CN102767563A - Rolling auxiliary bearing and auxiliary bearing system - Google Patents
Rolling auxiliary bearing and auxiliary bearing system Download PDFInfo
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- CN102767563A CN102767563A CN201210240561XA CN201210240561A CN102767563A CN 102767563 A CN102767563 A CN 102767563A CN 201210240561X A CN201210240561X A CN 201210240561XA CN 201210240561 A CN201210240561 A CN 201210240561A CN 102767563 A CN102767563 A CN 102767563A
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- rolling
- auxiliary bearing
- bearing
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Abstract
The invention relates to an auxiliary bearing used for a magnetic bearing system, in particular to a rolling auxiliary bearing used for a magnetic bearing system without a retainer angularly contacting with a ceramic ball. The rolling auxiliary bearing comprises an inner ring, an outer ring and a rolling body, wherein the rolling auxiliary bearing has no retainer, the rolling body is a ceramic ball. The auxiliary bearing system comprises a rotor, a base, an end cover and a pair of rolling auxiliary bearings, the rolling auxiliary bearings are a pair of angular contact ball bearings and arranged in the base in a face-to-face manner, the outer ring is compressed by the end cover, and the rolling auxiliary bearing has no retainer. By adopting the technical scheme, the auxiliary bearing has the characteristics of having higher rotating speed limit, and being suitable for high rotating speed of an active magnetic bearing.
Description
Technical field
The present invention relates to a kind of auxiliary bearing that is used for magnetic bearing system, relate in particular to a kind of angle contacting ceramic ball rolling auxiliary bearing and auxiliary bearing system that is used for magnetic bearing system.
Background technique
The active magnetic bearings system suspends rotor through electromagnetic force, has advantages such as not having friction, rotating speed height, rotor mode easy to control, and the advantage that can not be substituted is arranged at some special occasions.Auxiliary bearing is the indispensable constituent element of magnetic bearing system, transship, interim support rotor during the power down accident, assemblies such as protection magnetic bearing stator are also being shut down support rotor under the normal condition such as maintenance simultaneously.
The auxiliary bearing requirement limit speed of active magnetic bearings system is high, intensity is big, and the common Metal Ball bearing that has retainer is difficult to meet the demands.Retainer is a link the weakest in the rolling bearing.Rotor can drive also high-speed rotation of inner ring, rolling element, retainer often at high speed rotating when auxiliary bearing played a role, and retainer often takes the lead in losing efficacy under centrifugal force and rolling element collision effect, and plastic deformation even fracture take place, and auxiliary bearing was lost efficacy; Metal Ball is because density is bigger, and is also bigger to the raceway injury under high rotating speed, and non-refractory, easy to wear.
Summary of the invention
The technical problem that (one) will solve
Technical problem to be solved by this invention is: the present invention provides a kind of no retainer angle contacting ceramic ball rolling auxiliary bearing, can adapt to the high-revolving characteristics of active magnetic bearings system well.
(2) technological scheme
In order to address the above problem, the invention provides a kind of rolling auxiliary bearing, it comprises inside and outside circle and rolling element, wherein, said rolling auxiliary bearing does not have retainer.
Wherein, said rolling element is a ceramic ball.
Wherein, the said rolling auxiliary bearing angle contacting ceramic ball rolling bearing that is a pair of face-to-face installation.
The present invention also provides a kind of auxiliary bearing system; It comprises rotor, pedestal, end cap and a pair of rolling auxiliary bearing; A pair of rolling auxiliary bearing is installed in the pedestal face-to-face, and said rolling auxiliary bearing compresses the outer ring by end cap, and said rolling auxiliary bearing does not have retainer.
Wherein, said rolling element is a ceramic ball.
Wherein, the said rolling auxiliary bearing angle contacting ceramic ball rolling bearing that is a pair of face-to-face installation.
Wherein, said rotor has the shaft shoulder, rotor be provided with back-up ring away from shaft shoulder end, said rolling auxiliary bearing is contained between the said shaft shoulder and the back-up ring.
(3) beneficial effect
Bearing does not have fragile relatively retainer; Rolling element is a ceramic ball, and the wear-resisting while is high temperature resistant, even the phase mutual friction does not influence use yet because there being retainer between the rolling element; Adopt a pair of angular contact bearing to install face-to-face, can make auxiliary bearing bear the thrust load of both direction simultaneously.Task proposed by the invention also can further realize through following technological scheme: but both horizontal positioned was used for vertical magnetic bearing, also can vertically place to be used for horizontal magnetic bearing.
The present invention makes auxiliary bearing have the high rotational speed limit owing to adopt technique scheme, adapts to the high-revolving characteristics of active magnetic bearings.
Description of drawings
Fig. 1 does not have the partial schematic diagram of retainer angle contacting ceramic ball rolling auxiliary bearing for first embodiment of the invention;
Fig. 2 does not have the partial schematic diagram of retainer angle contacting ceramic ball rolling auxiliary bearing for second embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technological scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are not making all other embodiments that obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The rolling auxiliary bearing, it comprises inside and outside circle and rolling element.
