CN102644662B - Magnetic suspension bearing - Google Patents
Magnetic suspension bearing Download PDFInfo
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- CN102644662B CN102644662B CN201210134036.XA CN201210134036A CN102644662B CN 102644662 B CN102644662 B CN 102644662B CN 201210134036 A CN201210134036 A CN 201210134036A CN 102644662 B CN102644662 B CN 102644662B
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- permanent magnet
- annular
- bearing
- magnetic suspension
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Abstract
The invention discloses a magnetic suspension bearing. A permanent magnet annular assembly which is formed by axially stacking three annular permanent magnets magnetized by inside and outside unipolar radiation orientation and has the middle provided with an introverted type radial-opening annular groove is fixed on an inner wall of an outer ring of the bearing, and then a side-direction structure which is complementary in a convex-concave mode and is arranged in a crossed mode is formed by radial and axial working air gaps of the introverted type radial-opening annular groove and a permanent magnet annular assembly, wherein the permanent magnet annular assembly is fixed on the outer side of an inner ring of the bearing, is formed by axially stacking three annular permanent magnets magnetized by inside and outside unipolar radiation orientation and has the middle provided with an introverted type radial-opening annular groove. Magnetic conducting materials are covered on the sides of non-working air gaps of each permanent magnet annular assembly. In each permanent magnet annular assembly, axially adjacent annular permanent magnets maintain opposite magnetic field polarities, and between the two permanent magnet annular assemblies on the inner ring and the outer ring, the annular permanent magnets which are opposite to each other in the radial direction through the air gaps maintain a repelling state of magnetic force.
Description
Technical field:
The present invention relates to magnetic suspension bearing, relate in particular to the magnetic suspension bearing of full permanent magnetism repulsion type, more particularly: be the full permanent magnetism repulsion type of a kind of integrated type self-stabilization magnetic suspension bearing.
Background technique:
The permanent magnetism repulsion type magnetic suspension bearing of prior art belongs to single side type magnetic bearing structure more, easily causes circular runout while causing the rotor shaft of magnetic suspension bearing application apparatus to stand axial force, thereby has reduced the safe operation of magnetic suspension rotor support system; Simultaneously, because single side type magnetic suspension bearing belongs to Split type structure, can be to the packing of magnetic suspension bearing product, deposit, transport and bring inconvenience, if but can invent the full permanent magnetism repulsion type of a kind of integrated type double-flanged end magnetic suspension bearing, will avoid above-mentioned unfavorable factor, thereby applying of magnetic suspension bearing brought beneficial effect and played positive impetus to the upgrading of high-end energy saving environmental protection products such as manyly pursuing at a high speed, accurate, quiet.
Summary of the invention:
Object of the present invention, will provide the magnetic suspension bearing of the full permanent magnetism repulsion type of a kind of integrated type double-flanged end exactly, and concrete technological scheme is as follows:
1, a kind of magnetic suspension bearing, it is that after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of inside and outside unipolarity by three, the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion that is formed in is fixed on the inwall of bearing outer ring, then, the axial working gas gap in footpath by described internally-oriented radial port annular groove be fixed on one of bearing inner race outside and by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, be axially formed in the permanent magnet annular assembly with radial ringed lug boss on intermediate portion after stack and form convex-concave complementation, side direction structure arranged in a crossed manner, the non-working-gap side of described each permanent magnet annular assembly is all covered by permeability magnetic material, in the middle of each described permanent magnet annular assembly, between each axial adjacent annular permanent magnet, keeps the contrary each other of magnetic field polarity, between two permanent magnet annular assemblies on described inside and outside circle, all by all remaining on the state that magnetic force repels mutually between the radially relative annular permanent magnet of air gap, the monnolithic case of described each permanent magnet annular assembly shows to have axial symmetry.
In the middle of permanent magnet annular assembly on bearing outer ring of the present invention, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, can adopt inner " horn mouth " annular permanent magnet of boring inclined-plane with part, and each is positioned at axial end one side of magnetic suspension bearing with the maximum material removal side of partly boring " horn mouth " annular permanent magnet on inclined-plane; The cone inclined-plane of described " horn mouth " annular permanent magnet can not covered by permeability magnetic material.
