CN102767565A - Rolling sliding integrated auxiliary bearing - Google Patents
Rolling sliding integrated auxiliary bearing Download PDFInfo
- Publication number
- CN102767565A CN102767565A CN2012102589488A CN201210258948A CN102767565A CN 102767565 A CN102767565 A CN 102767565A CN 2012102589488 A CN2012102589488 A CN 2012102589488A CN 201210258948 A CN201210258948 A CN 201210258948A CN 102767565 A CN102767565 A CN 102767565A
- 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.)
- Granted
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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
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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
- 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 that is used for the active magnetic bearings system, relate in particular to a kind of rolling slip integral type auxiliary bearing that is used for the active magnetic bearings system.
Background technique
Active magnetic bearings has rotating speed height, advantage such as contactless, unlubricated, and the advantage that can not be substituted is arranged at some special occasions.For preventing to transship or the rotor and the stator collision of high-speed motion when cutting off the power supply, the active magnetic bearings system generally all contains mechanical auxiliary bearing.When meeting accident, rotor relies on the auxiliary bearing supporting, stops operating gradually, avoids system failure.In addition, when normal mounting was keeped in repair, rotor also need be supported by auxiliary bearing.
Auxiliary bearing can be divided into rolling bearing and sliding bearing by the friction form.Because friction is less, the adaptation rotating speed is higher, adopts rolling bearing usually.Common rolling auxiliary bearing outer ring and pedestal are fixed, and between inner ring and rotor certain interval are arranged, and rolling bearing transfixion during the magnetic bearing proper functioning is transshipped or when falling, rotor contacts with inner ring, drives its high speed rotating.Contact the initial stage at rotor with inner ring, because the outer ring is static, inner ring and outer ring have very big speed discrepancy, and common rolling bearing has been proposed harsh requirement, and bearing often damages in this period.
Summary of the invention
The technical problem that (one) will solve
The technical problem that the present invention will solve provides a kind of rolling slip integral type auxiliary bearing, can adapt to the high-revolving operating mode of active magnetic bearings system well.
(2) technological scheme
In order to address the above problem; The invention provides a kind of rolling slip integral type auxiliary bearing; It mainly comprises back-up ring, the bearing base of liner bearing shell, the bearing (ball) cover of rolling bearing, rigid bearing inner ring, wherein, and rolling bearing inner ring and rotor interference fit; Rolling bearing integral body is rotated thereupon during the magnetic bearing proper functioning, transship or when falling the inner rolling of rolling bearing and the slip between outer ring and pedestal take place simultaneously.
Wherein, it is used for vertical magnetic bearing.
Wherein, it is used for horizontal magnetic bearing.
Wherein, said rolling bearing is the Metal Ball bearing.
Wherein, said rolling bearing is a ceramic ball bearing.
Wherein, it is not provided with retainer.
Wherein, it is provided with retainer.
(3) beneficial effect
The present invention makes auxiliary bearing can adapt to high rotational speed owing to adopt technique scheme.
Description of drawings
Fig. 1 is the slip integral type auxiliary bearing first embodiment's partial structurtes schematic representation that rolls of the present invention;
Fig. 2 is the slip integral type auxiliary bearing second embodiment's partial structurtes schematic representation that rolls of the present invention;
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
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 present invention's slip integral type auxiliary bearing that rolls mainly comprises back-up ring 3, the bearing base 4 of liner bearing shell, the bearing (ball) cover 5 of rotor 1, rolling bearing 2, rigid bearing inner ring.
Embodiment 1: with reference to Fig. 1.This structure is used for vertical magnetic bearing, and rolling bearing 2 is made up of a pair of angular contact ball bearing, bearing inner race and rotor 1 interference fit.Rotor 1 does not break away from inner ring during for the work of assurance auxiliary bearing, uses the back-up ring 3 of a rigid bearing inner ring.During the magnetic bearing proper functioning, rotor 1 drives bearing inner race and rotates together, and makes bearing outer ring reach same rotational speed or a certain less rotating speed.When overload or disconnection fault took place magnetic bearing system, rotor 1 drove rolling bearing 2 and contacts with bearing (ball) cover 5 with the bearing base 4 of liner bearing shell.Take place simultaneously 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, makes rolling bearing not fragile.
Embodiment 2: with reference to Fig. 2.This structure is used for horizontal magnetic bearing, thinks that thrust load is less, and rolling bearing 2 is deep groove ball bearings, and bearing inner race and rotor 1 interference fit use the back-up ring 3 of a rigid bearing inner ring to guarantee that rotor 1 and inner ring do not break away from.During the magnetic bearing proper functioning, rotor 1 drives bearing inner race and rotates together, and makes bearing outer ring reach same rotational speed or a certain less rotating speed.When overload or disconnection fault took place magnetic bearing system, rotor 1 drove rolling bearing 2 and contacts with bearing (ball) cover 5 with the bearing base 4 of liner bearing shell.Take place simultaneously 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, makes rolling bearing not fragile.
Above mode of execution only is used to explain the present invention; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also be made various variations and modification; Therefore all technological schemes that are equal to 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. rolling slip integral type auxiliary bearing; It mainly comprises back-up ring, the bearing base of liner bearing shell, the bearing (ball) cover of rolling bearing, rigid bearing inner ring; It is characterized in that; Rolling bearing inner ring and rotor interference fit, rolling bearing integral body is rotated thereupon during the magnetic bearing proper functioning, transship or when falling the inner rolling of rolling bearing and the slip between outer ring and pedestal take place simultaneously.
2. according to right 1 described rolling slip integral type auxiliary bearing, it is characterized in that it is used for vertical magnetic bearing.
3. according to right 1 described rolling slip integral type auxiliary bearing, it is characterized in that it is used for horizontal magnetic bearing.
4. according to right 1 described rolling slip integral type auxiliary bearing, it is characterized in that said rolling bearing is the Metal Ball bearing.
5. according to right 1 described rolling slip integral type auxiliary bearing, it is characterized in that said rolling bearing is a ceramic ball bearing.
6. according to right 1 described rolling slip integral type auxiliary bearing, it is characterized in that it is not provided with retainer.
7. according to right 1 described rolling slip integral type auxiliary bearing, it is characterized in that it is provided with 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 true CN102767565A (en) | 2012-11-07 |
| CN102767565B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821751A (en) * | 2019-10-17 | 2020-02-21 | 射阳远景能源科技有限公司 | Method for changing load of stressed part of variable-pitch bearing |
| US11274705B2 (en) * | 2016-02-19 | 2022-03-15 | Johnson Controls Technology Company | Vapor compression system and method of extending service life of same |
| CN115045909A (en) * | 2022-06-16 | 2022-09-13 | 浙江飞旋科技有限公司 | Foil dynamic pressure bearing and shafting of anti impact load |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028889A1 (en) * | 2003-08-29 | 2005-03-31 | Rexroth Indramat Gmbh | Bearing unit for a revolving radial load |
| 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 |
| CN102537045A (en) * | 2011-12-20 | 2012-07-04 | 南京航空航天大学 | Radial protection bearing device for automatically removing radial clearance of outer ring of rolling bearing |
| CN102588434A (en) * | 2011-01-11 | 2012-07-18 | 张平 | Permanent magnet suspension bearing and installation structure thereof |
-
2012
- 2012-07-24 CN CN201210258948.8A patent/CN102767565B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028889A1 (en) * | 2003-08-29 | 2005-03-31 | Rexroth Indramat Gmbh | Bearing unit for a revolving radial load |
| 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 |
| CN102537045A (en) * | 2011-12-20 | 2012-07-04 | 南京航空航天大学 | Radial protection bearing device for automatically removing radial clearance of outer ring of rolling bearing |
Cited By (5)
| 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 |
| US11988250B2 (en) | 2016-02-19 | 2024-05-21 | Tyco Fire & Security Gmbh | Vapor compression system and method of extending service life of same |
| CN110821751A (en) * | 2019-10-17 | 2020-02-21 | 射阳远景能源科技有限公司 | Method for changing load of stressed part of variable-pitch bearing |
| CN115045909A (en) * | 2022-06-16 | 2022-09-13 | 浙江飞旋科技有限公司 | Foil dynamic pressure bearing and shafting of anti impact load |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102767565B (en) | 2015-01-14 |
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