WO2011089036A1 - Planetary gear unit with rotating ring gear - Google Patents
Planetary gear unit with rotating ring gear Download PDFInfo
- Publication number
- WO2011089036A1 WO2011089036A1 PCT/EP2011/050190 EP2011050190W WO2011089036A1 WO 2011089036 A1 WO2011089036 A1 WO 2011089036A1 EP 2011050190 W EP2011050190 W EP 2011050190W WO 2011089036 A1 WO2011089036 A1 WO 2011089036A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- planetary gear
- planet
- gear unit
- unit
- ring
- Prior art date
Links
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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/227—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts comprising two or more gearwheels in mesh with the same internally toothed wheel
-
- 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
-
- 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
- F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/403—Transmission of power through the shape of the drive components
- F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
- F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
-
- 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H2001/289—Toothed gearings for conveying rotary motion with gears having orbital motion comprising two or more coaxial and identical sets of orbital gears, e.g. for distributing torque between the coaxial sets
-
- 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
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Retarders (AREA)
- Wind Motors (AREA)
Abstract
The present invention provides a planetary gear unit (20) for a gear transmission unit (11) of a wind turbine (10) comprising a rotor hub (14) and a nacelle structure (15). The planetary gear unit (20) comprises a main bearing (30), a ring gear (24), a sun gear (22) and a planet carrier (23) for driving a plurality of planet shafts (26) onto which planet gears (21) are rotatably mounted by means of planet bearings (27). The planet carrier (23) comprises circumferentially spaced studs (32) which support a planet bogie plate (33), the planet bogie plate (33) thereby supporting the planet shafts (26) which in turn support and locate circumferentially spaced pairs of planet gears (21) and the ring gear (24) is rotatably connected to the rotor hub (14) of the wind turbine (10) and the planet carrier (23) is non-rotatably connected to the nacelle structure (15) of the wind turbine (10).
Description
PLANETARY GEAR UNIT WITH ROTATING RING GEAR Technical field
The invention relates to a planetary gear unit for a gear transmission unit of a wind turbine. The planetary gear unit comprises a rotating ring gear and a stationary planet carrier.
Background art
There is a continuing demand for larger wind turbines being able to generate a higher number of megawatts of electricity, also referred to as multi-megawatt wind turbines. This is especially for offshore sites due to scarcity of suitable sites onshore and cost of civil works. At the same time the requirements for reduction of size and weight of the machines and their components become more and more important.
Typically a wind turbine rotor drives the low speed shaft of a gear transmission unit, which transforms torque and speed of the rotor to the required torque and speed of an electrical generator. The increasing demand for multi-megawatt wind turbines puts a challenging pressure on new designs of components for such wind turbines in order to keep weight and cost of the wind turbine as low as possible or at least within acceptable ranges.
Integration of the components in a wind turbine is a way to reduce the weight and to make the drive assembly more compact, but it is important that the design and the execution of the drive assembly avoids mutual interference of the external and internal loads on the different components.
Summary
In a first aspect, the present invention provides a planetary gear unit for a gear transmission unit of a wind turbine. The wind turbine comprises a rotor hub and a nacelle structure. The planetary gear unit comprises a main bearing, a ring gear, a sun gear and a planet carrier for driving a plurality of planet shafts onto which planet gears are rotatably mounted by means of planet bearings. The planet carrier comprises circumferentially spaced studs which support a planet bogie plate, the planet bogie plate thereby supporting the planet shafts which in turn support and locate circumferentially spaced pairs of planet gears, and the ring gear is rotatably connected
to the rotor hub of the wind turbine and the planet carrier is non-rotatably connected to the nacelle structure of the wind turbine.
According to embodiments of the invention, the planet bearings may be taper roller bearings.
According to particular embodiments of the invention, the planet gears may comprise at least one surface region for contact by rollers of the taper roller bearings, the surface region acting as an outer bearing ring surface. This may also be referred to as the taper roller bearings having an integrated outer bearing ring.
In a planetary gear unit according to embodiments of the invention, the main bearing may be connected to the ring gear in different ways as known by a person skilled in the art.
According to one embodiment, an inner ring of the main bearing may be directly connected to the ring gear. With the inner ring of the main bearing being directly connected to the ring gear is meant that no other part is present in between the inner ring of he main bearing and the ring gear.
According to other embodiments, an inner ring or an outer ring of the main bearing may be indirectly connected to the ring gear. With the inner ring or outer ring of the main bearing being indirectly connected to the ring gear is meant that another part may be present in between the inner ring or outer ring of the main bearing and the ring gear. According to these embodiments, the inner ring or outer ring of the main bearing may be connected to the ring gear via an intermediate flange. According to exemplary embodiments of the invention, when a planetary gear unit according to embodiments of the invention is integrated or mounted in a wind turbine nacelle, the rotor of the wind turbine hub may be connected to an intermediate flange which in turn connects the inner ring of the main bearing with the ring gear. According to still other embodiments, when a planetary gear unit according to embodiments of the invention is integrated or mounted in a wind turbine, the rotor hub of the wind turbine may be connected to an intermediate flange which in turn connects the outer ring of the main bearing with the ring gear.
An advantage of a planetary gear unit according to embodiments of the invention is that it may easily be connected to the rotor of a wind turbine because the diameter of the ring gear, the intermediate flange and the main bearing are substantially the same.
According to embodiments of the invention, the main bearing, the ring gear and the planet gears may be located coplanar or in other words may be substantially axially aligned as considered in a direction perpendicular to an axis about which the planet gears rotate.
