CN106594065B - Bearing and variable pitch bearing of wind generating set - Google Patents
Bearing and variable pitch bearing of wind generating set Download PDFInfo
- Publication number
- CN106594065B CN106594065B CN201611223325.1A CN201611223325A CN106594065B CN 106594065 B CN106594065 B CN 106594065B CN 201611223325 A CN201611223325 A CN 201611223325A CN 106594065 B CN106594065 B CN 106594065B
- Authority
- CN
- China
- Prior art keywords
- bearing
- outer ring
- inner ring
- hole
- mounting disc
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000004519 grease Substances 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
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
- 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
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- 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
- F16C2360/00—Engines or pumps
- F16C2360/31—Wind motors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a bearing. The bearing comprises an outer ring (1), an inner ring (2) and a plurality of mounting holes (3) which are respectively located in the outer ring (1) and the inner ring (2), wherein a through hole (4) is formed in at least one of the plurality of mounting holes (3) which are located in the outer ring (1) and/or the inner ring (2), and the through hole (4) is communicated with the mounting holes (3) and the inside of the bearing. The bearing according to the exemplary embodiment of the present invention may have improved rigidity and sealing, may prevent corrosion of the inner and outer ring mounting holes, and may alleviate a problem of grease leakage.
Description
Technical field
The invention belongs to field of bearings, in particular, being related to the pitch variable bearings for wind generator set blade variable pitch.
Background technique
The power of wind-driven generator is from blade.When wind speed is larger, to keep impeller rotation velocity and input power permanent
The fixed safe and stable operation to guarantee unit, needs to adjust blade angle.Blade is connect with pitch variable bearings, and passes through pitch axis
It holds rotation and realizes blade angle adjustment.Therefore, pitch variable bearings are the critical components of wind power generating set, and reliability is unit energy
The key factor of no safe and stable operation.
The pitch variable bearings of the wind power generating set of the prior art there are poor rigidity, Internal and external cycle mounting hole is perishable the problems such as,
Therefore pitch variable bearings are caused to be easily broken off.
Fig. 1 is the schematic cross sectional views in installation condition of the pitch variable bearings of the wind power generating set of the prior art.
Referring to Fig.1, the pitch variable bearings of the wind power generating set of the prior art may include outer ring 1 and inner ring 2.Outer ring 1 can
To be connect by bolt 9 with blade flange 7, inner ring 2 can be connect by bolt 9 with wheelboss flange 8.Fig. 1 is merely illustrative,
The outer ring 1 of pitch variable bearings and inner ring 2 can be connect with blade flange 7 or wheelboss flange 8.As shown in Figure 1, being placed in it in bolt 9
In mounting hole 3 at be easy to happen corrosion, and cause stress to be concentrated because of the formation of hot spot so that pitch variable bearings be easy it is disconnected
It splits.In general, the corrosion of pitch variable bearings is prevented using the method for the anticorrosion with painting corrosion material at mounting hole 3, but this method
Poor reliability is unable to satisfy the requirement that wind power generating set is up to 20 years.
Summary of the invention
An aspect of of the present present invention provides a kind of bearing with high reliability.
Another aspect provides a kind of pitch variable bearings of wind power generating set with high reliability.
The bearing of an exemplary embodiment of the present invention includes outer ring, inner ring and is located in outer ring and inner ring
Multiple mounting holes are provided with through-hole at least one of the multiple mounting hole being located in outer ring and/or inner ring place, described
Through-hole is connected to mounting hole and Bearing inner.
Outer ring sealing mounting disc has can be set in an exemplary embodiment of the present invention on a surface of outer ring.
Inner ring sealing mounting disc has can be set in an exemplary embodiment of the present invention on a surface of inner ring.
Optionally, the inner ring sealing mounting disc can be set on the surface opposite with the setting outer ring sealing surface of mounting disc of inner ring
On.
