping rotation apparatus and operation method therefor |
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Application publication date: 20130227 |