CN219672778U - Yaw bearing assembly of wind driven generator and wind driven generator - Google Patents
Yaw bearing assembly of wind driven generator and wind driven generator Download PDFInfo
- Publication number
- CN219672778U CN219672778U CN202321228882.8U CN202321228882U CN219672778U CN 219672778 U CN219672778 U CN 219672778U CN 202321228882 U CN202321228882 U CN 202321228882U CN 219672778 U CN219672778 U CN 219672778U
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- peripheral surface
- ring
- inner ring
- bearing assembly
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 13
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Classifications
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- 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
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- Wind Motors (AREA)
Abstract
The utility model relates to the technical field of wind power generation, in particular to a yaw bearing assembly of a wind power generator and the wind power generator. The yaw bearing assembly of the wind driven generator comprises a cabin, a tower barrel and a full ball bearing; the full-complement ball bearing comprises a bearing inner ring, a bearing outer ring and a plurality of steel balls, wherein the bearing inner ring and the bearing outer ring are coaxial, the outer peripheral surface of the bearing inner ring is spaced from the inner peripheral surface of the bearing outer ring, and the plurality of steel balls are accommodated between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring in a rolling way; one of the bearing inner ring and the bearing outer ring is connected with the engine room, and the other one of the bearing inner ring and the bearing outer ring is connected with the tower. The yaw bearing assembly of the wind driven generator is simple in structure, can improve bearing capacity and use stability, and meanwhile, avoids the condition that shutdown maintenance is required due to failure or damage of the retainer, and further can guarantee normal operation of the wind turbine generator.
Description
Technical Field
The utility model relates to the technical field of wind power generation, in particular to a yaw bearing assembly of a wind power generator and the wind power generator.
Background
The wind turbine generator yaw system comprises a cabin, a yaw bearing, a brake disc and a tower; the yaw bearing mainly comprises a ferrule, a steel ball, a retainer and a sealing ring, and in the use process, structural failure or damage of the retainer easily occurs, so that a yaw system of the wind turbine generator is required to be stopped and maintained, and the working efficiency of the wind turbine generator is affected.
Disclosure of Invention
The utility model aims to provide a yaw bearing assembly of a wind driven generator and the wind driven generator, which are simple in structure, and capable of improving bearing capacity and use stability, avoiding the condition that shutdown maintenance is required due to failure or damage of a retainer, and further guaranteeing normal operation of a wind turbine generator.
Embodiments of the present utility model are implemented as follows:
in a first aspect, the present utility model provides a wind turbine yaw bearing assembly comprising a nacelle, a tower and a full ball bearing;
the full-complement ball bearing comprises a bearing inner ring, a bearing outer ring and a plurality of steel balls, wherein the bearing inner ring and the bearing outer ring are coaxial, the outer peripheral surface of the bearing inner ring is spaced from the inner peripheral surface of the bearing outer ring, and the plurality of steel balls are accommodated between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring in a rolling way;
one of the bearing inner ring and the bearing outer ring is connected with the engine room, and the other one of the bearing inner ring and the bearing outer ring is connected with the tower.
In an alternative embodiment, the outer peripheral surface of the bearing inner ring is provided with at least one first groove, the inner peripheral surface of the bearing outer ring is provided with at least one second groove, the first grooves and the second grooves are in one-to-one correspondence, and the first grooves and the corresponding second grooves jointly form a rollaway nest for accommodating a plurality of steel balls.
In an alternative embodiment, the outer peripheral surface of the bearing inner ring is provided with two first grooves, the inner peripheral surface of the bearing outer ring is provided with two second grooves, and the two first grooves are respectively in one-to-one correspondence with the two second grooves and jointly form two raceways.
In an alternative embodiment, the first groove and the second groove are hemispherical grooves which are matched with the peripheral surface of the steel ball.
In an alternative embodiment, the two raceways are parallel.
In an alternative embodiment, the two raceways are spaced apart along the axis of the full ball bearing.
In an alternative embodiment, the yaw bearing assembly of the wind driven generator further comprises a first sealing ring, wherein the first sealing ring is arranged between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring, and is positioned at the lower end of the bearing inner ring along the axial direction of the full ball bearing.
In an alternative embodiment, the yaw bearing assembly of the wind driven generator further comprises a second sealing ring, wherein the second sealing ring is arranged between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring, and is respectively positioned at the upper end of the bearing inner ring along the axial direction of the full ball bearing.
In an alternative embodiment, the wind turbine yaw bearing assembly further comprises a brake disc, the brake disc being connected to the tower.
In a second aspect, the utility model provides a wind turbine comprising a wind turbine yaw bearing assembly as described above.
The beneficial effects of the embodiment of the utility model include:
the yaw bearing assembly of the wind driven generator comprises a cabin, a tower barrel and a full ball bearing; the full-complement ball bearing comprises a bearing inner ring, a bearing outer ring and a plurality of steel balls, wherein the bearing inner ring and the bearing outer ring are coaxial, the outer peripheral surface of the bearing inner ring is spaced from the inner peripheral surface of the bearing outer ring, and the plurality of steel balls are accommodated between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring in a rolling way; one of the bearing inner ring and the bearing outer ring is connected with the engine room, and the other one of the bearing inner ring and the bearing outer ring is connected with the tower.
Compared with the scheme that the four-point angular contact ball bearing is adopted in the prior art, the yaw bearing assembly of the wind driven generator can improve the bearing capacity and the use stability through adopting the full-load ball bearing, and meanwhile, the retainer is prevented from being used in the bearing, so that the condition that shutdown maintenance is required due to failure or damage of the retainer can be avoided, and further the normal operation of the wind driven generator can be guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a wind turbine yaw bearing assembly according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a full ball bearing according to an embodiment of the present utility model.
200-wind generator yaw bearing assembly; 210-a nacelle; 220-tower; 230-full ball bearing; 231-bearing inner ring; 232-bearing outer ring; 233-steel ball; 234-first groove; 235-a second groove; 236-a first seal ring; 237-a second sealing ring; 240-brake disc.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 and 2, the present embodiment provides a yaw bearing assembly 200 of a wind turbine, the yaw bearing assembly 200 of a wind turbine includes a nacelle 210, a tower 220, and a full ball bearing 230;
the full ball bearing 230 comprises a bearing inner ring 231, a bearing outer ring 232 and a plurality of steel balls 233, wherein the bearing inner ring 231 and the bearing outer ring 232 are coaxial, the outer circumferential surface of the bearing inner ring 231 is spaced from the inner circumferential surface of the bearing outer ring 232, and the plurality of steel balls 233 are accommodated between the outer circumferential surface of the bearing inner ring 231 and the inner circumferential surface of the bearing outer ring 232 in a rolling manner;
one of the bearing inner race 231 and the bearing outer race 232 is connected to the nacelle 210, and the other of the bearing inner race 231 and the bearing outer race 232 is connected to the tower 220.
Referring to fig. 1 and 2, the yaw bearing assembly 200 of the wind turbine works according to the following principle:
the wind turbine yaw bearing assembly 200 includes a nacelle 210, a tower 220, and a full ball bearing 230; one of the inner race 231 and the outer race 232 of the full ball bearing 230 is connected with the nacelle 210, and the other one of the inner race 231 and the outer race 232 is connected with the tower 220, so that the nacelle 210 and the tower 220 can be rotatably connected by the arrangement, and yaw can be performed under the driving action of yaw driving;
in this process, because the manner of rotating the tower 220 and the nacelle 210 by fully installing the ball bearing 230 is adopted, compared with the scheme of adopting a four-point angular contact ball bearing in the prior art, the arrangement of the retainer in the bearing structure can be reduced, and thus, the condition that the machine set needs to be shut down and maintained due to failure or damage of the retainer in the use process can be avoided; in addition, the arrangement of the retainer in the bearing structure is reduced, so that the structure inside the bearing can be optimized, and the structural size of the unit can be reduced;
in summary, this aerogenerator driftage bearing assembly 200 can avoid using the holder in the bearing when improving bearing capacity and stability in use through adopting full-complement ball bearing 230, consequently can avoid appearing because of the condition that the holder inefficacy or damage and need carry out shut down maintenance, and then can ensure wind turbine generator system's normal operating.
Further, referring to fig. 1 and 2, in the present embodiment, when the ball bearing 230 is fully installed, at least one first groove 234 is provided on the outer circumferential surface of the inner ring 231, and at least one second groove 235 is provided on the inner circumferential surface of the outer ring 232; the first grooves 234 and the second grooves 235 are in one-to-one correspondence, so that a raceway for accommodating the plurality of steel balls 233 can be formed together by the first grooves 234 and the corresponding second grooves 235, and the tower 220 and the nacelle 210 can be rotationally connected by rolling the plurality of steel balls 233 in the raceway.
Based on the above-mentioned structural arrangement, when the full ball bearing 230 is arranged, in order to improve the carrying capacity and the use stability of the full ball bearing 230, two first grooves 234 are provided on the outer circumferential surface of the inner ring 231, two second grooves 235 are provided on the inner circumferential surface of the outer ring 232, and the two first grooves 234 are respectively in one-to-one correspondence with the two second grooves 235 and jointly form two raceways. Thus, the full ball bearing 230 includes two raceways, and a plurality of steel balls 233 are disposed in both raceways, and when the two raceways are disposed, the first groove 234 and the second groove 235 forming the raceways can be hemispherical grooves adapted to the outer circumferential surfaces of the steel balls 233; in addition, the two raceways are parallel and spaced apart along the axis of the full ball bearing 230.
Further, referring to fig. 1 and 2, in the present embodiment, in order to avoid leakage of grease between the outer peripheral surface of the bearing inner ring 231 and the inner peripheral surface of the bearing outer ring 232 during use, the yaw bearing assembly 200 further includes a first seal ring 236, where the first seal ring 236 is disposed between the outer peripheral surface of the bearing inner ring 231 and the inner peripheral surface of the bearing outer ring 232, and the first seal ring 236 is located at the lower end of the bearing inner ring 231 along the axial direction of the full ball bearing 230. That is, by providing the first seal ring 236 at the lower end of the full ball bearing 230, the leakage of grease between the outer peripheral surface of the bearing inner race 231 and the inner peripheral surface of the bearing outer race 232 from the lower end thereof by the action of gravity can be prevented;
similarly, the yaw bearing assembly 200 of the wind driven generator further includes a second sealing ring 237, the second sealing ring 237 is disposed between the outer peripheral surface of the bearing inner ring 231 and the inner peripheral surface of the bearing outer ring 232, and the second sealing rings 237 are respectively located at the upper end of the bearing inner ring 231 along the axial direction of the full ball bearing 230. That is, by providing the second seal 237 at the upper end of the full ball bearing 230, the grease between the outer peripheral surface of the bearing inner race 231 and the inner peripheral surface of the bearing outer race 232 can be prevented from leaking from the upper end thereof during the operation of the full ball bearing 230.
Further, referring to fig. 1 and 2, in the present embodiment, in order to apply a braking force to the yaw bearing assembly to limit the rotation of the yaw bearing assembly during the yaw process, the yaw bearing assembly 200 further includes a brake disc 240, and the brake disc 240 is connected to the tower 220.
In summary, referring to fig. 1 and 2, based on the above-mentioned yaw bearing assembly 200 of the wind turbine, the present utility model provides a wind turbine, which includes the above-mentioned yaw bearing assembly 200 of the wind turbine.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A wind-driven generator yaw bearing assembly, characterized in that:
the yaw bearing assembly of the wind driven generator comprises a cabin, a tower barrel and a full ball bearing;
the full ball bearing comprises a bearing inner ring, a bearing outer ring and a plurality of steel balls, wherein the bearing inner ring is coaxial with the bearing outer ring, the outer peripheral surface of the bearing inner ring is spaced from the inner peripheral surface of the bearing outer ring, and the plurality of steel balls are accommodated between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring in a rolling way;
one of the bearing inner ring and the bearing outer ring is connected with the engine room, and the other one of the bearing inner ring and the bearing outer ring is connected with the tower.
2. The wind turbine yaw bearing assembly of claim 1, wherein:
the outer peripheral surface of the bearing inner ring is provided with at least one first groove, the inner peripheral surface of the bearing outer ring is provided with at least one second groove, the first grooves and the second grooves are in one-to-one correspondence, and the first grooves and the corresponding second grooves jointly form a rollaway nest for accommodating a plurality of steel balls.
3. The wind turbine yaw bearing assembly of claim 2, wherein:
the outer peripheral surface of the bearing inner ring is provided with two first grooves, the inner peripheral surface of the bearing outer ring is provided with two second grooves, and the two first grooves are respectively in one-to-one correspondence with the two second grooves and jointly form two rollaway nest.
4. A wind turbine yaw bearing assembly according to claim 3, wherein:
the first groove and the second groove are hemispherical grooves which are matched with the outer peripheral surface of the steel ball.
5. A wind turbine yaw bearing assembly according to claim 3, wherein:
the two raceways are parallel.
6. The wind turbine yaw bearing assembly of claim 5, wherein:
and two raceways are arranged at intervals along the axial direction of the full ball bearing.
7. A wind turbine yaw bearing assembly according to any one of claims 1-6, wherein:
the yaw bearing assembly of the wind driven generator further comprises a first sealing ring, wherein the first sealing ring is arranged between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring, and is positioned at the lower end of the bearing inner ring along the axial direction of the full-complement ball bearing.
8. The wind turbine yaw bearing assembly of claim 7, wherein:
the yaw bearing assembly of the wind driven generator further comprises a second sealing ring, wherein the second sealing ring is arranged between the outer peripheral surface of the bearing inner ring and the inner peripheral surface of the bearing outer ring, and is positioned at the upper end of the bearing inner ring along the axial direction of the full-complement ball bearing.
9. A wind turbine yaw bearing assembly according to any one of claims 1-6, wherein:
the wind driven generator yaw bearing assembly further comprises a brake disc, and the brake disc is connected with the tower.
10. A wind power generator, characterized in that:
the wind turbine comprising a wind turbine yaw bearing assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321228882.8U CN219672778U (en) | 2023-05-19 | 2023-05-19 | Yaw bearing assembly of wind driven generator and wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321228882.8U CN219672778U (en) | 2023-05-19 | 2023-05-19 | Yaw bearing assembly of wind driven generator and wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219672778U true CN219672778U (en) | 2023-09-12 |
Family
ID=87920860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321228882.8U Active CN219672778U (en) | 2023-05-19 | 2023-05-19 | Yaw bearing assembly of wind driven generator and wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219672778U (en) |
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2023
- 2023-05-19 CN CN202321228882.8U patent/CN219672778U/en active Active
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