CN102808857B - Bearing assembly on transmission shaft of wind driven generator - Google Patents
Bearing assembly on transmission shaft of wind driven generator Download PDFInfo
- Publication number
- CN102808857B CN102808857B CN201210288946.3A CN201210288946A CN102808857B CN 102808857 B CN102808857 B CN 102808857B CN 201210288946 A CN201210288946 A CN 201210288946A CN 102808857 B CN102808857 B CN 102808857B
- Authority
- CN
- China
- Prior art keywords
- bearing
- transmission shaft
- ring
- driven generator
- cover
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Wind Motors (AREA)
Abstract
The invention relates to a bearing assembly on a transmission shaft of a wind driven generator. The bearing assembly comprises a bearing block fixed on a base; a bearing capable of axially moving along with the transmission shaft is arranged in the bearing block; and a bearing end cap is arranged on one side of the bearing block. The technical scheme includes that an elastic device is arranged between an outer ring of the bearing and the bearing end cap and comprises a thrust ring arranged on one side of the outer ring of the bearing, and a plurality of elastic units are arranged on an end surface of the thrust ring. By the elastic device, the outer ring of the bearing is axially compacted on the bearing end cap, so that the bearing bears part of axial force, and bearing load of a fixed bearing on the transmission shaft can be reduced.
Description
[technical field]
The present invention relates to a kind of bearing unit, the bearing unit particularly in transmission shaft of wind driven generator.
[background technique]
Mean level axis wind power generator, in its transmission system, in order to ensure the running precision of blower fan, generator adopts two bearing supporting drive shafts usually when transmission, because its working environment temperature difference of generator is larger, therefore its expand with heat and contract with cold make elongate axis, shrink obvious, in order to not make transmission shaft be stuck when expanding with heat and contract with cold change, one of them bearing is fixing, and another bearing can along with transmission shaft axial stretching, it does not axially contact with pedestal, therefore can not bear axial force.Such generator at work nearly all axial force all acts on fixed end bearing.Due to generator, operationally its axial force is very large, and single bearing load carrying capacity is limited, causes the fixed end bearing axial load factor of some blower fans and premature failure, causes motor not run well.
[summary of the invention]
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of structure simple, also can carry the bearing unit in the transmission shaft of wind driven generator of axial force with transmission shaft axial stretching.
In order to solve the problem, the present invention by the following technical solutions:
Bearing unit in a kind of transmission shaft of wind driven generator, comprise the bearing support be fixed on pedestal, be provided with in described bearing support can with transmission shaft move axially bearing, described bearing support side is provided with bearing (ball) cover, it is characterized in that: be provided with elastic device between the outer ring of described bearing and bearing (ball) cover.
Bearing unit in a kind of transmission shaft of wind driven generator as above, is characterized in that: described elastic device comprises the thrust ring being located at described bearing outer ring side, and described thrust ring end face is provided with multiple Flexible element.
Bearing unit in a kind of transmission shaft of wind driven generator as above, it is characterized in that: described Flexible element comprises the accommodating cover of elastic component be located on described thrust ring end face, be provided with elastic component in the accommodating cover of described elastic component, described elastic component is provided with the compressing member suppressed on described bearing (ball) cover.
Bearing unit in a kind of transmission shaft of wind driven generator as above, is characterized in that: described elastic component is butterfly spring.
Bearing unit in a kind of transmission shaft of wind driven generator as above, is characterized in that: be provided with in the accommodating cover of described elastic component by described compressing member and elastic component axial compression screw.
Bearing unit in a kind of transmission shaft of wind driven generator as above, it is characterized in that: described transmission shaft is set with one end and is axially pressed against on described transmission shaft, the other end is pressed against the first inner shield ring on described bearing inner race, with the second inner shield ring being pressed against the described bearing inner race the other end, and by the locking nut of the second described inner shield ring, bearing inner race, the first inner shield ring axial compression.
Bearing unit in a kind of transmission shaft of wind driven generator as above, is characterized in that: the second described inner shield ring excircle is provided with two circle grooves, is provided with the seal ring clamped by described bearing (ball) cover in described groove.
Beneficial effect of the present invention has: transmission shaft is with dynamic bearing away from bearing (ball) cover when heat expansion is extended, and elastic device recovers deformation, and axial force can be passed to bearing (ball) cover by elastic device by bearing outer ring, receiving portion can divide axial force; Thrust ring is provided with multiple butterfly spring, makes elastic device elastic force comparatively large, can bear larger axial force, improve working life.
[accompanying drawing explanation]
Fig. 1 is main sectional view of the present invention;
Fig. 2 is the I portion enlarged view of Fig. 1;
Fig. 3 is component diagram of the present invention;
Fig. 4 is using state reference drawing of the present invention.
