CN101539166B - Magnetic suspension bearing - Google Patents
Magnetic suspension bearing Download PDFInfo
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- CN101539166B CN101539166B CN2009100111639A CN200910011163A CN101539166B CN 101539166 B CN101539166 B CN 101539166B CN 2009100111639 A CN2009100111639 A CN 2009100111639A CN 200910011163 A CN200910011163 A CN 200910011163A CN 101539166 B CN101539166 B CN 101539166B
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- magnet
- magnetic
- suspension bearing
- magnetic suspension
- inner magnet
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Abstract
The invention relates to a magnetic suspension bearing which has a structure that a vacuum part is positioned between an outer magnet and an inner magnet, both end parts of the vacuum part are provided with sealing members or the outer magnet and the inner magnet are arranged in a sealing shell, and the sealing shell is provided with an inert gas inlet and an inert gas outlet. The magnetic suspension bearing utilizes a vacuum or gas temperature reduction way to solve the problem that the outer magnet and the inner magnet are demagnetized due to temperature rising caused in such a way that the magnetic suspension bearing rotates at high speed for a long time; besides, a concave-convex structure adopted between the outer magnet and the inner magnet can ensure the axial and radial stability between the outer magnet and the inner magnet.
Description
Technical field:
The present invention relates to a kind of magnetic suspension bearing.
Background technique:
Magnetic suspension bearing is a kind of non-contact type bearing, so, there are not aspect problems such as wearing and tearing and surface friction drag are little between the parts of two relative movement in this kind bearing, make this kind bearing can support the axle of high speed rotating, can reduce noise and operating cost again.For the structure of magnetic suspension bearing, Chinese patent 1177066A number disclosed name is called " magnetic suspension bearing " and gives a kind of scheme that proposes.This bearing is become by inside and outside annular group of magnets, and two blocks of ring magnets are to utilize multistage magnetizing to make it have row to tear power open and form suspension.Because this magnetic suspension bearing is to utilize inside and outside annular magnet to repel the radial force that is produced mutually to force its suspension, yet, because bearing is the parts that are used to support rotatingshaft, and this kind bearing is at the axial repulsive force that overload protection axially is not set, and rotatingshaft also can produce axial eccentric force simultaneously in drive load rotating process together, so, use this bearing easily to cause rotatingshaft axial dipole field, and rotatingshaft axial dipole field can influence the bearing normal operation; In addition, because magnet will produce demagnetization under 150 ℃ environment, though and the inside and outside annular magnet of this kind bearing is in contactless state, but when its high speed rotating, can cause between the two air to be subjected to the friction of inside and outside annular magnet and heat up, so,, also can shorten because of demagnetization causes its working life even if this kind bearing can normally use.
The name of Chinese patent 101242128 bulletins is called " permanent magnetic body self-induction magnetic suspending power generation device " proposes to make the magnetic suspension bearing running under vacuum state technology enlightenment.This electricity generating device comprises a vacuum vessel, and at vacuum vessel built-in motor and generator, and the flywheel that is driven by axle, and the two ends of this axle limit by magnetic suspension bearing, and its meaning is to want to utilize vacuum to reduce the surface friction drag of each parts in running.Though the magnetic suspension bearing in this electricity generating device is to work under vacuum state, can solve itself and air friction and produce the high temperature demagnetization, but, because this electricity generating device all is placed on all parts in the vacuum vessel, cause the volume of vacuum vessel bigger, and the special material that need have performances such as withstand voltage and secluding air is made, thereby causes the raising of fabricating cost; In addition, magnetic suspension bearing in this electricity generating device is to rely on the permanent magnet that is installed in a two ends to force axle suspension floating by attraction or repulsive force, and this gravity that makes the floating mode of axle suspension need permanent magnet to overcome axle on the one hand and be installed in the parts such as flywheel on the axle, so, need permanent magnet to provide bigger attraction or repulsive force for axle, and the increase of permanent magnet attraction or repulsive force can cause the raising of this bearing fabricating cost, on the other hand, because of the magnetic suspension bearing of this kind structure is to be made of the permanent magnet that is installed in a two ends, cause this not export rotatory force in axial direction, so this bearing using scope has certain limitation.