In the middle of permanent magnet annular assembly on bearing outer ring of the present invention, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, can adopt outside " hollow shape truncated cone shape " annular permanent magnet of boring inclined-plane with part, and each is positioned at axial end one side of magnetic suspension bearing with the maximum material removal side of partly boring " hollow shape truncated cone shape " annular permanent magnet on inclined-plane; The cone inclined-plane of described " hollow shape truncated cone shape " annular permanent magnet can not covered by permeability magnetic material yet.
In the middle of permanent magnet annular assembly on bearing outer ring of the present invention, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, adopt inner " horn mouth " annular permanent magnet of boring inclined-plane with part, simultaneously, in the middle of permanent magnet annular assembly on described bearing inner race, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, adopt outside " hollow shape truncated cone shape " annular permanent magnet of boring inclined-plane with part, and these should be positioned at axial end one side of magnetic suspension bearing with the maximum material removal side of partly boring the annular permanent magnet on inclined-plane.
Comprehensively above-mentioned, in the middle of arbitrary magnetic suspension bearing of enumerating in the present invention, the outside being formed on described bearing inner race intermediate portion on intermediate portion with the annular permanent magnet of radial ringed lug boss is provided with ferromagnetic body or the carbon fiber composite strengthening layer that prevents centrifugal force stripping damage, and described carbon fiber composite strengthening layer also can extend to two of permanent magnet annular assembly on bearing inner race radially reduction portions; The axial thickness of two permanent magnet annular assemblies on the inside and outside circle of described bearing can equate also can be unequal.
2, a kind of magnetic suspension bearing, it is after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, is formed in the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion and is fixed on the inwall of bearing outer ring; Then, the axial working gas gap in footpath by internally-oriented radial port annular groove be fixed on the quilt in bearing inner race outside inside and outside the radially oriented annular permanent magnet magnetizing of unipolarity form the side direction structure that convex-concave is intersected; Between the annular permanent magnet of the internally-oriented radial port annular groove bottom on the annular permanent magnet on described bearing inner race and described bearing outer ring, remain on the state that magnetic force repels mutually, in the middle of described permanent magnet annular assembly, the flux polarity between each axial adjacent annular permanent magnet is contrary each other; Annular permanent magnet on described bearing inner race be also provided with ferromagnetic body or carbon fiber composite strengthening layer.
In the middle of arbitrary magnetic suspension bearing of the present invention, between permanent magnet annular assembly on the inside and outside circle of described bearing or between permanent magnet annular assembly and annular permanent magnet, can realize mutual transposition, the carbon fiber composite strengthening layer after transposition can be adjusted to the outside of two major diameter annular permanent magnets in the middle of permanent magnet annular assembly on bearing inner race mutually; The axial thickness of two permanent magnet annular assemblies on the inside and outside circle of described bearing can equate also can be unequal.
The radially oriented annular permanent magnet magnetizing of unipolarity of the present invention refers to: in the middle of an annular permanent magnet, the outside of whole annular permanent magnet belongs to a magnetic pole together, and the inwall of whole annular permanent magnet belongs to the situation of another magnetic pole.
Comprehensively above-mentioned, the full permanent magnetism repulsion type of integrated type of the present invention magnetic suspension bearing, with respect to the single side type magnetic suspension bearing of prior art, has following beneficial effect:
While 1, having avoided magnetic suspension rotor axostylus axostyle to stand axial force, cause circular runout, thereby guaranteed magnetic suspension rotor support system reliability of operation.
2, the full permanent magnetism repulsion type of integrated type magnetic suspension bearing, meets Machine Design personnel's thinking habit, and can meet and same model mechanical bearing between exchange use.
3, to have product attractive in appearance for the full permanent magnetism repulsion type of integrated type magnetic suspension bearing, the feature of compact structure.