Embodiment 1: with reference to Fig. 1.For vertical magnetic bearing, use the angle contacting ceramic ball rolling bearing 1 of a pair of no retainer to be installed in face-to-face in the pedestal 2, bearing 1 is compressed by end cap 3.Rotor 4 be provided with back-up ring 5 away from shaft shoulder end, the shaft shoulder of rotor 4 and back-up ring 5 match and can guarantee that bearing 1 can both play a supportive role to rotor 4 at two axial directions.Because rolling bearing 1 does not contain retainer, ceramic ball is very wear-resisting again, so bearing can reach the high rotational speed limit.
Embodiment 2: with reference to Fig. 2.For horizontal magnetic bearing, use the angle contacting ceramic ball rolling bearing 1 of a pair of no retainer to be installed in face-to-face in the pedestal 2, bearing 1 is compressed by end cap 3.Rotor 4 be provided with back-up ring 5 away from shaft shoulder end, the shaft shoulder of rotor 4 and back-up ring 5 match and can guarantee that bearing 1 can both play a supportive role to rotor 4 at two axial directions.Because rolling bearing 1 does not contain retainer, ceramic ball is very wear-resisting again, so bearing can reach the high rotational speed limit.
Claims (8)
1. rolling auxiliary bearing, it comprises inside and outside circle and rolling element, it is characterized in that, said rolling auxiliary bearing does not have retainer.
2. rolling auxiliary bearing as claimed in claim 1 is characterized in that, said rolling element is a ceramic ball.
3. rolling auxiliary bearing as claimed in claim 2 is characterized in that, the angle contacting ceramic ball rolling bearing that said rolling auxiliary bearing is a pair of face-to-face installation.
4. auxiliary bearing system; It comprises rotor, pedestal, end cap and a pair of rolling auxiliary bearing, and a pair of rolling auxiliary bearing is installed in the pedestal face-to-face, and said rolling auxiliary bearing compresses the outer ring by end cap; It is characterized in that said rolling auxiliary bearing does not have retainer.
5. auxiliary bearing as claimed in claim 4 system is characterized in that said rolling element is a ceramic ball.
6. auxiliary bearing as claimed in claim 4 system is characterized in that said rolling auxiliary bearing is an angle contacting ceramic ball rolling bearing.
7. auxiliary bearing as claimed in claim 4 system is characterized in that said rotor has the shaft shoulder, rotor be provided with back-up ring away from shaft shoulder end, said rolling auxiliary bearing is contained between the said shaft shoulder and the back-up ring.
8. auxiliary bearing as claimed in claim 4 system is characterized in that said rolling auxiliary bearing flatly or vertically is installed in the pedestal face-to-face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210240561XA CN102767563A (en) | 2012-07-11 | 2012-07-11 | Rolling auxiliary bearing and auxiliary bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210240561XA CN102767563A (en) | 2012-07-11 | 2012-07-11 | Rolling auxiliary bearing and auxiliary bearing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767563A true CN102767563A (en) | 2012-11-07 |
Family
ID=47095079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210240561XA Pending CN102767563A (en) | 2012-07-11 | 2012-07-11 | Rolling auxiliary bearing and auxiliary bearing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767563A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422645A (en) * | 2015-11-27 | 2016-03-23 | 中国科学院西安光学精密机械研究所 | Assembling adjusting method for surrounding type precision shaft system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1043909A (en) * | 1996-07-30 | 1998-02-17 | Nippon Seiko Kk | Rotary body driving device |
| US20030099416A1 (en) * | 2001-05-29 | 2003-05-29 | Nsk Ltd. | Rolling sliding member and rolling apparatus |
| CN1548783A (en) * | 2003-05-21 | 2004-11-24 | 上海市轴承技术研究所 | Self-lubricating angle contact ball bearing |
| CN101262184B (en) * | 2008-04-29 | 2010-07-14 | 哈尔滨工业大学 | Vertical bending layer energy converter round disk stator and ultrasonic electromotor using this stator |
| CN101946099A (en) * | 2008-02-22 | 2011-01-12 | Ntn株式会社 | Rolling bearing is with parts and rolling bearing |
| CN202087908U (en) * | 2011-05-23 | 2011-12-28 | 广东工业大学 | Main shaft system of electrochemical micromachining and micro-electric spark machining tool |
-
2012
- 2012-07-11 CN CN201210240561XA patent/CN102767563A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1043909A (en) * | 1996-07-30 | 1998-02-17 | Nippon Seiko Kk | Rotary body driving device |
| US20030099416A1 (en) * | 2001-05-29 | 2003-05-29 | Nsk Ltd. | Rolling sliding member and rolling apparatus |
| CN1548783A (en) * | 2003-05-21 | 2004-11-24 | 上海市轴承技术研究所 | Self-lubricating angle contact ball bearing |
| CN101946099A (en) * | 2008-02-22 | 2011-01-12 | Ntn株式会社 | Rolling bearing is with parts and rolling bearing |
| CN101262184B (en) * | 2008-04-29 | 2010-07-14 | 哈尔滨工业大学 | Vertical bending layer energy converter round disk stator and ultrasonic electromotor using this stator |
| CN202087908U (en) * | 2011-05-23 | 2011-12-28 | 广东工业大学 | Main shaft system of electrochemical micromachining and micro-electric spark machining tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422645A (en) * | 2015-11-27 | 2016-03-23 | 中国科学院西安光学精密机械研究所 | Assembling adjusting method for surrounding type precision shaft system |
| CN105422645B (en) * | 2015-11-27 | 2017-09-22 | 中国科学院西安光学精密机械研究所 | A kind of Method of Adjustment of encircling type precision bearing system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121107 |