An exemplary embodiment of the present invention can be set on a surface of outer ring and/or a surface of inner ring
It is equipped with stopping-off piece, through-hole can be located in stopping-off piece.
It is close that outer ring has can be set in the side opposite with the stopping-off piece on outer ring in an exemplary embodiment of the present invention
Seal mounting disc.
It is close that inner ring has can be set in the side opposite with the stopping-off piece on inner ring in an exemplary embodiment of the present invention
Seal mounting disc.
An exemplary embodiment of the present invention, can be set at each mounting hole there are two or it is more than two logical
Hole.
The pitch variable bearings of the wind power generating set of an exemplary embodiment of the present invention are the bearing.
At least one of following technical effect may be implemented: can in the bearing of an exemplary embodiment of the present invention
Prevent the corrosion of inside and outside circle mounting hole that the reliable of bearing thus can be improved so that stress is concentrated caused by avoiding because of corrosion
Property；Improve the rigidity and leakproofness of bearing；The problem of promoting the discharge of the waste oil of Bearing inner, alleviating grease leakage.
Detailed description of the invention
Fig. 1 is the schematic cross sectional views in installation condition of the pitch variable bearings of the wind power generating set of the prior art.
Fig. 2 is the schematic illustration of the bearing of an exemplary embodiment of the present invention.
Fig. 3 is the schematic cross sectional views in installation condition of the bearing of an exemplary embodiment of the present invention.
Fig. 4 is the schematic cross sectional views in installation condition of bearing in accordance with an alternative illustrative embodiment of the present invention.
Specific embodiment
Hereinafter, exemplary embodiment of the present invention is described in detail with reference to the accompanying drawings.
Fig. 2 is the schematic illustration of the bearing of an exemplary embodiment of the present invention.Fig. 3 is example according to the present invention
The schematic cross sectional views in installation condition of the bearing of property embodiment.Fig. 4 is in accordance with an alternative illustrative embodiment of the present invention
Bearing the schematic cross sectional views in installation condition.
Referring to Fig. 2 and Fig. 3, the bearing of an exemplary embodiment of the present invention includes outer ring 1, inner ring 2 and difference position
Multiple mounting holes 3 in outer ring 1 and inner ring 2, in the multiple mounting hole 3 being located in outer ring 1 and/or inner ring 2 extremely
Through-hole 4 is provided at one few, through-hole 4 is connected to mounting hole 3 and Bearing inner, so that the grease of Bearing inner can pass through through-hole 4
Flow into mounting hole 3.
Position, quantity, shape and the extending direction of through-hole 4 are not limited to situation as shown in the figure, and can be according to actual needs
It determines, for example, can be determined according to the mobility status of the grease of Bearing inner, as long as the grease of Bearing inner can be made successfully to lead to
It crosses through-hole 4 and flows into mounting hole 3.
An exemplary embodiment of the present invention, since outer ring 1 is usually easily broken off than inner ring 2, through-hole 4 can only be set
It sets at least one mounting hole 3 of outer ring 1, however it is without being limited thereto.Optionally, through-hole 4 can be provided only at least the one of inner ring 2
At a mounting hole 3.Alternatively, through-hole 4 not only may be provided at at least one mounting hole 3 of outer ring 1, but also may be provided at inner ring 2
At least one mounting hole 3 at.In addition, through-hole 4 can be provided only at the biggish mounting hole 3 of damage risk, exist without setting
At all mounting holes 3, so as to reduce cost.
A through-hole 4 is only set although showing in Fig. 3, but the invention is not restricted to this at each mounting hole 3.According to this
The exemplary embodiment of invention may be provided with the through-hole 4 of two or more, to can ensure that axis at each mounting hole 3
It holds internal grease and successfully flows into mounting hole 3.Optionally, described two or more than two through-hole 4, which can be set, to be installed
At different location on the length direction in hole 3.