Embodiment:
With concrete mode of execution, magnetic suspension bearing of the present invention is described in further detail below:
1, a magnetic suspension bearing, it is that after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of inside and outside unipolarity by three, the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion that is formed in is fixed on the inwall of bearing outer ring; Then, the axial working gas gap in footpath by internally-oriented radial port annular groove is axially formed on intermediate portion with complementary, the arranged in a crossed manner side direction structure of the permanent magnet annular module composition convex-concave of radial ringed lug boss after stack by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts with one that is fixed on bearing inner race outside.Bearing enclose and bearing (ball) cover that the non-working-gap side of described each permanent magnet annular assembly is all made by permeability magnetic material cover; In the middle of each described permanent magnet annular assembly, between each axial adjacent annular permanent magnet, keep the contrary each other of magnetic field polarity; Between two permanent magnet annular assemblies of described Internal and external cycle, all by all remaining on the state that magnetic force repels mutually between the radially relative annular permanent magnet of air gap; The monnolithic case of described each permanent magnet annular assembly all shows axial symmetry.
2, a kind of magnetic suspension bearing, it is after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, is formed in the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion and is fixed on the inwall of bearing outer ring; Then, the axial working gas gap in footpath by internally-oriented radial port annular groove is axially formed on intermediate portion with complementary, the arranged in a crossed manner side direction structure of the permanent magnet annular module composition convex-concave of radial ringed lug boss after stack by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts with one that is fixed on bearing inner race outside.Bearing enclose and bearing (ball) cover that the non-working-gap side of described each permanent magnet annular assembly is all made by permeability magnetic material cover; In the middle of each described permanent magnet annular assembly, between each axial adjacent annular permanent magnet, keep the contrary each other of magnetic field polarity; Between two permanent magnet annular assemblies of described Internal and external cycle, all by all remaining on the state that magnetic force repels mutually between the radially relative annular permanent magnet of air gap; The monnolithic case of described each permanent magnet annular assembly all shows axial symmetry; In the middle of permanent magnet annular assembly on described bearing outer ring, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, adopt inner with part bore inclined-plane " horn mouth " annular permanent magnet and, and each maximum material removal side of boring " horn mouth " annular permanent magnet on inclined-plane with part is positioned at axial end one side of magnetic suspension bearing; The cone inclined-plane of described " horn mouth " annular permanent magnet is not covered by permeability magnetic material.
3, a kind of magnetic suspension bearing, it is after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, is formed in the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion and is fixed on the inwall of bearing outer ring; Then, the axial working gas gap in footpath by internally-oriented radial port annular groove is axially formed on intermediate portion with complementary, the arranged in a crossed manner side direction structure of the permanent magnet annular module composition convex-concave of radial ringed lug boss after stack by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts with one that is fixed on bearing inner race outside.Bearing enclose and bearing (ball) cover that the non-working-gap side of described each permanent magnet annular assembly is all made by permeability magnetic material cover; In the middle of each described permanent magnet annular assembly, between each axial adjacent annular permanent magnet, keep the contrary each other of magnetic field polarity; Between two permanent magnet annular assemblies of described Internal and external cycle, all by all remaining on the state that magnetic force repels mutually between the radially relative annular permanent magnet of air gap; The monnolithic case of described each permanent magnet annular assembly all shows axial symmetry; The outside being formed on described bearing inner race intermediate portion on intermediate portion with the annular permanent magnet of radial ringed lug boss is provided with ferromagnetic body or the carbon fiber composite strengthening layer that prevents centrifugal force stripping damage.
6, a kind of magnetic suspension bearing, it is after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, is formed in the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion and is fixed on the inwall of bearing outer ring; Then, the axial working gas gap in footpath by internally-oriented radial port annular groove be fixed on the quilt in bearing inner race outside inside and outside the radially oriented annular permanent magnet magnetizing of unipolarity form the side direction structure that convex-concave is intersected; Between the annular permanent magnet of the internally-oriented radial port annular groove bottom on the annular permanent magnet on described bearing inner race and described bearing outer ring, remain on the state that magnetic force repels mutually.In the middle of described permanent magnet annular assembly, the flux polarity between each axial adjacent annular permanent magnet is contrary each other; Annular permanent magnet on described bearing inner race be also provided with ferromagnetic body or carbon fiber composite strengthening layer.
Claims (7)
1. a magnetic suspension bearing, it is after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, is formed in the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion and is fixed on the inwall of bearing outer ring; Then, the axial working gas gap in footpath by internally-oriented radial port annular groove be fixed on one of bearing inner race outside and be axially formed in after stack on intermediate portion with complementary, the arranged in a crossed manner side direction structure of the permanent magnet annular module composition convex-concave of radial ringed lug boss by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, the non-working-gap side of described each permanent magnet annular assembly is all covered by permeability magnetic material; In the middle of each described permanent magnet annular assembly, between each axial adjacent annular permanent magnet, keep the contrary each other of magnetic field polarity; Between two permanent magnet annular assemblies of described Internal and external cycle, all by all remaining on the state that magnetic force repels mutually between the radially relative annular permanent magnet of air gap; The monnolithic case of described each permanent magnet annular assembly shows axial symmetry; The outside being formed on described bearing inner race intermediate portion on intermediate portion with the annular permanent magnet of radial ringed lug boss is provided with ferromagnetic body or carbon fiber composite strengthening layer.
2. according to magnetic suspension bearing claimed in claim 1, it is characterized in that: in the middle of the permanent magnet annular assembly on described bearing outer ring, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, adopt inner " horn mouth " annular permanent magnet of boring inclined-plane with part, and each is positioned at axial end one side of magnetic suspension bearing with the maximum material removal side of partly boring " horn mouth " annular permanent magnet on inclined-plane; The cone inclined-plane of described " horn mouth " annular permanent magnet is not covered by permeability magnetic material.
3. according to magnetic suspension bearing claimed in claim 1, it is characterized in that: in the middle of the permanent magnet annular assembly on described bearing inner race, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, adopt outside " hollow shape truncated cone shape " annular permanent magnet of boring inclined-plane with part, and each is positioned at axial end one side of magnetic suspension bearing with the maximum material removal side of partly boring " hollow shape truncated cone shape " annular permanent magnet on inclined-plane; The cone inclined-plane of described " hollow shape truncated cone shape " annular permanent magnet is not covered by permeability magnetic material.
4. according to magnetic suspension bearing claimed in claim 1, it is characterized in that: in the middle of the permanent magnet annular assembly on described bearing outer ring, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, adopt inner " horn mouth " annular permanent magnet of boring inclined-plane with part, simultaneously, in the middle of permanent magnet annular assembly on described bearing inner race, be positioned at the annular permanent magnet on magnetic suspension bearing axial end position, adopt outside " hollow shape truncated cone shape " annular permanent magnet of boring inclined-plane with part, and these should be positioned at axial end one side of magnetic suspension bearing with the maximum material removal side of partly boring the annular permanent magnet on inclined-plane.
5. a magnetic suspension bearing, it is after one is axially superposeed by the radially oriented annular permanent magnet magnetizing of unipolarity inside and outside three quilts, is formed in the permanent magnet annular assembly with internally-oriented radial port annular groove on intermediate portion and is fixed on the inwall of bearing outer ring; Then, the axial working gas gap in footpath by internally-oriented radial port annular groove be fixed on the quilt in bearing inner race outside inside and outside the radially oriented annular permanent magnet magnetizing of unipolarity form the side direction structure that convex-concave is intersected; Between the annular permanent magnet of the internally-oriented radial port annular groove bottom on the annular permanent magnet on described bearing inner race and described bearing outer ring, remain on the state that magnetic force repels mutually; In the middle of described permanent magnet annular assembly, the flux polarity between each axial adjacent annular permanent magnet is contrary each other; The outside of the annular permanent magnet on described bearing inner race is also provided with ferromagnetic body or carbon fiber composite strengthening layer.
6. according to the arbitrary magnetic suspension bearing described in claim 1-5, also be: between the permanent magnet annular assembly on the inside and outside circle of described bearing or annular permanent magnet, all can realize mutual transposition, but after transposition, it is constant that carbon fiber composite strengthening layer is arranged on the principle in permanent magnet annular assembly outside on bearing inner race mutually.
