CN102767565B - Rolling sliding integrated auxiliary bearing - Google Patents
Rolling sliding integrated auxiliary bearing Download PDFInfo
- Publication number
- CN102767565B CN102767565B CN201210258948.8A CN201210258948A CN102767565B CN 102767565 B CN102767565 B CN 102767565B CN 201210258948 A CN201210258948 A CN 201210258948A CN 102767565 B CN102767565 B CN 102767565B
- Authority
- CN
- China
- Prior art keywords
- bearing
- rolling
- integral type
- type auxiliary
- auxiliary 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.)
- Active
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 50
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
- F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
- F16C19/543—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact in O-arrangement
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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
- F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
-
- 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
- F16C32/044—Active magnetic bearings
- F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
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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
- F16C39/02—Relieving load on bearings using mechanical means
Landscapes
- Rolling Contact Bearings (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention relates to an auxiliary bearing for active magnetic bearing system, in particular to a rolling sliding integrated auxiliary bearing for active magnetic bearing system. The rolling sliding integrated auxiliary bearing mainly comprises a rolling bearing, a retainer ring for fixing the bearing inner ring, a bearing base lined with a bearing bush, and a bearing end cover, wherein the inner ring of the rolling bearing is in interference fit with a rotor. When the magnetic bearing works normally, the rolling bearing, as a whole, rotates along with the magnetic bearing; and in case of overload or drop, rolling inside the rolling bearing and sliding between the outer ring and the base take place at the same time. According to the invention, the auxiliary bearing can adapt to relatively high rotation speed.
Description
Technical field
The present invention relates to a kind of auxiliary bearing for active magnet bearing systems, particularly relate to a kind of rolling slip integral type auxiliary bearing for active magnet bearing systems.
Background technique
Active magnetic bearings has the advantages such as rotating speed is high, contactless, unlubricated, has the advantage that can not be substituted at some special occasions.For prevent from transshipping or power-off time the rotor of high-speed motion and stator collide, active magnet bearing systems generally all contains mechanical auxiliary bearing.When meeting accident, rotor relies on auxiliary bearing supporting, stops operating gradually, avoids system failure.In addition, when normal mounting is keeped in repair, rotor also needs to be supported by auxiliary bearing.
Auxiliary bearing can be divided into rolling bearing and sliding bearing by friction type.Because friction is less, it is higher to adapt to rotating speed, usually adopt rolling bearing.Common rolling auxiliary bearing outer ring and pedestal are fixed, and have certain interval between inner ring and rotor, rolling bearing transfixion when magnetic bearing normally works, and when transshipping or fall, rotor contacts with inner ring, drives its High Rotation Speed.Contact the initial stage at rotor with inner ring, because outer ring is static, inner ring and outer ring have very large speed discrepancy, propose harsh requirement to common rolling bearing, and bearing often damages in this period.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is to provide a kind of rolling slip integral type auxiliary bearing, can adapt to the high-revolving operating mode of active magnet bearing systems well.
(2) technological scheme
In order to solve the problem, the invention provides a kind of rolling slip integral type auxiliary bearing, it mainly comprises rolling bearing, the back-up ring of rigid bearing inner ring, the bearing base of liner bearing shell, bearing (ball) cover, wherein, rolling bearing inner ring and rotor interference fit, when magnetic bearing normally works, rolling bearing entirety is rotated thereupon, and when transshipping or fall, the rolling of rolling bearing inside and the slip between outer ring and pedestal occur simultaneously.
Wherein, it is for vertical magnetic bearing.
Wherein, it is for horizontal magnetic bearing.
Wherein, described rolling bearing is Metal Ball bearing.
Wherein, described rolling bearing is ceramic ball bearing.
Wherein, it does not arrange retainer.
Wherein, it arranges retainer.
(3) beneficial effect
The present invention, owing to adopting technique scheme, enables auxiliary bearing adapt to higher rotating speed.
Accompanying drawing explanation
Fig. 1 is the slip integral type auxiliary bearing first embodiment partial structurtes schematic diagram that rolls of the present invention;
Fig. 2 is the slip integral type auxiliary bearing second embodiment partial structurtes schematic diagram that rolls of the present invention;
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
The present invention's slip integral type auxiliary bearing that rolls mainly comprises rotor 1, rolling bearing 2, the back-up ring 3 of rigid bearing inner ring, the bearing base 4 of liner bearing shell, bearing (ball) cover 5.
Embodiment 1: with reference to Fig. 1.This structure is used for vertical magnetic bearing, and rolling bearing 2 is made up of pair of horns contact ball bearing, bearing inner race and rotor 1 interference fit.For when ensureing that auxiliary bearing works, rotor 1 and inner ring do not depart from, use the back-up ring 3 of a rigid bearing inner ring.When magnetic bearing normally works, rotor 1 drives bearing inner race to rotate together, and makes bearing outer ring reach same rotational speed or a certain less rotating speed.When overload or disconnection fault occur magnetic bearing system, rotor 1 drives rolling bearing 2 to contact with bearing (ball) cover 5 with the bearing base 4 of liner bearing shell.Occur with the rolling friction of rear rolling bearing 2 inside and the sliding friction of bearing outer ring and pedestal 4, because housing washer has certain rotating speed, the speed discrepancy between inside and outside circle is less simultaneously, makes rolling bearing not fragile.
