CN103790962A - Magnetic push suspension bearing unit - Google Patents
Magnetic push suspension bearing unit Download PDFInfo
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- CN103790962A CN103790962A CN201410016545.1A CN201410016545A CN103790962A CN 103790962 A CN103790962 A CN 103790962A CN 201410016545 A CN201410016545 A CN 201410016545A CN 103790962 A CN103790962 A CN 103790962A
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- Prior art keywords
- magnetic
- axle
- magnetic cylinder
- cylinder
- ring
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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
- F16C39/00—Relieving load on bearings
- F16C39/06—Relieving load on bearings using magnetic means
- F16C39/063—Permanent magnets
- F16C39/066—Permanent magnets with opposing permanent magnets repelling each other
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a magnetic push suspension bearing unit, comprising a shaft, an inner magnetic ring, an outer magnetic ring, an auxiliary bearing, a limiting block and a bracket, wherein the inner magnetic ring is arranged at the near end part of the shaft; the corresponding outer magnetic ring is arranged on the bracket; the adjacent surfaces of the two magnetic rings are the same in polarity; an inner magnetic barrel for magnetizing in a radial manner is arranged on the shaft; the inner magnetic barrel is sleeved with an outer magnetic barrel for magnetizing in the radial manner, and the outer magnetic barrel is fixedly arranged on the bracket; the adjacent surfaces of the two magnetic barrels are the same in polarity; the auxiliary bearing is also arranged between the shaft and the bracket; corresponding limiting block and limiting ball are arranged at the end of the shaft; a direct contact rolling body is not formed between the shaft and the bracket; the shaft and the bracket form a suspension state by virtue of a magnetic push shaft; the shaft and the bracket are free of friction, free of abrasion, high in transmission efficiency, free of cooling and lubricating, and long in service life, and the magnetic push suspension bearing unit has high applicable value in high-speed fields of aerospace and the like.
Description
Technical field
The present invention relates to a kind of slewing gear, especially a kind of bearing unit, is specifically related to a kind of magnetic suspension shaft bearing unit.
Background technique
At present, the bearing using at machinery industry is to be all made up of bearing inner race, outer ring and intervenient rolling element mostly, it all produces friction in crossing, weares and teares, for reducing wear between driving component, need cooling and lubricated, it is low that kind of bearings has transmission efficiency, and wearing and tearing are large, the shortcoming that working life is short, and when high speed the life-span shorter, only can guarantee the normal workweek phase of tens hours.
And existing Chinese patent: 200520020138.4 disclose a kind of permanent magnetism magnetic suspension axle, formed by inside and outside cylinder-shaped magnet and two pairs of magnet rings, make inner ring assembly in state of suspension, but because its three active force faces are arranged in an airtight housing, this Standard technological requirement is high and be not easy to Installation and Debugging; Moreover because magnetic suspension bearing is a kind of flexible support, impact resistance is poor, in rotation process, external factor very easily causes radial and axial displacement or the swing of rotating shaft, and in above-mentioned patent, it axially, does not radially all have spacing protecting mechanism, and the displacement of rotating shaft swings and easily makes to occur friction, even blast on fire between magnetic patch, and especially in the application of high speed rotating shaft, this shortcoming performance is more obvious; In addition, what on market, be also shown in is electromagnetism magnetic suspension bearing mostly, and control accuracy requirement is high, structure is more complicated, cost is very high, is difficult to popularization and application.
Summary of the invention
For overcoming the deficiencies in the prior art, the present invention discloses a kind of magnetic repulsion suspension bearing unit, is intended to make magnetic bearing structure blocking, between support and axle, without the rolling element directly contacting, relies on the high speed rotating device unit of magnetic repulsion suspension.
