CN109386434B - Compact semi-direct-drive wind power gear box multi-shaft power split transmission structure - Google Patents
Compact semi-direct-drive wind power gear box multi-shaft power split transmission structure Download PDFInfo
- Publication number
- CN109386434B CN109386434B CN201811396321.2A CN201811396321A CN109386434B CN 109386434 B CN109386434 B CN 109386434B CN 201811396321 A CN201811396321 A CN 201811396321A CN 109386434 B CN109386434 B CN 109386434B
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- Prior art keywords
- gear
- planetary gear
- shaft
- gears
- generator
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 238000005452 bending Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
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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
Abstract
The invention discloses a compact semi-direct-drive wind power gear box multi-shaft power split transmission structure which comprises a main bearing and an NW planetary gear train, wherein the main bearing is arranged in a gear box, the NW planetary gear train is provided with a hub side planetary gear and a generator side planetary gear, the hub side planetary gear and the generator side planetary gear are integrated duplex planetary gears, a set of planetary gear bearing is shared, a planetary carrier, an outer ring of the main bearing and a gear box shell are fixed together, an inner ring of the main bearing is meshed with an inner gear ring, input power is transmitted into the hub side planetary gear by the inner gear ring, two generator side planetary gears are meshed with a multi-shaft gear, power is input by the two generator side planetary gears, and the power and the rotating speed are transmitted to a multi-shaft generator after the multi-shaft gears are converged and output. The invention adopts an NW planetary gear and utilizes a multi-shaft power split transmission mode, fully utilizes radial position space, decomposes an oversized generator into a plurality of smaller generators, and uniformly arranges the same radius around the rotation center line of the unit.
Description
Technical Field
The invention relates to the technical field of wind power gear box transmission, in particular to a compact semi-direct-drive wind power gear box multi-shaft power split transmission structure.
Background
As shown in FIG. 1, the system is a compact semi-direct drive system of a traditional wind generating set, and shares a two-stage planetary transmission device, wherein one-stage planetary transmission device is positioned in an inner ring of a main bearing, the inner ring of the main bearing rotates along with a hub, an outer ring of the main bearing is fixed, the outer ring is connected with a tower through a generator shell and an elbow, and the speed ratio is about 25. When high power products are developed, such as 10MW or more, the difficulty in designing and manufacturing the generator increases due to the increase in the number of blades and the decrease in the rotational speed, the size of the generator becomes excessively large, and the cost increases. In the figure, 01 is a main bearing, 02 is a primary planetary transmission, 03 is a secondary planetary transmission, 04 is a hub, 05 is a generator shell, 06 is a spline, and 07 is an output sun gear.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides a compact semi-direct-drive wind power gear box multi-shaft power split transmission structure, which changes the transmission form of an original transmission gear structure, adopts an NW planetary gear and utilizes the multi-shaft power split transmission form, fully utilizes radial position space, decomposes an oversized generator into a plurality of smaller generators, and uniformly arranges the same radius around the rotation center line of a unit.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the utility model provides a compact semi-direct drive wind-powered electricity generation gear box multiaxis power reposition of redundant personnel transmission structure, includes main bearing and NW planetary gear train that adopts single biserial flange formula main bearing structure, the main bearing is built-in the gear box for bear the power and the moment load that wind wheel transmitted, reduce the impact of alternating load to the gear box, NW planetary gear train is equipped with the wheel hub side planetary gear that is close to the wheel hub side and is close to the generator side planetary gear, wheel hub side planetary gear train and generator side planetary gear are the duplex planet wheel that integrates together, share a set of planet wheel bearing, the planet carrier of NW planetary gear train is together with the outer lane of main bearing and gear box shell to be located between wheel hub side planetary gear and generator side planetary gear, the inner circle of main bearing meshes with the ring gear of NW planetary gear train, the ring gear meshes with wheel hub side planetary gear, and the input power is gone into wheel hub side planetary gear by the ring gear, and two generator side planetary gear and a multiaxis gear meshes, power and rotational speed are transmitted to a multiaxis power generator after multiaxis gear joins output, realizes parallel shaft power reposition of redundant power output, and the quantity of multiaxis power generator is the multiaxis center line number of the most is evenly arranged around the axis of the multiaxis center line.
Further, the NW planetary gear train adopts the flexible pin shaft to carry uniformly, the flexible pin shaft is connected with the planet carrier through the planetary gear bearing, the planet gears are in interference fit with the flexible pin shaft, when tangential force of the inner gear ring or the sun gear is applied to the planet gears, the angle degree of winding caused by bending of the flexible pin shaft on the planet carrier can be counteracted by the angle degree of winding caused by bending of the planet gears at the other end of the flexible pin shaft in the opposite direction, so that each planet gear floats in parallel, and further, the load is distributed among each planet gear evenly.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. and a single double-row flange type main bearing structure is adopted, so that the structure is compact.
2. The NW planetary transmission structure is adopted, the planetary carrier is fixed, and the structure can realize multi-axis power split transmission.
3. The flexible pin shaft structure is adopted to enable the planet gears to float and evenly load, so that the loading of the multi-planet gear train is more uniform, the transmission is more stable, and the service life is effectively prolonged.
4. The ultra-large generator can be decomposed into a plurality of smaller low-power generators, the design and manufacturing difficulty is reduced, the cost is saved, and the size of the whole machine is reduced.
Drawings
Fig. 1 is a schematic diagram of a transmission structure of a conventional half-direct-drive wind power gearbox.
FIG. 2 is a schematic diagram of a multi-axis power split transmission structure of a compact semi-direct drive wind turbine gearbox.
FIG. 3 is a second schematic diagram of a multi-axis power split transmission structure of a compact semi-direct drive wind turbine gearbox.
Detailed Description
The invention will be further illustrated with reference to specific examples.
Referring to fig. 2 and 3, the multi-shaft power split transmission structure of the compact semi-direct-drive wind power gearbox provided by this embodiment includes main bearings 1 and NW planetary gear trains adopting a single double-row flange main bearing structure, the main bearings 1 are internally arranged in the gearbox and are used for bearing loads such as force and bending moment transmitted by wind wheels and reducing impact of alternating loads on the gearbox, the NW planetary gear trains are provided with hub side planetary gears 2 close to the hub side and generator side planetary gears 3 close to the generator side, the hub side planetary gears 2 and the generator side planetary gears 3 are integrated duplex planetary gears, a set of planetary gear bearings 4 is shared, a planet carrier 5 of the NW planetary gear trains is fixed with an outer ring of the main bearings 1 and a gearbox housing 6 and is located between the hub side planetary gears 2 and the generator side planetary gears 3, an inner ring 7 of the main bearings 1 is meshed with an inner gear ring 7 of the NW planetary gear train, input power is transmitted into the hub side planetary gears 2 by the inner gear ring 7, two side planetary gears 3 are meshed with one multi-shaft gear 8, the number of the multi-shaft power split transmission is realized by the two generators 3, and the number of the multi-shaft power split transmission is equal to the number of the multi-shaft power split transmission generators 9.
In addition, the NW planetary gear train adopts the flexible pin shaft 10 to carry out uniform load, the flexible pin shaft 10 is connected with the planet carrier 5 through the planet wheel bearing 4, the hub side planet wheel 2 and the generator side planet wheel 3 are in interference fit with the flexible pin shaft 10, when tangential force of an annular gear or a sun wheel is applied to the planet wheels, the angle degree caused by bending of the flexible pin shaft on the planet carrier can be offset by the angle degree caused by bending of the planet wheels at the other end of the flexible pin shaft in the opposite direction, so that each planet wheel floats in parallel, and further, the load is evenly distributed among each planet wheel.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so variations in shape and principles of the present invention should be covered.
Claims (2)
1. A compact semi-direct-drive wind power gear box multi-shaft power split transmission structure is characterized in that: the main bearing is arranged in a gear box and is used for bearing force and bending moment load transmitted by a wind wheel and reducing impact of alternating load on the gear box, the NW planetary gear train is provided with a hub side planetary gear close to a hub side and a generator side planetary gear close to a generator side, the hub side planetary gear and the generator side planetary gear are double planetary gears integrated together, a set of planetary gear bearings is shared, a planet carrier of the NW planetary gear train is fixed with an outer ring of the main bearing and a gear box shell and is positioned between the hub side planetary gear and the generator side planetary gear, an inner ring of the main bearing is meshed with an inner gear ring of the NW planetary gear train, the inner gear ring is meshed with the hub side planetary gear, input power is transmitted into the hub side planetary gear by the inner gear ring, the two generator side planetary gears are meshed with a multi-shaft gear, the power is input by the two generator side planetary gears, the power and the rotating speed are transmitted to the multi-shaft generator after the multi-shaft gears are converged and output, the number of the parallel shaft power split output is at most, and the number of the multi-shaft planetary gears are uniformly distributed around the wind turbine with equal radius.
2. The compact semi-direct drive wind power gearbox multi-shaft power split transmission structure according to claim 1, wherein: the NW planetary gear train is uniformly loaded by adopting flexible pin shafts, the flexible pin shafts are connected with a planet carrier through planetary gear bearings, the planet gears are in interference fit with the flexible pin shafts, and when tangential force of an inner gear ring or a sun gear is applied to the planet gears, the angle degree of winding caused by bending of the flexible pin shafts on the planet carrier can be counteracted by the angle degree of winding caused by bending of the planet gears at the other ends of the flexible pin shafts in the opposite direction, so that each planet gear floats in parallel, and further, the load is distributed among each planet gear in an average mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396321.2A CN109386434B (en) | 2018-11-22 | 2018-11-22 | Compact semi-direct-drive wind power gear box multi-shaft power split transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396321.2A CN109386434B (en) | 2018-11-22 | 2018-11-22 | Compact semi-direct-drive wind power gear box multi-shaft power split transmission structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109386434A CN109386434A (en) | 2019-02-26 |
| CN109386434B true CN109386434B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811396321.2A Active CN109386434B (en) | 2018-11-22 | 2018-11-22 | Compact semi-direct-drive wind power gear box multi-shaft power split transmission structure |
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| Country | Link |
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| CN (1) | CN109386434B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112989514B (en) * | 2021-03-05 | 2023-03-14 | 明阳智慧能源集团股份公司 | Uneven load coefficient checking tool for transmission gear of wind driven generator |
| CN113007028B (en) * | 2021-03-23 | 2022-05-20 | 上海电气风电集团股份有限公司 | Wind generating set |
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|---|---|---|---|---|
| CN101498349A (en) * | 2008-02-03 | 2009-08-05 | 上海驰风机电科技有限公司 | Increase gear for gear type power transmission and wind motor |
| CN101699065A (en) * | 2009-10-10 | 2010-04-28 | 宜兴市华泰国际集团工业有限公司 | Speed-increasing gearbox of wind driven generator |
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| CN102562481A (en) * | 2011-12-16 | 2012-07-11 | 三一电气有限责任公司 | Speed increasing device and wind generating set |
| CN103791033A (en) * | 2012-10-30 | 2014-05-14 | 吴小杰 | Duplex double-arm type wind power speed increasing gearbox with bearings lubricated by grease |
| CN104776202A (en) * | 2015-04-07 | 2015-07-15 | 大连理工大学 | Power flow division type acceleration gearbox for 6-8MW semi-direct driving wind generation set |
| CN105626784A (en) * | 2016-02-16 | 2016-06-01 | 华东交通大学 | Compound uniform-load wind power gearbox |
| CN205806337U (en) * | 2016-07-01 | 2016-12-14 | 三一重型能源装备有限公司 | Wind power speed-increasing gearbox and wind power generating set |
| CN108350864A (en) * | 2015-09-23 | 2018-07-31 | 科德里夫股份公司 | Dual planetary gear structure and driving architecture |
| CN209398543U (en) * | 2018-11-22 | 2019-09-17 | 明阳智慧能源集团股份公司 | A kind of compact semi-direct driving wind electrical gearbox multiaxis power dividing drive mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060264292A1 (en) * | 2003-03-25 | 2006-11-23 | Klaus Plath | Gearbox device |
-
2018
- 2018-11-22 CN CN201811396321.2A patent/CN109386434B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498349A (en) * | 2008-02-03 | 2009-08-05 | 上海驰风机电科技有限公司 | Increase gear for gear type power transmission and wind motor |
| CN101699065A (en) * | 2009-10-10 | 2010-04-28 | 宜兴市华泰国际集团工业有限公司 | Speed-increasing gearbox of wind driven generator |
| CN102146892A (en) * | 2011-02-17 | 2011-08-10 | 国电联合动力技术有限公司 | Variable-speed ratio wind power speed increasing box |
| CN102562481A (en) * | 2011-12-16 | 2012-07-11 | 三一电气有限责任公司 | Speed increasing device and wind generating set |
| CN103791033A (en) * | 2012-10-30 | 2014-05-14 | 吴小杰 | Duplex double-arm type wind power speed increasing gearbox with bearings lubricated by grease |
| CN104776202A (en) * | 2015-04-07 | 2015-07-15 | 大连理工大学 | Power flow division type acceleration gearbox for 6-8MW semi-direct driving wind generation set |
| CN108350864A (en) * | 2015-09-23 | 2018-07-31 | 科德里夫股份公司 | Dual planetary gear structure and driving architecture |
| CN105626784A (en) * | 2016-02-16 | 2016-06-01 | 华东交通大学 | Compound uniform-load wind power gearbox |
| CN205806337U (en) * | 2016-07-01 | 2016-12-14 | 三一重型能源装备有限公司 | Wind power speed-increasing gearbox and wind power generating set |
| CN209398543U (en) * | 2018-11-22 | 2019-09-17 | 明阳智慧能源集团股份公司 | A kind of compact semi-direct driving wind electrical gearbox multiaxis power dividing drive mechanism |
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| CN109386434A (en) | 2019-02-26 |
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