[embodiment]
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As shown in Figure 1 to Figure 3, bearing unit in a kind of transmission shaft of wind driven generator, comprise the bearing support 1 be fixed on pedestal, be provided with in bearing support 1 can with transmission shaft 3 move axially bearing 2, bearing 2 can be biserial garden cone roller selfaligning bearing, and bearing support 1 and bearing 2 are Spielpassung, bearing 2 and transmission shaft 3 interference fit, such transmission shaft 3 is flexible when expanding with heat and contract with cold, and dynamic bearing 2 will be with to move axially relative to bearing support 1.Transmission shaft 3 being set with one end is axially pressed against on transmission shaft 3, the other end is pressed against the first inner shield ring 6 on bearing 2 inner ring, with the second inner shield ring 7 being pressed against the described bearing 2 inner ring the other end, and by the locking nut 8 of the second inner shield ring 7, bearing 2 inner ring, the first inner shield ring 6 axial compression, can prevent bearing 2 from sliding relative to transmission shaft 3 like this.Second inner shield ring 7 excircle is provided with two circle grooves 71, is provided with the seal ring 72 clamped by bearing (ball) cover 4 in groove 71.Bearing support 1 side is provided with bearing (ball) cover 4, elastic device 5 is provided with between the outer ring of bearing 2 and bearing (ball) cover 4, elastic device 5 comprises the thrust ring 51 being located at side, bearing 2 outer ring, thrust ring 51 end face is provided with multiple Flexible element 52, Flexible element 52 comprises the accommodating cover 56 of elastic component be located on thrust ring 51 end face, elastic component 53 is provided with in the accommodating cover 56 of elastic component, elastic component 53 can be butterfly spring, elastic component 53 is provided with the compressing member 54 suppressed on bearing (ball) cover 4, be provided with in the accommodating cover 56 of elastic component by compressing member 54 and elastic component 53 axial compression screw 55.By many group butterfly springs, the axial force of bearing 2 outer ring is reached bearing (ball) cover 4 like this, bearing (ball) cover 4 is fixed on pedestal.
During use as shown in Figure 4, this bearing unit is arranged on the bigger diameter end of transmission shaft 2, namely be blade of wind-driven generator end, bearing (ball) cover 4 is arranged on the side away from blade, rigid bearing 9 is then fixedly mounted on other one end of transmission shaft 2, namely be one end of uni-drive gear box, produce large wind during rotation due to blade, make bearing bear larger axis to power.Because the outer ring of bearing 2 is by elastic device 5, axial force is passed to bearing (ball) cover 4, bearing (ball) cover 4 is fixed on bearing support 1, bearing support 1 is fixed on pedestal, and therefore axial force can be given to pedestal, receiving portion divides axial force, alleviate bearing burdens of rigid bearing 9, improve working life.
Claims (5)
1. the bearing unit in a transmission shaft of wind driven generator, comprise the bearing support (1) be fixed on pedestal, be provided with in described bearing support (1) can with transmission shaft (3) move axially bearing (2), described bearing support (1) side is provided with bearing (ball) cover (4), it is characterized in that: between the outer ring of described bearing (2) and bearing (ball) cover (4), be provided with elastic device (5), described elastic device (5) comprises the thrust ring (51) being located at described bearing (2) side, outer ring, described thrust ring (51) end face is provided with multiple Flexible element (52), described Flexible element (52) comprises the accommodating cover of elastic component (56) be located on described thrust ring (51) end face, elastic component (53) is provided with in the accommodating cover of described elastic component (56), described elastic component (53) is provided with the compressing member (54) suppressed on described bearing (ball) cover (4).
2. the bearing unit in a kind of transmission shaft of wind driven generator according to claim 1, is characterized in that: described elastic component (53) is belleville spring.
3. the bearing unit in a kind of transmission shaft of wind driven generator according to claim 1, is characterized in that: be provided with in the accommodating cover of described elastic component (56) by described compressing member (54) and elastic component (53) axial compression screw (55).
4. the bearing unit in a kind of transmission shaft of wind driven generator according to claim 1, it is characterized in that: described transmission shaft (3) is set with one end and is axially pressed against on described transmission shaft (3), the other end is pressed against the first inner shield ring (6) on described bearing (2) inner ring, with the second inner shield ring (7) being pressed against described bearing (2) the inner ring the other end, and by the locking nut (8) of described the second inner shield ring (7), bearing (2) inner ring, the first inner shield ring (6) axial compression.
5. the bearing unit in a kind of transmission shaft of wind driven generator according to claim 4, it is characterized in that: described the second inner shield ring (7) excircle is provided with two circle grooves (71), in described groove (71), be provided with the seal ring (72) clamped by described bearing (ball) cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210288946.3A CN102808857B (en) | 2012-08-14 | 2012-08-14 | Bearing assembly on transmission shaft of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210288946.3A CN102808857B (en) | 2012-08-14 | 2012-08-14 | Bearing assembly on transmission shaft of wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102808857A CN102808857A (en) | 2012-12-05 |
| CN102808857B true CN102808857B (en) | 2015-05-20 |
Family
ID=47232675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210288946.3A Active CN102808857B (en) | 2012-08-14 | 2012-08-14 | Bearing assembly on transmission shaft of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102808857B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295749B (en) * | 2014-09-29 | 2016-09-21 | 内蒙古久和能源装备有限公司 | A kind of associated sealing arrangement for bearings |
| CN108506377A (en) * | 2017-05-23 | 2018-09-07 | 太仓市伦文机械有限公司 | A kind of brake apparatus |
| DE102018004793A1 (en) * | 2017-12-20 | 2019-06-27 | Senvion Gmbh | Wind turbine with power train |
| CN113931935A (en) * | 2021-11-22 | 2022-01-14 | 北京高孚动力科技有限公司 | Magnetic suspension bearing elastic damping protection bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227755A (en) * | 1977-10-24 | 1980-10-14 | Stal Refrigeration Ab | Bearing arrangement for shaft of rotary compressor |
| DE10300952A1 (en) * | 2003-01-13 | 2004-07-22 | Siemens Ag | Electric machine, especially converter-fed slip-ring rotor motor for wind-power generator, uses insulating material sleeve for shaft carrying bearing assembly |
| CN1947323A (en) * | 2004-04-29 | 2007-04-11 | 西门子公司 | Electrical machine and its bearings |
| CN202971606U (en) * | 2012-08-14 | 2013-06-05 | 广东明阳风电产业集团有限公司 | Novel bearing assembly on driving shaft of wind driven generator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58196320A (en) * | 1982-05-13 | 1983-11-15 | Toshiba Corp | Bearing creep preventive device |
| JP2577842Y2 (en) * | 1992-05-08 | 1998-08-06 | 光洋精工株式会社 | Constant preload double row tapered roller bearing device |
| JP2006162011A (en) * | 2004-12-09 | 2006-06-22 | Nsk Ltd | Rolling bearing with pre-load mechanism |
-
2012
- 2012-08-14 CN CN201210288946.3A patent/CN102808857B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227755A (en) * | 1977-10-24 | 1980-10-14 | Stal Refrigeration Ab | Bearing arrangement for shaft of rotary compressor |
| DE10300952A1 (en) * | 2003-01-13 | 2004-07-22 | Siemens Ag | Electric machine, especially converter-fed slip-ring rotor motor for wind-power generator, uses insulating material sleeve for shaft carrying bearing assembly |
| CN1947323A (en) * | 2004-04-29 | 2007-04-11 | 西门子公司 | Electrical machine and its bearings |
| CN202971606U (en) * | 2012-08-14 | 2013-06-05 | 广东明阳风电产业集团有限公司 | Novel bearing assembly on driving shaft of wind driven generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102808857A (en) | 2012-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102808857B (en) | Bearing assembly on transmission shaft of wind driven generator | |
| CN205231921U (en) | Dead compressor axle sleeve structure of anti -sticking | |
| CN202971606U (en) | Novel bearing assembly on driving shaft of wind driven generator | |
| CN109099128A (en) | A kind of bearing screw driven system | |
| CN103441608A (en) | Electric cylinder anti-rotation mechanism | |
| CN103047280A (en) | Novel rolling bearing structure | |
| CN103532290B (en) | A kind of ball bearing motor of automatic aligning | |
| CN201663508U (en) | High-speed precise electric main shaft | |
| CN203067539U (en) | Novel rolling bearing structure | |
| CN103511550A (en) | Damper for high-speed oilless bearing rotor system | |
| CN204327494U (en) | A kind of Eddy refrigeration compressor capable of preventing Self-rotation structure | |
| CN103401344B (en) | A kind of submersible motor of quick detachable angular contact ball bearing | |
| CN211778534U (en) | Combined bearing type rotary driver | |
| RU60647U1 (en) | SCREW COMPRESSOR | |
| CN201774356U (en) | Constant pressure preloading device for main shaft bearings of high-speed built-in motor | |
| CN102635495A (en) | Automatic pitch-adjusting wind wheel | |
| CN202576711U (en) | Shock-absorbing bushing structure of rotor spinning machine | |
| CN102797752B (en) | Multi-blade oil-lubricated foil bearing supported by horizontal springs | |
| CN206195521U (en) | Permanent magnet motor bearing room structure | |
| CN216540869U (en) | Aerostatic ceramic ball composite bearing electric spindle | |
| CN203434786U (en) | Bearing structure of motor | |
| CN204835888U (en) | Step -by -step linear electric motor is born to high axial | |
| CN217874033U (en) | Axially supported ball screw | |
| CN221277936U (en) | Axial unloading device for bearing at fixed end of wind generating set | |
| US10495066B2 (en) | Joint structure and wind power generation 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 | ||
| CP03 | Change of name, title or address |
Address after: 528437 Torch Road, Torch Development Zone, Guangdong, Zhongshan, No. 22 Patentee after: Ming Yang wisdom Energy Group AG Address before: 528400 Torch Industrial Zone, Ming Yang Industrial Zone, Torch Development Zone, Guangdong, Zhongshan, 22 Patentee before: Guangdong Mingyang Wind Power Group Co., Ltd. |
|
| CP03 | Change of name, title or address |