7. according to the arbitrary magnetic suspension bearing described in claim 1-5, be also: the axial thickness between two permanent magnet annular assemblies on the inside and outside circle of described bearing is unequal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210134036.XA CN102644662B (en) | 2012-05-03 | 2012-05-03 | Magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210134036.XA CN102644662B (en) | 2012-05-03 | 2012-05-03 | Magnetic suspension bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102644662A CN102644662A (en) | 2012-08-22 |
| CN102644662B true CN102644662B (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210134036.XA Expired - Fee Related CN102644662B (en) | 2012-05-03 | 2012-05-03 | Magnetic suspension bearing |
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| Country | Link |
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| CN (1) | CN102644662B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016524A (en) * | 2012-12-13 | 2013-04-03 | 洛阳润环电机轴承有限公司 | Radial and axial magnetic levitation bearing for replacing centripetal thrust |
| CN105352466B (en) * | 2015-12-14 | 2018-03-20 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of device for detecting axial displacement, method and magnetic suspension bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642381A1 (en) * | 1986-12-11 | 1988-06-23 | Tokuzo Hirose | Rotating gripper for a sewing machine |
| CN2764994Y (en) * | 2005-01-20 | 2006-03-15 | 曲洪源 | Permanent-magnet magnetic suspension bearing |
| CN101000070A (en) * | 2006-11-02 | 2007-07-18 | 刘新广 | Permanent magnetism and turbine composite bearing |
| CN101539166A (en) * | 2009-04-16 | 2009-09-23 | 王铮 | Magnetic suspension bearing |
| CN201730963U (en) * | 2010-08-17 | 2011-02-02 | 刘新广 | Permanent magnet electric suspension bearing |
| CN202001498U (en) * | 2011-01-11 | 2011-10-05 | 张平 | Permanent magnetic suspension bearing and mounting structure thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458199C (en) * | 2007-07-13 | 2009-02-04 | 南京航空航天大学 | Permanent magnet biased axial magnetic suspension bearing |
| DE102010004904A1 (en) * | 2010-01-19 | 2011-09-15 | Schaeffler Technologies Gmbh & Co. Kg | Permanent magnetic bearing for supporting shaft at housing, has auxiliary bearing provided in superconductor made of superconducting material, and permanent magnet whose magnetic field is formed in region of superconductor |
| CN102042326B (en) * | 2010-11-10 | 2012-07-25 | 中国科学院电工研究所 | Passive magnetic bearing for low-speed flywheel energy storage system |
-
2012
- 2012-05-03 CN CN201210134036.XA patent/CN102644662B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642381A1 (en) * | 1986-12-11 | 1988-06-23 | Tokuzo Hirose | Rotating gripper for a sewing machine |
| CN2764994Y (en) * | 2005-01-20 | 2006-03-15 | 曲洪源 | Permanent-magnet magnetic suspension bearing |
| CN101000070A (en) * | 2006-11-02 | 2007-07-18 | 刘新广 | Permanent magnetism and turbine composite bearing |
| CN101539166A (en) * | 2009-04-16 | 2009-09-23 | 王铮 | Magnetic suspension bearing |
| CN201730963U (en) * | 2010-08-17 | 2011-02-02 | 刘新广 | Permanent magnet electric suspension bearing |
| CN202001498U (en) * | 2011-01-11 | 2011-10-05 | 张平 | Permanent magnetic suspension bearing and mounting structure thereof |
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| Publication number | Publication date |
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| CN102644662A (en) | 2012-08-22 |
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| C14 | Grant of patent or utility model | ||
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Owner name: LUOYANG RUNHUAN BEARING TECHNOLOGY CO., LTD. Free format text: FORMER NAME: LUOYANG RUNHUAN MOTOR BEARING CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 471003, No. 22 Binhe Road, hi tech Zone, Henan, Luoyang, 1 Patentee after: LUOYANG RUNHUAN BEARING TECHNOLOGY CO., LTD. Patentee after: Zhang Yubao Address before: 471003 Luoyang run ring motor bearing Co., Ltd., No. 22 Binhe Road, Luoyang hi tech Zone, Henan, China Patentee before: Luoyang Run Huan motor bearings Co., Ltd Patentee before: Zhang Yubao |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20210503 |