In addition, approximate cylindrical shape can be had and can essentially perpendicularly prolong with mounting hole 3 by showing through-hole 4 in Fig. 3
It stretches, however it is without being limited thereto, and through-hole 4 can have any appropriate shape and can prolong on any suitable direction in Bearing inner
It stretches, for example, can be extended with curved shape.
Accoding to exemplary embodiment, outer ring sealing mounting disc 5 can be set on a surface of outer ring 1, outer ring is close
Sealing mounting disc 5 may include hole corresponding with mounting hole 3.When from the angle from section view, outer ring seals the width of mounting disc 5
The width of outer ring 1 can be greater than.
Accoding to exemplary embodiment, inner ring sealing mounting disc 6 can be set on a surface of inner ring 2, inner ring is close
Sealing mounting disc 6 may include hole corresponding with mounting hole 3.As shown in figure 3, inner ring sealing mounting disc 6 may be provided at inner ring 2 with
It is arranged on the opposite surface in surface of outer ring sealing mounting disc 5.When optionally, from the angle from section view, inner ring sealing peace
The width of sabot 6 can be greater than the width of inner ring 2.
Although Fig. 3 shows while being provided with outer ring sealing mounting disc 5 and inner ring sealing mounting disc 6, the present invention is not
It is limited to this.For example, the bearing of an exemplary embodiment of the present invention can only include outer ring sealing mounting disc 5 and inner ring sealing
One in mounting disc 6.
As shown in figure 3, during installing and using the bearing of an exemplary embodiment of the present invention, it can be by spiral shell
Bolt 9 penetrates outer ring 1 from the side for being provided with outer ring sealing mounting disc 5, and bolt 9 can be installed from inner ring sealing is provided with
The side of disk 6 penetrates inner ring 2, outer ring 1 is connect by bolt 9 with blade flange 7, and inner ring 2 can pass through spiral shell
Bolt 9 is connect with wheelboss flange 8.Fig. 3 is merely illustrative, and outer ring 1 can be connect by bolt 9 with wheelboss flange 8 and inner ring 2 can
To be connect by bolt 9 with blade flange 7 or outer ring 1 and inner ring 2 can be connect with blade flange 7 or wheelboss flange 8.Axis
Holding internal grease can be entered in the mounting hole 3 in outer ring 1 and/or inner ring 2 by through-hole 4, to can realize in mounting hole 3
Permanent anticorrosion, and can prevent from being concentrated by stress caused by corroding, therefore the reliability of bearing can be improved.In addition,
The problem of can promoting the discharge of the waste oil of Bearing inner by through-hole 4, grease leakage can be alleviated to a certain extent.In addition,
Mounting disc 6 is sealed due to being provided with outer ring sealing mounting disc 5 and/or inner ring, the leakproofness of bearing can be improved and increase bearing
Rigidity.
Fig. 4 is the schematic cross sectional views in installation condition of bearing in accordance with an alternative illustrative embodiment of the present invention.
For sake of simplicity, will omit with the redundancy description of content identical in Fig. 3, and concentrate on their difference.
Bearing in accordance with an alternative illustrative embodiment of the present invention includes outer ring 1, inner ring 2 and is located at 1 and of outer ring
Multiple mounting holes 3 in inner ring 2 are set at least one of the multiple mounting hole 3 being located in outer ring 1 and/or inner ring 2 place
It is equipped with through-hole 4, through-hole 4 is connected to mounting hole 3 and Bearing inner, on a surface of outer ring 1 and/or a surface of inner ring 2
It is provided with stopping-off piece 10, through-hole 4 is located in stopping-off piece 10.Due to being provided with stopping-off piece 10, it can prevent mounting hole 3 from corroding
The rigidity of bearing is further increased simultaneously.
It is provided with stopping-off piece 10 on outer ring 1 and inner ring 2 although showing in Fig. 4, but the invention is not restricted to this.Example
Such as, it only can be provided with stopping-off piece 10 on outer ring 1 or inner ring 2, and in the outer ring 1 or inner ring 2 for being not provided with stopping-off piece 10
Also through-hole 4 can be set at mounting hole 3.
Accoding to exemplary embodiment, outer ring sealing peace can be set in the side opposite with the stopping-off piece 10 on outer ring 1
Sabot 5.In addition, inner ring sealing mounting disc 6 can be set in the side opposite with the stopping-off piece 10 on inner ring 2.Optionally, interior
Circle sealing mounting disc 6 can be set on the surface opposite with the setting outer ring sealing surface of mounting disc 5 of inner ring 2.
In addition, as shown in figure 4, the width of stopping-off piece 10 can be greater than outer ring 1 or inner ring 2 when from the angle from section view
Width.In addition, stopping-off piece 10 may include hole corresponding with mounting hole 3.
It, can be with as shown in figure 4, during installing and using bearing in accordance with an alternative illustrative embodiment of the present invention
Bolt 9 is penetrated into the stopping-off piece 10 on outer ring 1 and outer ring 1 from the side for being provided with outer ring sealing mounting disc 5, and can be by spiral shell
Bolt 9 penetrates the stopping-off piece 10 on inner ring 2 and inner ring 2 from the side for being provided with inner ring sealing mounting disc 6, and outer ring 1 is led to
It crosses bolt 9 to connect with blade flange 7, and inner ring 2 can be connect by bolt 9 with wheelboss flange 8.It is set although Fig. 4 is shown
The side for being equipped with stopping-off piece 10 is connect with blade flange 7 or wheelboss flange 8, but is installing exemplary implementation according to the present invention
Example bearing when, can also by be provided with outer ring sealing mounting disc 5 or inner ring sealing mounting disc 6 side and blade flange 7 or
Wheelboss flange 8 connects.
The bearing of an exemplary embodiment of the present invention can have improved rigidity and leakproofness, can prevent inside and outside circle
The corrosion of mounting hole, and/or the problem of can be relieved grease leakage.
In addition, the pitch variable bearings of the wind power generating set of an exemplary embodiment of the present invention can be the bearing.
Although the present invention, those of ordinary skill in the art are specifically illustrated in and described referring to exemplary embodiment
It will be appreciated that in the case where not departing from the spirit and scope of the present invention as being defined by the claims and their equivalents, it can
The various change in formal and details is made herein.
Claims (9)
1. a kind of bearing, which is characterized in that including outer ring (1), inner ring (2) and be located at the outer ring (1) and described interior
Multiple mounting holes (3) in (2) are enclosed, in the multiple mounting hole (3) being located in the outer ring (1) and/or the inner ring (2)
At least one of place be provided with through-hole (4), the through-hole (4) is connected to the mounting hole (3) and the Bearing inner, wherein
The mounting hole (3) is not connected to by the through-hole (4) with Bearing outer.
2. bearing according to claim 1, which is characterized in that be provided with outer ring on a surface of the outer ring (1)
It seals mounting disc (5).
3. bearing according to claim 1, which is characterized in that be provided with inner ring on a surface of the inner ring (2)
It seals mounting disc (6).
4. bearing according to claim 2, which is characterized in that in the opposite with one surface of the inner ring (2)
Inner ring sealing mounting disc (6) is provided on surface.
5. bearing according to claim 1, which is characterized in that in a surface of the outer ring (1) and/or the inner ring
(2) it is provided with stopping-off piece (10) on a surface, the through-hole (4) is located in the stopping-off piece (10).
6. bearing according to claim 5, which is characterized in that with the stopping-off piece (10) phase on the outer ring (1)
Pair side be provided with outer ring sealing mounting disc (5).
7. bearing according to claim 5, which is characterized in that with the stopping-off piece (10) phase on the inner ring (2)
Pair side be provided with inner ring sealing mounting disc (6).
8. bearing according to claim 1, which is characterized in that there are two settings or more at each mounting hole (3)
In two through-holes (4).
9. a kind of pitch variable bearings of wind power generating set, the pitch variable bearings are axis described in any item of the claim 1 to 8
It holds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223325.1A CN106594065B (en) | 2016-12-27 | 2016-12-27 | Bearing and variable pitch bearing of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223325.1A CN106594065B (en) | 2016-12-27 | 2016-12-27 | Bearing and variable pitch bearing of wind generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594065A CN106594065A (en) | 2017-04-26 |
| CN106594065B true CN106594065B (en) | 2019-07-05 |
Family
ID=58602644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611223325.1A Active CN106594065B (en) | 2016-12-27 | 2016-12-27 | Bearing and variable pitch bearing of wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594065B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201990A (en) | 2017-07-28 | 2017-09-26 | 北京金风科创风电设备有限公司 | Become oar device and have this wind generating set who becomes oar device |
| US11454219B2 (en) | 2019-05-10 | 2022-09-27 | General Electric Company | Rotor assembly having a pitch bearing with a stiffener ring |
| CN114072591B (en) * | 2019-07-10 | 2024-03-08 | Nok株式会社 | Sealing device and sealing structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315313A (en) * | 2004-04-28 | 2005-11-10 | Ntn Corp | Sealing structure of bearing |
| CN101363472A (en) * | 2008-09-27 | 2009-02-11 | 包头市汇全稀土实业（集团）有限公司 | Main bearing for wind power generation |
| CN101858313A (en) * | 2010-06-10 | 2010-10-13 | 北京京冶轧机轴承制造有限公司 | Wind generating set and variable blade bearing thereof |
| CN201902291U (en) * | 2010-12-10 | 2011-07-20 | 江苏瑞特回转支承有限公司 | Variable-propeller bearing for wind power generation |
| CN202031976U (en) * | 2011-04-10 | 2011-11-09 | 马鞍山方圆回转支承股份有限公司 | Three-row ball type pivoting support |
| CN104169575A (en) * | 2012-02-07 | 2014-11-26 | Imo控股有限责任公司 | Roller bearing arrangement for mounting parts of a wind power plant and a wind power plant having a blade bearing designed in such a manner |
| CN205225591U (en) * | 2015-12-24 | 2016-05-11 | 东方电气风电有限公司 | Aerogenerator becomes reinforcing structure of oar bearing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825064B (en) * | 2010-05-11 | 2014-12-10 | 无锡风电设计研究院有限公司 | Wind generating set capable of fine adjusting attack angle of blade |
-
2016
- 2016-12-27 CN CN201611223325.1A patent/CN106594065B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005315313A (en) * | 2004-04-28 | 2005-11-10 | Ntn Corp | Sealing structure of bearing |
| CN101363472A (en) * | 2008-09-27 | 2009-02-11 | 包头市汇全稀土实业（集团）有限公司 | Main bearing for wind power generation |
| CN101858313A (en) * | 2010-06-10 | 2010-10-13 | 北京京冶轧机轴承制造有限公司 | Wind generating set and variable blade bearing thereof |
| CN201902291U (en) * | 2010-12-10 | 2011-07-20 | 江苏瑞特回转支承有限公司 | Variable-propeller bearing for wind power generation |
| CN202031976U (en) * | 2011-04-10 | 2011-11-09 | 马鞍山方圆回转支承股份有限公司 | Three-row ball type pivoting support |
| CN104169575A (en) * | 2012-02-07 | 2014-11-26 | Imo控股有限责任公司 | Roller bearing arrangement for mounting parts of a wind power plant and a wind power plant having a blade bearing designed in such a manner |
| CN205225591U (en) * | 2015-12-24 | 2016-05-11 | 东方电气风电有限公司 | Aerogenerator becomes reinforcing structure of oar bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106594065A (en) | 2017-04-26 |
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