The present invention is achieved through the following technical solutions:
Magnetic repulsion suspension bearing unit, mainly comprises: axle, internal magnetic ring, outer magnetic ring, auxiliary bearing, limiting stopper and support;
Close end at axle is axially installed internal magnetic ring, and the outer magnetic ring corresponding with internal magnetic ring is rack-mount, and internal magnetic ring and outer magnetic ring adjacent surface are same polarity; The limiting stopper corresponding with shaft end head is rack-mount, and the gap of limiting stopper and shaft end head is less than the gap of internal magnetic ring and outer magnetic ring; Between axle and support, be provided with auxiliary bearing.
In addition, also comprise interior magnetic cylinder and outer magnetic cylinder, interior magnetic cylinder is arranged on axle with one heart, and outer magnetic cylinder is sleeved on outside interior magnetic cylinder and is fixedly mounted on support, and outer magnetic cylinder internal diameter is greater than interior magnetic cylinder external diameter, and interior magnetic cylinder and outer magnetic cylinder adjacent surface are same polarity; The spacing of the gap of auxiliary bearing and support or auxiliary bearing and axle, i.e. the radially activity side-play amount of axle, under the position-limiting action of auxiliary bearing, the radially activity side-play amount of axle is less than the gap between interior magnetic cylinder and outer magnetic cylinder.
Further, spacing ball is housed between limiting stopper and shaft end head.
Auxiliary bearing can be ceramic bearing, and spacing ball can be ceramic balls, and limiting stopper can be ceramic block.
Interior magnetic cylinder or outer magnetic cylinder, can be by the realization of magnetizing of magnet steel radial radiation, or by polylith radially homopolarity magnetic shoe assemble.
Discontinuous construction of the present invention is by internal magnetic ring and outer magnetic ring, and interior magnetic cylinder and outer magnetic cylinder two form magnet, and internal magnetic ring and outer magnetic ring composition magnet ring are to, interior magnetic cylinder and outer magnetic cylinder composition magnetic cylinder pair.Interior magnetic cylinder and axle are fixed, its external diameter is less than the internal diameter of outer magnetic cylinder, two magnetic cylinder adjacent surfaces are same polarity, owing to being that radial radiation magnetizes, homopolar-repulsion is installed, and natural centering under magnetic repulsion effect, plays radial location effect, between inside and outside magnetic cylinder, maintain very little certain interval, make axle be radial suspension state.Adopt two groups of discontinuous constructions to be arranged on a support, two pairs of magnet rings of axially installing play axially locating effect to producing respectively repulsion; The internal orifice dimension of outer magnetic ring is a bit larger tham the diameter of axle, and internal magnetic ring is fixed on axle, keeps very little gap between two magnet rings, makes axle be axial suspension state.Magnetic cylinder pair and magnet ring between be also provided with auxiliary bearing, when normal mounting, auxiliary bearing and support or auxiliary bearing and axle have certain interval, also be the radially activity side-play amount of axle, but the radially activity side-play amount of axle is less than two radially gaps of magnetic cylinder, prevent that axle is in the time being subject to radial impact power, inside and outside two magnetic cylinders produce and mutually produce fire by friction, even blast; In fact, auxiliary bearing plays radially position limitation protection effect, makes the radially activity side-play amount of axle be less than the gap between interior magnetic cylinder and outer magnetic cylinder.Complete axial limiting protection by the spacing porcelain piece at axle two ends and spacing porcelain ball, axle is not rubbed between outer magnetic ring in the time being subject to axial impact.Because coordinating, two groups of discontinuous constructions install, rely on magnetic repulsion axle to be state of suspension, make between axle and support without the rolling element directly contacting, guarantee that on axle and axle, object frictionless steadily rotates, thereby between axle and support, nothing rubs, nothing is worn and torn, transmission efficiency is high, without cooling and lubricated, long service life, has very high applied value at High Speed Fields such as Aero-Space.