Embodiment 2: with reference to Fig. 2.This structure is used for horizontal magnetic bearing, and think that thrust load is less, rolling bearing 2 is deep groove ball bearings, bearing inner race and rotor 1 interference fit, and rotor 1 and inner ring do not depart to use the back-up ring 3 of a rigid bearing inner ring to ensure.When magnetic bearing normally works, rotor 1 drives bearing inner race to rotate together, and makes bearing outer ring reach same rotational speed or a certain less rotating speed.When overload or disconnection fault occur magnetic bearing system, rotor 1 drives rolling bearing 2 to contact with bearing (ball) cover 5 with the bearing base 4 of liner bearing shell.Occur with the rolling friction of rear rolling bearing 2 inside and the sliding friction of bearing outer ring and pedestal 4, because housing washer has certain rotating speed, the speed discrepancy between inside and outside circle is less simultaneously, makes rolling bearing not fragile.
Above mode of execution is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technological schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (7)
1. a rolling slip integral type auxiliary bearing, it mainly comprises rolling bearing, the back-up ring of rigid bearing inner ring, the bearing base of liner bearing shell, bearing (ball) cover, it is characterized in that, rolling bearing inner ring and rotor interference fit, when magnetic bearing normally works, rolling bearing entirety is rotated thereupon, overload or when falling rotor drive rolling bearing contact with bearing (ball) cover with the bearing base of liner bearing shell, the rolling of rolling bearing inside and the slip between outer ring and pedestal occur simultaneously.
2. rolling slip integral type auxiliary bearing according to claim 1, it is characterized in that, it is for vertical magnetic bearing.
3. rolling slip integral type auxiliary bearing according to claim 1, it is characterized in that, it is for horizontal magnetic bearing.
4. rolling slip integral type auxiliary bearing according to claim 1, it is characterized in that, described rolling bearing is Metal Ball bearing.
5. rolling slip integral type auxiliary bearing according to claim 1, it is characterized in that, described rolling bearing is ceramic ball bearing.
6. rolling slip integral type auxiliary bearing according to claim 1, it is characterized in that, it does not arrange retainer.
7. rolling slip integral type auxiliary bearing according to claim 1, it is characterized in that, it arranges retainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210258948.8A CN102767565B (en) | 2012-07-24 | 2012-07-24 | Rolling sliding integrated auxiliary bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210258948.8A CN102767565B (en) | 2012-07-24 | 2012-07-24 | Rolling sliding integrated auxiliary bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102767565A CN102767565A (en) | 2012-11-07 |
| CN102767565B true CN102767565B (en) | 2015-01-14 |
Family
ID=47095081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210258948.8A Active CN102767565B (en) | 2012-07-24 | 2012-07-24 | Rolling sliding integrated auxiliary bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767565B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11274705B2 (en) * | 2016-02-19 | 2022-03-15 | Johnson Controls Technology Company | Vapor compression system and method of extending service life of same |
| CN112780489B (en) * | 2019-10-17 | 2021-11-23 | 射阳远景能源科技有限公司 | Variable pitch bearing and method for prolonging service life of variable pitch bearing |
| CN115045909B (en) * | 2022-06-16 | 2023-09-15 | 浙江飞旋科技有限公司 | Impact load-resistant foil hydrodynamic bearing and shafting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201896870U (en) * | 2011-01-20 | 2011-07-13 | 大连华阳光大密封有限公司 | Bearing retainer ring for rolling bearing |
| CN101586619B (en) * | 2009-06-26 | 2011-11-16 | 西安交通大学 | Sliding-rolling composite bearing device |
| CN102588434A (en) * | 2011-01-11 | 2012-07-18 | 张平 | Permanent magnet suspension bearing and installation structure thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10340261A1 (en) * | 2003-08-29 | 2005-03-31 | Rexroth Indramat Gmbh | Bearing unit for circulating radial load |
| CN102537045B (en) * | 2011-12-20 | 2013-12-25 | 南京航空航天大学 | Radial protection bearing device for automatically removing radial clearance of outer ring of rolling bearing |
-
2012
- 2012-07-24 CN CN201210258948.8A patent/CN102767565B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586619B (en) * | 2009-06-26 | 2011-11-16 | 西安交通大学 | Sliding-rolling composite bearing device |
| CN102588434A (en) * | 2011-01-11 | 2012-07-18 | 张平 | Permanent magnet suspension bearing and installation structure thereof |
| CN201896870U (en) * | 2011-01-20 | 2011-07-13 | 大连华阳光大密封有限公司 | Bearing retainer ring for rolling bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102767565A (en) | 2012-11-07 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |