CN1544821A - Electromagnetic bearing protecting equipment - Google Patents
Electromagnetic bearing protecting equipment Download PDFInfo
- Publication number
- CN1544821A CN1544821A CNA2003101038614A CN200310103861A CN1544821A CN 1544821 A CN1544821 A CN 1544821A CN A2003101038614 A CNA2003101038614 A CN A2003101038614A CN 200310103861 A CN200310103861 A CN 200310103861A CN 1544821 A CN1544821 A CN 1544821A
- Authority
- CN
- China
- Prior art keywords
- bearing
- rotor
- electromagnetic
- adopts
- protecting
- 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
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 26
- 230000035939 shock Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 11
- 229920001967 Metal rubber Polymers 0.000 claims description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000007770 graphite material Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 229910002804 graphite Inorganic materials 0.000 description 10
- 239000010439 graphite Substances 0.000 description 10
- 230000008093 supporting effect Effects 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
-
- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/066—Ball or roller bearings
-
- 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
Abstract
The invention relates to an electromagnetic bearing protecting device, and its character: it includes kernel bearing, buffer component and rotor protecting component; the kernel bearing includes a radial bearing on the top and radial bearing at the bottom end; the buffer component includes shock-resistant protecting rings and the locating rings, elastic ring set between the top bearing seat and the radial bearing, and elastic bearing cover set on the top of the radial bearing; the rotor protecting component includes protective sleeves corresponding to the protecting rings, respectively and fixed on the rotor. It can buffer and bear rotor drop load and normally run until the system stops, thus effectively protecting the whole rotor system against destruction. It can be widely applied to protection and support of electromagnetic bearing, especially auxiliary support of rotor-electromagnetic bearing system.
Description
Technical field
The present invention relates to a kind of electromagnetic bearing protective gear, particularly about the protective gear of electromagnetic bearing in the large-scale vertical rotor-support-foundation system.
Background technique
The basic principle of electromagnetic bearing (being called active magnetic bearings, active magnetic bearing again) is to utilize magnetic force that rotating shaft is suspended in the magnetic field, makes rotating shaft not have the machinery contact in the space, does not have the rotation of wearing and tearing ground.Compare with sliding bearing with traditional rolling bearing, there is not Mechanical Contact in magnetic bearing, and rotor can reach very high running speed, and have do not have wearing and tearing, advantages such as energy consumption is low, noise is little, the life-span is long, need not to lubricate, no oil pollution.
Because the above-mentioned advantage of electromagnetic bearing, and can carry out the pollution that ACTIVE CONTROL also can be avoided high temperature gas cooled reactor power generation system associated loop, therefore be used in the supporting of country " 15 " 863 Program key project-10MW high-temperature gas-cooled reactor helium gas turbine power generation system (HTR-10GT) rotor, this rotor is about 7m, heavily about 1500Kg.
Yet when power generation system is not moved, particularly electromagnetic bearing lost efficacy or during overload, must provide secondary support means, be not destroyed after the supporting that loses electromagnetic bearing with the assurance system, so the auxiliary protection supporting was the basic assurance of the normal operation of whole system.In the research relevant with secondary support means, the research that particularly is applied to the protective gear in the large-scale vertical turbine is also very limited at present.Although abroad in the report, have and in horizontal rotor-support-foundation system, use angular contact ball bearing and in the vertical rotor system, use leaf spring to carry out the report of integrated buffer, but, in existing data, but seldom mention as the whole auxiliary bearing device of a kind of large-scale vertical turbine system rotor.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide and a kind ofly can have the aiding support effect to system in lost efficacy back of electromagnetic bearing, be specially adapted to the electromagnetic bearing protective gear of using in the large-scale vertical rotor-support-foundation system.
For achieving the above object, the present invention takes following technological scheme: a kind of electromagnetic bearing protective gear is characterized in that: it comprises core bearing, buffer unit and rotor guard block three parts; Described core mandrel is contracted and is drawn together the footpath cod that is bearing in rotor active magnetic bearing system upper end by upper bearing sleeve and upper bearing bracket, and the radial bearing that is bearing in rotor active magnetic bearing system lower end by lower bearing sleeve, step and Internal and external cycle bearing cap; Described buffer unit comprises shock-resistant protecting and the positioning ring thereof that is fixed on the described upper and lower bearing housing, is arranged on the elastic ring between described upper bearing bracket and the described footpath cod, and the resilient bearing lid that is arranged on cod top, described footpath; Described rotor guard block comprises corresponding with the described guard ring position in the described buffer unit respectively described epitrochanterian protecting jacket that is fixed on.
Described core bearing adopts full-ceramic bearing or hybrid ceramic bearing.
Described core bearing is made as if employing plain bearing steel, then to rolling element and Internal and external cycle and rolling element contact segment employing Carburization Treatment.
Described shock-resistant protecting adopts a kind of the making in graphite material or the high-strength carbon fiber material.
Described elastic ring adopts metal rubber material to make.
Described resilient bearing lid adopts the spring steel plate compacting to form.
The present invention is owing to take above technological scheme, it has the following advantages: 1, the present invention is owing to be provided with a whole set of electromagnetic bearing protective gear that comprises upper and lower core bearing, buffer unit and rotor guard block, therefore in case electromagnetic bearing takes place lost efficacy when falling, the rotor guard block can protect rotor falling Shi Buhui by the secondary support means rotor surface of damaging; Buffer unit can cushion and absorb the impact force and the heat of rotor effectively, and protection core bearing is not smashed or weld the generation of dead phenomenon by huge impact power; The core bearing can bear rotor the load of falling continue rotation, until system-down, not only can further reduce heating value, and can protect whole rotor system against destruction effectively.2, core bearing of the present invention is owing to adopt angular contact ball bearing in the upper end, and the radial and axial power when bear rotor is fallen simultaneously adopts ball bearing in the lower end, can play the effect of auxiliary radial support, has avoided the generation of rotor self-excited vibration; Core bearing of the present invention adopts full pottery or hybrid ceramic bearing or carries out Carburization Treatment simultaneously, has improved the self lubricity of core bearing itself, has avoided making the pollution that with lubricator causes.3, the shock-resistant protecting in the buffer unit of the present invention adopts graphite material or high-strength carbon fiber to make; it not only has higher shock-resistant ability; and has a good lubricated and wear-resisting property; the present invention adopts two shock-resistant protecting in top; can cooperate with the rotor guard block; not only radial friction can be born, axial impact force can also be born.4, the present invention is because the elastic material that adopts metal-rubber etc. to have higher stiffness in buffer unit is made elastic ring; adopt spring steel plate to make the resilient bearing lid; therefore when core mandrel affords impact; radial and axial buffering leeway arranged all, can protect the core bearing not to be damaged effectively.The present invention can be widely used in the protection supporting of electromagnetic bearing, is specially adapted to also can develop into the protective gear that other carrying is fallen moving body at a high speed simultaneously in the protection supporting of active magnetic bearing system in the large-scale vertical turbine.
Description of drawings
Fig. 1 is a structural representation of the present invention
Embodiment
As shown in Figure 1, protective gear of the present invention is provided with as the protective gear of active magnetic bearing system, and whole device divides upper and lower two-part, and every part comprises core bearing, buffer unit and rotor guard block again.Top is installed in rotor 1 outside of active magnetic bearing system top, and the bottom is installed in rotor 1 outside of active magnetic bearing system below, and the gap all and between the rotor 1 is left in the upper and lower part.
Core mandrel of the present invention is contracted and is drawn together the deep groove ball bearing 12 that angular contact ball bearing 11 and that a pair of symmetry is installed in top is installed in the bottom, angular contact ball bearing 11 is by upper bearing sleeve 13, upper bearing bracket 14 and resilient bearing lid 15 supportings of withstanding angular contact ball bearing 11 outer rings, and deep groove ball bearing 12 is by lower bearing sleeve 16, step 17 and 18,19 supportings of inside and outside circle bearing cap.
Buffer unit of the present invention comprises that top is arranged on two upper and lower graphite annuluss 21,22 of upper bearing sleeve 13 inward flanges 131, be arranged on the elastic ring 24 between angular contact ball bearing 11 and the upper bearing bracket 14, and the bottom is arranged on the graphite annulus 23 in the bearing housing 16; The resilient bearing lid 15 that is arranged on top, angular contact ball bearing 11 outer ring also can be used as the part of buffer unit.In the upper end of graphite annulus 21 and the lower end of graphite annulus 22 positioning ring 25,26 is set respectively, positioning ring 25,26 is separately fixed at upper bearing sleeve 14 tops and bottom, and positioning ring 18 also covers as the positioning bearing of angular contact ball bearing 13 inner rings simultaneously.The lower end of graphite annulus 23 withstands on the inward flange 161 of lower bearing sleeve 16, and the upper end of graphite annulus 23 is provided with a positioning ring 27, and being pressed in above the positioning ring 27 is the inner-ring bearing lid 18 of deep groove ball bearing 12.
Rotor guard block of the present invention comprises the protecting jacket 31,32,33 that is fixed on the rotor 1, can also comprise protecting jacket 34. Protecting jacket 31,32,33 is corresponding with the mounting point of graphite annulus 21,22,23; in case rotor 1 falls; what contact with graphite annulus 21,22,23 bumps is protecting jacket 21,22,23, and can not be rotor 1 surface, therefore can protect rotor 1 not broken effectively.Protecting jacket 31,32,33,34 can adopt various mechanical parts localization method and rotors commonly used to fix, such as screw, key etc.
The top of protective gear of the present invention is mainly used to bear the footpath thrust load, is the emphasis of whole vertical rotor system supplymentary design bearing, be rotor 1 fall load mainly bear part.The bottom of protective gear is mainly used to bear radial load, increases the stability of system, prevents the generation of self-excited vibration.
Core bearing among the present invention can also be taked other bearing with radial and axial support function except that adopting angular contact ball bearing 11, deep groove ball bearing 12 also can be taked the bearing of structural type.Simultaneously can adopt full pottery or hybrid ceramic bearing aspect the material of bearing.If adopt common steel bearing, can take heat treatment measures such as carburizing with the rolling element contact segment to rolling element surface and Internal and external cycle, in order to the greasy property of raising rolling element, can avoid like this making with lubricator.The more important thing is when rotor 1 falls at a high speed, because the influence of heating and speed even adopt oiling agent also not have corresponding lubrication, therefore adopts the present invention can solve this important lubrication problem.
Graphite annulus 21,22,23 in the buffer unit of the present invention also can adopt the guard ring of other material to replace, such as the guard ring that adopts the high-strength carbon fiber material.Elastic ring 24 can adopt metal rubber material to make, and also can take other material to make.Resilient bearing lid 15 can adopt the spring steel plate compacting to form, and also can adopt other material and structure.
When protective gear of the present invention was in off working state, each parts of protective gear did not all contact with the protecting jacket 31,32,33 of rotor 1 and protection rotor, and whole rotor-support-foundation system does not have the friction operation under the effect of electromagnetic bearing.After electromagnetic bearing lost efficacy, the rotor 1 that loses supporting will drop down under the state that runs up.At this moment protective gear will be brought into play the aiding support effect, huge impact load will be uninstalled by major part by buffer units such as graphite annulus 21,22,23, elastic ring 24 and resilient bearing lids 15, heating value also is greatly diminished, and system can be because of not overheated and cause corresponding destruction; Can bear most of unloaded impact force so that core mandrel holds 11,12 simultaneously, remain in operation, play the effect of whole rotor of protection and active magnetic bearing system to system-down.
Claims (10)
1, a kind of electromagnetic bearing protective gear is characterized in that: it comprises core bearing, buffer unit and rotor guard block three parts;
Described core mandrel is contracted and is drawn together the footpath cod that is bearing in rotor active magnetic bearing system upper end by upper bearing sleeve and upper bearing bracket, and the radial bearing that is bearing in rotor active magnetic bearing system lower end by lower bearing sleeve, step and inside and outside circle bearing cap;
Described buffer unit comprises shock-resistant protecting and the positioning ring thereof that is fixed on the described upper and lower bearing housing, is arranged on the elastic ring between described upper bearing bracket and the described footpath cod, and the resilient bearing lid that is arranged on cod top, described footpath;
Described rotor guard block comprises some corresponding with described guard ring position respectively described epitrochanterian protecting jackets that are fixed on.
2, electromagnetic bearing protective gear as claimed in claim 1 is characterized in that: described footpath cod adopts a pair of angular contact ball bearing.
3, electromagnetic bearing protective gear as claimed in claim 1 is characterized in that: described radial bearing adopts ball bearing.
4, as claim 1 or 2 or 3 described electromagnetic bearing protective gears, it is characterized in that: described core bearing adopts full pottery or hybrid ceramic bearing.
5, as claim 1 or 2 or 3 described electromagnetic bearing protective gears, it is characterized in that: described core bearing is adopted Carburization Treatment.
6, as claim 1 or 2 or 3 described electromagnetic bearing protective gears, it is characterized in that: described shock-resistant protecting adopts a kind of the making in graphite material and the high-strength carbon fiber material.
7, as claim 1 or 2 or 3 described electromagnetic bearing protective gears, it is characterized in that: described elastic ring adopts metal rubber material to make.
8, electromagnetic bearing protective gear as claimed in claim 6 is characterized in that: described elastic ring adopts metal rubber material to make.
9, as claim 1 or 2 or 3 or 8 described electromagnetic bearing protective gears, it is characterized in that: described resilient bearing lid adopts the spring steel plate compacting to form.
10, electromagnetic bearing protective gear as claimed in claim 6 is characterized in that: described resilient bearing lid adopts the spring steel plate compacting to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101038614A CN1246601C (en) | 2003-11-14 | 2003-11-14 | Electromagnetic bearing protecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101038614A CN1246601C (en) | 2003-11-14 | 2003-11-14 | Electromagnetic bearing protecting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1544821A true CN1544821A (en) | 2004-11-10 |
| CN1246601C CN1246601C (en) | 2006-03-22 |
Family
ID=34333355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101038614A Expired - Lifetime CN1246601C (en) | 2003-11-14 | 2003-11-14 | Electromagnetic bearing protecting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1246601C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025220A1 (en) * | 2006-08-24 | 2008-03-06 | Aig Industrial Group | Double-ring split bearing protector |
| CN101867261A (en) * | 2010-03-30 | 2010-10-20 | 洛阳轴研科技股份有限公司 | Method for selecting outer rotor matched with gyro motor bearings and selection device |
| CN101571056B (en) * | 2009-06-09 | 2011-05-18 | 北京航空航天大学 | Miniature rotor dynamic mechanical damping structure |
| 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 |
| CN102797757A (en) * | 2012-08-21 | 2012-11-28 | 清华大学 | Assistant bearing system for electromagnetic bearing |
| CN103163937A (en) * | 2011-12-09 | 2013-06-19 | 阿尔卑斯电气株式会社 | Multi-direction input device |
| CN104254699A (en) * | 2012-02-13 | 2014-12-31 | 通用电气能源能量变换技术有限公司 | Set of rolling bearings and corresponding rotary machine |
| CN105431638A (en) * | 2013-05-30 | 2016-03-23 | 诺沃皮尼奥内股份有限公司 | Rotating machine with at least one active magnetic bearing and auxiliary rolling bearings |
| CN111799927A (en) * | 2020-07-17 | 2020-10-20 | 珠海格力电器股份有限公司 | Rotating shaft supporting and protecting structure, magnetic suspension bearing supporting system and motor |
| CN112460146A (en) * | 2019-09-06 | 2021-03-09 | 北京亚之捷环保科技有限责任公司 | Active magnetic suspension rotor falling protection system |
| WO2021139292A1 (en) * | 2020-01-07 | 2021-07-15 | 珠海格力电器股份有限公司 | Axial protection system for magnetic suspension bearing and rotating shaft assembly |
| WO2021139291A1 (en) * | 2020-01-07 | 2021-07-15 | 珠海格力电器股份有限公司 | Radial protection system for magnetic levitation bearing, and rotation shaft assembly |
| CN113915239A (en) * | 2021-09-30 | 2022-01-11 | 大连理工大学 | Anti-large-impact composite structure bearing with sliding and rolling bearing coupling design |
-
2003
- 2003-11-14 CN CNB2003101038614A patent/CN1246601C/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025220A1 (en) * | 2006-08-24 | 2008-03-06 | Aig Industrial Group | Double-ring split bearing protector |
| CN101571056B (en) * | 2009-06-09 | 2011-05-18 | 北京航空航天大学 | Miniature rotor dynamic mechanical damping structure |
| CN101867261A (en) * | 2010-03-30 | 2010-10-20 | 洛阳轴研科技股份有限公司 | Method for selecting outer rotor matched with gyro motor bearings and selection device |
| CN101867261B (en) * | 2010-03-30 | 2012-07-04 | 洛阳轴研科技股份有限公司 | Method for selecting outer rotor matched with gyro motor bearings and selection device |
| CN103163937A (en) * | 2011-12-09 | 2013-06-19 | 阿尔卑斯电气株式会社 | Multi-direction input device |
| CN103163937B (en) * | 2011-12-09 | 2015-07-08 | 阿尔卑斯电气株式会社 | Multi-direction input 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 |
| 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 |
| CN104254699B (en) * | 2012-02-13 | 2018-03-13 | 通用电气能源能量变换技术有限公司 | Roller bearing group and corresponding rotary machine |
| CN104254699A (en) * | 2012-02-13 | 2014-12-31 | 通用电气能源能量变换技术有限公司 | Set of rolling bearings and corresponding rotary machine |
| US9309922B2 (en) | 2012-02-13 | 2016-04-12 | Ge Energy Power Conversion Technology Limited | Set of rolling bearings and corresponding rotary machine |
| CN102797757A (en) * | 2012-08-21 | 2012-11-28 | 清华大学 | Assistant bearing system for electromagnetic bearing |
| CN105431638A (en) * | 2013-05-30 | 2016-03-23 | 诺沃皮尼奥内股份有限公司 | Rotating machine with at least one active magnetic bearing and auxiliary rolling bearings |
| CN105431638B (en) * | 2013-05-30 | 2018-03-23 | 诺沃皮尼奥内股份有限公司 | Rotating machinery with least one Active Magnetic Bearing and auxiliary rolling bearing |
| US10125815B2 (en) | 2013-05-30 | 2018-11-13 | Nuovo Pignone Srl | Rotating machine with at least one active magnetic bearing and auxiliary rolling bearings |
| CN112460146A (en) * | 2019-09-06 | 2021-03-09 | 北京亚之捷环保科技有限责任公司 | Active magnetic suspension rotor falling protection system |
| WO2021139292A1 (en) * | 2020-01-07 | 2021-07-15 | 珠海格力电器股份有限公司 | Axial protection system for magnetic suspension bearing and rotating shaft assembly |
| WO2021139291A1 (en) * | 2020-01-07 | 2021-07-15 | 珠海格力电器股份有限公司 | Radial protection system for magnetic levitation bearing, and rotation shaft assembly |
| CN111799927A (en) * | 2020-07-17 | 2020-10-20 | 珠海格力电器股份有限公司 | Rotating shaft supporting and protecting structure, magnetic suspension bearing supporting system and motor |
| CN113915239A (en) * | 2021-09-30 | 2022-01-11 | 大连理工大学 | Anti-large-impact composite structure bearing with sliding and rolling bearing coupling design |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1246601C (en) | 2006-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1246601C (en) | Electromagnetic bearing protecting equipment | |
| CN100523535C (en) | Centripetal protection bearing for magnetic levitation bearing system | |
| US20080224556A1 (en) | Methods of controlling the instability in fluid film bearings | |
| CN100587283C (en) | Centripetal thrust force protection bearing used for magnetic suspension bearing system | |
| CN106369051B (en) | A kind of magnetic suspension bearing protection device | |
| CN206054555U (en) | A kind of electric dynamometer intermediate support | |
| CN201723576U (en) | Vertical motor bearing device | |
| CN104930054A (en) | Roller bearing | |
| CN205078606U (en) | Lubricated two way operation thrust bearing device of water | |
| CN103542036B (en) | Coming away type nuclear power station main pump flywheel | |
| CN105600341A (en) | Permanent magnet carrier roller belt conveyor | |
| CN101550864B (en) | Turbocharger supported by pressure-charging flow passage groove self-lubricating dynamic-static pressure air bearing | |
| CN102042337A (en) | Self-lubricating sliding bearing | |
| CN101924413A (en) | Permanent magnet and rolling-sliding bearing type motor rotor bearing and rotary machine with same | |
| CN212155059U (en) | Main shaft system of large wind generating set | |
| CN207333187U (en) | A kind of vertical dry pump apical axis holds self lubricating system | |
| CN216519169U (en) | Automobile steering knuckle sealing damping bearing | |
| CN220241535U (en) | Telescopic arm supporting roller of capping robot of iron mixing truck | |
| CN211778036U (en) | Middle open type centrifugal pump | |
| CN213332044U (en) | Closed double-row angular contact bearing | |
| CN211950665U (en) | Diesel engine | |
| CN115823009B (en) | Self-adaptive superconducting magnetic-hydraulic double-floating bearing with elastic bearing surface | |
| CN211423185U (en) | Wind-powered electricity generation slewing bearing double-lip sealing mechanism | |
| CN107218219A (en) | A kind of vertical dry pump apical axis holds lubricating system | |
| CN218549664U (en) | New forms of energy aerogenerator damping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060322 |