Accompanying drawing explanation
Fig. 1 embodiment 1 sectional structure schematic diagram
Fig. 2 embodiment 2 sectional structure schematic diagram
Fig. 3 embodiment 3 sectional structure schematic diagram
Fig. 4 embodiment 4 sectional structure schematic diagram
Fig. 5 embodiment 2 and embodiment 4 analyse and observe cross sectional representation
In figure: 1-axle, 2-internal magnetic ring, 3-outer magnetic ring, 4-interior magnetic cylinder, 5-outer magnetic cylinder, 6-auxiliary bearing, 7-limiting stopper, 8-spacing ball, 9-support.
Embodiment
Below, in conjunction with figure, the specific embodiment of the present invention is further described.
Now enumerate 4 kinds of embodiments, but specific embodiment of the invention is not limited to following form.
The magnetic repulsion suspension bearing unit of embodiment's 1 axial suspension
Referring to Fig. 1, magnetic repulsion suspension bearing unit, mainly comprises: axle, internal magnetic ring, outer magnetic ring, auxiliary bearing, limiting stopper and support; Close end at axle is installed internal magnetic ring, and the outer magnetic ring corresponding with internal magnetic ring is rack-mount, and internal magnetic ring and outer magnetic ring adjacent surface are same polarity, and internal magnetic ring and outer magnetic ring form axial magnet ring pair; The limiting stopper corresponding with shaft end head is rack-mount, and the gap of limiting stopper and shaft end head is less than the gap of internal magnetic ring and outer magnetic ring; Between axle and support, be provided with auxiliary bearing.Auxiliary bearing is ceramic bearing.Axially magnet ring is to being also arranged on the two ends up and down of axle.
This embodiment's advantage is: simple in structure, vertical installation.The axial magnet ring pair that the large I that is weight according to axle adopts repulsion to differ in size, and lower shaft is greater than the right repulsion of upper axial magnet ring to the right repulsion of magnet ring, the difference of the two repulsion equals the weight of this axle system, guarantee that auxiliary bearing does not bear axial force, the radial force of carrying out dynamically balanced situation lower bearing in axle system is also very little, extends bearing life thereby reduce wearing and tearing.Even if the larger weight of axle system also can adopt less auxiliary bearing, such structure is conducive to improve the number of moving part of axle system.As the life-span can be longer in the time of high speed to adopt ceramic bearing.
The magnetic repulsion suspension bearing unit that embodiment's 2 axial-radials suspend
Referring to Fig. 2 and 5, on embodiment 1 basis, in addition, also comprise interior magnetic cylinder and outer magnetic cylinder, interior magnetic cylinder and the concentric close end that is fixedly mounted on axle of axle, outer magnetic cylinder is sleeved on outside interior magnetic cylinder and is fixedly mounted on support, outer magnetic cylinder internal diameter is slightly larger than interior magnetic cylinder external diameter, interior magnetic cylinder and outer magnetic cylinder are diametrical magnetization, and interior magnetic cylinder and outer magnetic cylinder adjacent surface are same polarity, and interior magnetic cylinder and outer magnetic cylinder form radially magnetic cylinder pair; Gap between auxiliary bearing and support or between auxiliary bearing and axle, is also the radially activity side-play amount of axle, is less than the gap between interior magnetic cylinder and outer magnetic cylinder.
This embodiment's advantage is: this embodiment not only has embodiment 1 advantage, also axle radially also adopted to magnetic suspension, auxiliary bearing and support are provided with gap, radially also without wearing and tearing, especially while vertically installing and using in whole magnetic repulsion suspension bearing unit, be more suitable in high-speed rotary then the axle system of nothing wearing and tearing, effect is particularly remarkable.
Referring to Fig. 3, on embodiment 1 basis, further, spacing ball is housed between limiting stopper and shaft end head.Limiting stopper can be ceramic block, and spacing ball can be ceramic balls.
This embodiment's advantage is: this embodiment not only has embodiment 1 advantage, in the time that axle generation axial dipole field is moved, transfers the sliding friction of limiting stopper and shaft end head to rolling friction.Adopt pottery more to improve working life.
Referring to Figure 4 and 5, on embodiment 2 basis, further, spacing ball is housed between limiting stopper and shaft end head.Limiting stopper is ceramic block, and spacing ball is ceramic balls.
This embodiment's advantage is: further, on the basis of embodiment's 2 advantages, in the time that axle generation axial dipole field is moved, transfer the sliding friction of limiting stopper and shaft end head to rolling friction.And protect axial magnet ring adjacent surface can not rub.Guarantee that ultrahigh rotation speed machinery moves more reliably.There are very high and use value at High Speed Fields such as Aero-Space.
Above in each embodiment, interior magnetic cylinder or outer magnetic cylinder, can by magnet steel radial radiation magnetize realize or polylith radially homopolarity magnetic shoe assemble.
The foregoing is only better possible embodiments of the present invention, not thereby limit to the scope of the claims of the present invention, therefore the equivalent structure that every utilization description of the present invention is done changes, be all contained in protection scope of the present invention.
Claims (7)
1. a magnetic repulsion suspension bearing unit, comprising: axle, internal magnetic ring, outer magnetic ring, auxiliary bearing, limiting stopper and support; Close end at axle is axially installed internal magnetic ring, and the outer magnetic ring corresponding with internal magnetic ring is rack-mount, and internal magnetic ring and outer magnetic ring adjacent surface are same polarity; The limiting stopper corresponding with shaft end head is rack-mount, and the gap of limiting stopper and shaft end head is less than the gap of internal magnetic ring and outer magnetic ring; Between axle and support, be provided with auxiliary bearing.
2. magnetic repulsion suspension bearing unit according to claim 1, is characterized in that, also comprises outer magnetic cylinder and interior magnetic cylinder; Interior magnetic cylinder is fixedly mounted on axle, and outer magnetic cylinder is sleeved on outside interior magnetic cylinder and is fixedly mounted on support, and outer magnetic cylinder internal diameter is greater than interior magnetic cylinder external diameter, and interior magnetic cylinder and outer magnetic cylinder adjacent surface are same polarity; The radially activity side-play amount of axle is less than the gap between interior magnetic cylinder and outer magnetic cylinder.
3. according to magnetic repulsion suspension bearing unit described in claim 1 or 2, it is characterized in that, spacing ball is housed between limiting stopper and shaft end head.
4. according to magnetic repulsion suspension bearing unit described in claim 1 or 2, it is characterized in that, auxiliary bearing is ceramic bearing.
5. according to magnetic repulsion suspension bearing unit described in claim 1 or 2, it is characterized in that, limiting stopper is ceramic block.
6. magnetic repulsion suspension bearing unit according to claim 3, is characterized in that, spacing ball is ceramic balls.
7. magnetic repulsion suspension bearing unit according to claim 2, is characterized in that, the outer magnetic cylinder of interior magnetic cylinder by magnet steel radial radiation magnetize realize or by polylith radially homopolarity magnetic shoe assemble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410016545.1A CN103790962A (en) | 2014-01-14 | 2014-01-14 | Magnetic push suspension bearing unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410016545.1A CN103790962A (en) | 2014-01-14 | 2014-01-14 | Magnetic push suspension bearing unit |
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| CN103790962A true CN103790962A (en) | 2014-05-14 |