Summary of the invention:
Task of the present invention provides a kind of magnetic suspension bearing that utilizes vacuum or gas temperature reduction way to solve permanent magnet demagnetization problem.
Another task of the present invention provides a kind ofly to be utilized the mode that can produce radial and axial repulsive force between inner magnet and the outer magnet to solve because of rotatingshaft skew to make can not the run well magnetic suspension bearing of problem of bearing.
Magnetic suspension bearing proposed by the invention comprises inner magnet and relies on magnetic force to be coated on the outer magnet of this inner magnet outer surface in the non-contact mode, and the magnetic isolation board that is installed in outer magnet and inner magnet periphery, be vacuum between described outer magnet and the inner magnet, and being provided with Sealing or described outer magnet and inner magnet in two ends of vacuum is installed in the seal casinghousing, and this housing is provided with inert gas entrance and outlet, described outer magnet or inner magnet are provided with the passage that extends inwardly to vacuum from outer surface, and in the outer end of this passage valve are installed.Because between outer magnet and the inner magnet is in the contactless state relative movement, and both are in vacuum state, so, even when long-time high speed rotating, can not change the temperature of periphery yet; And outer magnet and inner magnet are in the atmosphere that the circuit cooled gas coated the same its peripheral temperature that also can not change with vacuum state.
The face relative with inner magnet of outer magnet is provided with the outer magnetic recess that caves inward or to the outer magnetic protuberance of outer lug, inner magnet be provided with outer magnet on outer magnetic recess or position interior magnetic protuberance or the interior magnetic recess relative of outer magnetic protuberance with shape.Adopt this kind structure can make both all can be subjected to the repulsive force of radial and axial both direction between outer magnet and the inner magnet, make this bearing can overcome rotatingshaft effectively its axial and radial disbalance power that applies.
Described outer magnet is to be that the first outer shroud magnet and the cross section of rectangle is that the second L shaped outer shroud magnet constitutes by cross section, and makes the central region after the first outer shroud magnet and the butt joint of the second outer shroud magnet can form the outer magnetic recess that cross section is a rectangle.
Described inner magnet be by cross section be rectangle first in ring magnet and cross section be that the ring magnet constitutes in L shaped second, and make in first that the central region after the butt joint of ring magnet can form the interior magnetic recess that cross section is a rectangle in the ring magnet and second.
Also be provided with rectangle or trapezoidal outer magnetic recess on the face relative that the described first outer shroud magnet and second outer shroud magnet splicing back forms with inner magnet, in first in the ring magnet and second the formed face in ring magnet splicing back be provided with and can extend in the outer magnetic recess and shape interior magnetic protuberance akin with it.
Be provided with link between described outer magnet and the magnetic isolation board.
Magnetic suspension bearing proposed by the invention solves the problem that bearing makes outer magnet and inner magnet temperature demagnetize because of rising at long-time high speed rotating because of having adopted vacuum or gas temperature reduction way, and vacuumizes or how many gas coolings can't improve and make and operating cost; In addition, the concaveconvex structure that adopts between outer magnet and the inner magnet, this structure can guarantee between the two axially and be radially stable, even if the rotatingshaft that it supported is being subjected to axially or during radially eccentric force, do not run well because of the effect of magnetic repulsion also can not influence this magnetic suspension bearing.
Description of drawings:
Accompanying drawing 1 is first embodiment's of magnetic suspension bearing an outward appearance part-structure schematic representation;
Accompanying drawing 2 is outward appearance part-structure schematic representation of second embodiment of magnetic suspension bearing.
Embodiment:
Referring to Fig. 1, this figure provides an embodiment's of magnetic suspension bearing proposed by the invention overall appearance structure.This magnetic suspension bearing comprises inner magnet 1, outer magnet 2, magnetic isolation board 3 and Sealing 4.Wherein, inner magnet 1 is the cylinder that a middle part axially is provided with through hole, rotatingshaft 5 can extend in the through hole, is provided with the interior magnetic protuberance 11 of an annular in the central region of inner magnet 1 outer surface, and inner magnet 1 axial two ends all are equipped with magnetic isolation board 3 with a side that is connected with rotatingshaft 5.Outer magnet 2 is to be that the first outer shroud magnet 21 and the cross section of rectangle is that the second L shaped outer shroud magnet 22 constitutes by cross section, central region after the first outer shroud magnet 21 and 22 butt joints of the second outer shroud magnet can form the outer magnetic recess 23 that cross section is a rectangle, and this outer magnetic recess 23 can allow interior magnetic protuberance 11 to insert and keep at a certain distance away, outer magnet 2 is provided with the passage 24 that extends internally from outer surface, and valve (not providing among the figure) is installed in the outer end of this passage 24, and be provided with magnetic isolation board 3 at the axial two ends and the outer surface of outer magnet 2, and between magnetic isolation board 3 and outer magnet 2 link 6 is installed, it is convenient installation of structure of the L shaped second outer shroud magnet 22 that outer magnet 2 adopts the first outer shroud magnets 21 and cross section.Inner magnet 1 is set to the homopolarity magnet with outer magnet 2 relative face polarity, makes to repel mutually between the two and have certain span.
When using this magnetic suspension bearing, at first the equipment with intake-gas extend into the air that aspirates in passage 24 oral areas or the passage 24 between outer magnet 2 and inner magnet 1 interface, allows it form vacuum, normally uses this bearing behind the throttle down again.
In the magnetic suspension bearing that present embodiment provides, the structure of outer magnet 2 and inner magnet 1 also can adopt the mode of exchange, promptly be provided with outer magnetic protuberance to outer lug in the central region of outer magnet 2, and inner magnet 1 be provided with outer magnet 2 on the position interior magnetic recess relative of outer magnetic protuberance with shape, and inner magnet 1 be by cross section be rectangle first in ring magnet and cross section be that the ring magnet constitutes in L shaped second, and make the central region after the ring magnet docks in the ring magnet and second in first can form the interior magnetic recess that cross section is a rectangle (do not provide in this structural drawing, but those skilled in the art can implement fully according to Fig. 1).
Referring to Fig. 2, this figure provides another embodiment's of magnetic suspension bearing proposed by the invention surface structure.Outer magnet 2 among this embodiment is identical with embodiment 1 with the structure of inner magnet 1, different is that outer magnet 2 and inner magnet 1 are installed in the seal casinghousing 7, sealing housing 7 is cuboids, is provided with inert gas entrance (not demonstrating among the figure) and outlet 71 thereon.Seal casinghousing 7 can also adopt the geometrical body of cylindrical housings or other shape.
In the given in the present embodiment magnetic suspension bearing, adopt the inert gas that flows to cool off outer magnet 2 and inner magnet 1, so can omit above-mentioned Sealing 4.
Claims (5)
1. magnetic suspension bearing, this bearing comprises inner magnet and relies on magnetic force to be coated on the outer magnet of this inner magnet outer surface in the non-contact mode, and the magnetic isolation board that is installed in outer magnet and inner magnet periphery, be vacuum between described outer magnet and the inner magnet, and be provided with Sealing or described outer magnet and inner magnet in two ends of vacuum and be installed in the seal casinghousing, and this housing is provided with inert gas entrance and outlet; It is characterized in that: described outer magnet or inner magnet are provided with the passage that extends inwardly to vacuum from outer surface, and in the outer end of this passage valve are installed.
2. magnetic suspension bearing according to claim 1, it is characterized in that: the face relative with inner magnet of outer magnet is provided with the outer magnetic recess that caves inward or to the outer magnetic protuberance of outer lug, inner magnet be provided with outer magnet on outer magnetic recess or position interior magnetic protuberance or the interior magnetic recess relative of outer magnetic protuberance with shape.
3. magnetic suspension bearing according to claim 2, it is characterized in that: described outer magnet is to be that the first outer shroud magnet and the cross section of rectangle is that the second L shaped outer shroud magnet constitutes by cross section, and makes the central region after the first outer shroud magnet and the butt joint of the second outer shroud magnet can form the outer magnetic recess that cross section is a rectangle.
4. magnetic suspension bearing according to claim 2, it is characterized in that: described inner magnet be by cross section be rectangle first in ring magnet and cross section be that the ring magnet constitutes in L shaped second, and make in first that the central region after the butt joint of ring magnet can form the interior magnetic recess that cross section is a rectangle in the ring magnet and second.
5. magnetic suspension bearing according to claim 2 is characterized in that: be provided with link between described outer magnet and the magnetic isolation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100111639A CN101539166B (en) | 2009-04-16 | 2009-04-16 | Magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100111639A CN101539166B (en) | 2009-04-16 | 2009-04-16 | Magnetic suspension bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101539166A CN101539166A (en) | 2009-09-23 |
| CN101539166B true CN101539166B (en) | 2010-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100111639A Expired - Fee Related CN101539166B (en) | 2009-04-16 | 2009-04-16 | Magnetic suspension bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN101539166B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185073B (en) * | 2012-01-02 | 2017-08-25 | 张玉宝 | A kind of magnetic suspension bearing and the method for improving magnetic suspension bearing magnetic energy utilization |
| CN103244557A (en) * | 2012-02-08 | 2013-08-14 | 张玉宝 | Radial-axial magnetic bearing |
| CN103244555A (en) * | 2012-02-11 | 2013-08-14 | 张玉宝 | Radial-axial magnetic bearing |
| CN102644662B (en) * | 2012-05-03 | 2014-12-03 | 洛阳润环电机轴承有限公司 | Magnetic suspension bearing |
| CN103671522B (en) * | 2012-09-12 | 2018-05-15 | 张玉宝 | A kind of footpath axial magnetic suspension bearing |
| CN104179801A (en) * | 2013-05-26 | 2014-12-03 | 张玉宝 | Radial-axial magnetic suspension composite unit |
| CN104235182B (en) * | 2013-06-21 | 2018-01-19 | 张玉宝 | A kind of magnetic bearing |
| CN107570104B (en) * | 2017-11-09 | 2023-11-10 | 威海化工机械有限公司 | Reaction kettle with non-contact anti-swing support |
| CN111772360B (en) * | 2020-08-10 | 2021-12-07 | 江西光正金属设备集团有限公司 | Mute rotary bookshelf based on magnetic suspension |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163267Y (en) * | 1993-08-25 | 1994-04-27 | 陶一飞 | Inner bearing ring split magneto floating bearing |
| CN2235042Y (en) * | 1995-03-13 | 1996-09-11 | 赵家文 | Permanent magnet magnetic bearing |
| KR20010081788A (en) * | 2000-02-18 | 2001-08-29 | 박춘길 | Noncontact supporting method for rotary intersecting bodies and the bearing device |
| CN2733731Y (en) * | 2004-09-28 | 2005-10-12 | 冯学荣 | Magnetic transmission device with bearing under protection |
-
2009
- 2009-04-16 CN CN2009100111639A patent/CN101539166B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163267Y (en) * | 1993-08-25 | 1994-04-27 | 陶一飞 | Inner bearing ring split magneto floating bearing |
| CN2235042Y (en) * | 1995-03-13 | 1996-09-11 | 赵家文 | Permanent magnet magnetic bearing |
| KR20010081788A (en) * | 2000-02-18 | 2001-08-29 | 박춘길 | Noncontact supporting method for rotary intersecting bodies and the bearing device |
| CN2733731Y (en) * | 2004-09-28 | 2005-10-12 | 冯学荣 | Magnetic transmission device with bearing under protection |
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| Publication number | Publication date |
|---|---|
| CN101539166A (en) | 2009-09-23 |
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Granted publication date: 20101222 Termination date: 20110416 |