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| CN201410016545.1A Pending CN103790962A (en) | 2014-01-14 | 2014-01-14 | Magnetic push suspension bearing unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017072251A (en) * | 2015-10-08 | 2017-04-13 | エスカエフ・マニュティック・メシャトロニク | Rotary machine having magnetic and mechanical bearings |
| CN107226220A (en) * | 2017-05-09 | 2017-10-03 | 哈尔滨工业大学 | Magnetic suspension support meanss for the stable rotation of satellite load |
| CN108331836A (en) * | 2018-01-23 | 2018-07-27 | 哈尔滨工程大学 | A kind of magnetic suspension separation transmission shaft structure and vertical axis aerogenerator group |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54121143U (en) * | 1978-02-13 | 1979-08-24 | ||
| CN1229307A (en) * | 1998-03-12 | 1999-09-22 | 科宝电子株式会社 | Bearing structure |
| JP2001173652A (en) * | 1999-12-22 | 2001-06-26 | Matsushita Electric Ind Co Ltd | Energy storage device |
| CN1948746A (en) * | 2006-10-17 | 2007-04-18 | 刘骁 | Vertical full magnetic suspension wind force power generator |
| CN101420150A (en) * | 2008-11-28 | 2009-04-29 | 东南大学 | Energy accumulation device for fly wheel |
| CN201546904U (en) * | 2009-11-06 | 2010-08-11 | 李国宏 | Permanent magnetic floating vertical axis wind driven generator |
| CN102082483A (en) * | 2011-02-16 | 2011-06-01 | 东南大学 | Flywheel energy storing device with permanent magnet bearing and thrust bearing |
| CN103335021A (en) * | 2013-07-08 | 2013-10-02 | 北京飞轮储能柔性研究所 | Combination bearing of flywheel battery magnetic suspension and passive dynamic pressure liquid floated damping |
| CN203362830U (en) * | 2013-07-18 | 2013-12-25 | 上海博红科工贸有限公司 | Axial single-direction thrust permanent magnetic bearing |
| CN203655898U (en) * | 2014-01-14 | 2014-06-18 | 北京良明同创水处理设备开发中心 | Magnetic levitation force suspension bearing unit |
-
2014
- 2014-01-14 CN CN201410016545.1A patent/CN103790962A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54121143U (en) * | 1978-02-13 | 1979-08-24 | ||
| CN1229307A (en) * | 1998-03-12 | 1999-09-22 | 科宝电子株式会社 | Bearing structure |
| JP2001173652A (en) * | 1999-12-22 | 2001-06-26 | Matsushita Electric Ind Co Ltd | Energy storage device |
| CN1948746A (en) * | 2006-10-17 | 2007-04-18 | 刘骁 | Vertical full magnetic suspension wind force power generator |
| CN101420150A (en) * | 2008-11-28 | 2009-04-29 | 东南大学 | Energy accumulation device for fly wheel |
| CN201546904U (en) * | 2009-11-06 | 2010-08-11 | 李国宏 | Permanent magnetic floating vertical axis wind driven generator |
| CN102082483A (en) * | 2011-02-16 | 2011-06-01 | 东南大学 | Flywheel energy storing device with permanent magnet bearing and thrust bearing |
| CN103335021A (en) * | 2013-07-08 | 2013-10-02 | 北京飞轮储能柔性研究所 | Combination bearing of flywheel battery magnetic suspension and passive dynamic pressure liquid floated damping |
| CN203362830U (en) * | 2013-07-18 | 2013-12-25 | 上海博红科工贸有限公司 | Axial single-direction thrust permanent magnetic bearing |
| CN203655898U (en) * | 2014-01-14 | 2014-06-18 | 北京良明同创水处理设备开发中心 | Magnetic levitation force suspension bearing unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017072251A (en) * | 2015-10-08 | 2017-04-13 | エスカエフ・マニュティック・メシャトロニク | Rotary machine having magnetic and mechanical bearings |
| CN107226220A (en) * | 2017-05-09 | 2017-10-03 | 哈尔滨工业大学 | Magnetic suspension support meanss for the stable rotation of satellite load |
| CN107226220B (en) * | 2017-05-09 | 2019-09-17 | 哈尔滨工业大学 | Stablize the magnetic suspension support device of rotation for satellite load |
| CN108331836A (en) * | 2018-01-23 | 2018-07-27 | 哈尔滨工程大学 | A kind of magnetic suspension separation transmission shaft structure and vertical axis aerogenerator group |
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Application publication date: 20140514 |