According to other embodiments of the invention, the main bearing may be axially displaced with respect to the ring gear and the planet gears as considered in a direction perpendicular to an axis about which the planet gears rotate. According to these embodiments, the ring gear and the planet gears may be axially aligned according to a direction perpendicular to an axis about which the planet gears rotate.
According to embodiments of the invention, an output shaft of the planetary gear unit may be connected to an input shaft or rotor shaft of a generator of the wind turbine. According to other embodiments, an output shaft of the planetary gear unit may be connected to an input shaft of a further planetary gear unit or to an input shaft of a parallel gear unit.
In a second aspect, the present invention provides a gear transmission unit comprising a planetary gear unit according to embodiments of the present invention.
The gear transmission unit may furthermore comprise a further planetary gear unit and/or a parallel gear unit.
In a further aspect, the present invention provides a wind turbine comprising a gear transmission unit comprising at least a planetary gear unit according to embodiments of the present invention.
According to embodiments of the invention, the wind turbine may comprise a gear transmission unit which furthermore comprises a further planetary gear unit and/or a parallel gear unit. Drawings
It has to be noted that same reference signs in the different figures refer to same, similar or analogous elements.
Fig. 1 is an elevation view of a wind turbine having a gear transmission unit according to embodiments of the present invention.
Fig. 2 and Fig. 3 illustrate different embodiments of a planetary gear unit according to the present invention.
Fig. 4 illustrates a gear transmission unit comprising a planetary gear unit according to an embodiment of the present invention.
Description of the invention
In the description different embodiments will be used to describe the invention. Therefore reference will be made to different drawings. It has to be understood that these drawings are intended to be non-limiting, the invention is only limited by the claims. The drawings are thus for illustrative purposes, the size of some of the elements in the drawings may be exaggerated for clarity purposes.
The term "comprising" is not to be interpreted as limiting the invention in any way. The term "comprising", used in the claims, is not intended to be restricted to what means is described thereafter, it does not exclude other elements, parts or steps.
The term "connected" as used in the claims and in the description has not to be interpreted as being restricted to direct connections, unless otherwise specified. Thus, part A being connected to part B is not limited to part A being in direct contact to part B, but also includes indirect contact between part A and part B, in other words also includes the case where intermediate parts are present in between part A and part B. Not all embodiments of the invention comprise all features of the invention. In the following description and claims, any of the claimed embodiments can be used in any combination.
The present invention will be described by means of different embodiments. It has to be understood that these embodiments are only for the ease of understanding the invention and are not intended to limit the invention in any way.
In a first aspect, the present invention provides an integrated planetary gear unit for a gear transmission unit of a wind turbine comprising a rotor and a nacelle structure. The planetary gear unit comprises a main bearing, a ring gear, a sun gear and a planet carrier for driving a plurality of planet shafts onto which planet gears are rotatably mounted by means of planet bearings. The planet carrier comprises circumferentially spaced studs which support a planet bogie plate, the planet bogie plate thereby supporting the planet shafts which in turn support and locate circumferentially spaced pairs of planet gears. When the planetary gear unit is mounted into a wind turbine, the
ring gear is rotatably connected to the rotor hub of the wind turbine and the planet carrier is non-rotatably connected to the nacelle structure of the wind turbine.
This means that in a planetary gear unit according to embodiments of the invention, when the wind turbine is in use, the ring gear is rotating and the planet carrier is non- rotating or stationary.
Fig. 1 illustrates a wind turbine 10. The wind turbine 10 comprises a gear transmission unit 11 which acts to transmit torque from rotor blades 12 and a rotor hub 14 to an electrical generator 13. The gear transmission unit 11 and generator 13 are housed in and supported by a nacelle structure 15. The gear transmission unit 11 may at least comprise a planetary gear unit. The planetary gear unit may be connected to a rotor shaft of the generator 13, to a further planetary gear unit or to a parallel gear unit. A planetary gear unit 20 according to an embodiment of the present invention is illustrated in Fig. 2. The planetary gear unit 20 comprises planet gears 21, a sun gear 22, a planet carrier 23 and a ring gear 24. The sun gear 22 is connected to an output shaft 25 which connects the planetary gear unit 20, according to different embodiments, either to a further gear unit such as e.g. another planetary gear unit or a parallel gear unit of the gear transmission unit 11, or to a rotor shaft of the generator 13 of the wind turbine 10.
The planet carrier 23 comprises integral and uniformly spaced studs 32 which support a planet bogie plate 33. The planet bogie plate 33 provides support for circumferentially and uniformly spaced planet shafts 26 arranged each to self adjust in angular position on the planet bogie plate 33. Each planet shaft 26 provides support, at opposite sides of the planet bogie plate 33, for a pair of planet bearings 27 about which each of a pair of planet gears 21 are rotatably mounted for engagement with the ring gear 24. The planet bearings 27 may, for example, be taper roller bearings. The taper roller bearings 27 may, according to embodiments of the invention, have an integrated outer ring, which means that, according to these embodiments, the planet gears 21 may comprise a surface region for direct contact by rollers of the taper roller bearings 27. This surface region acts as an outer bearing ring surface.
The ring gear 24 is rotatably connected to the rotor hub 14 of the wind turbine 10, and thus when the wind turbine 10 is functioning the ring gear 24 will be rotating. According to the present example, the planetary gear unit 20 may comprise an intermediate flange 28 for connecting the ring gear 24 with an inner ring 31 of a main
bearing 30. An outer ring 29 of the main bearing 30 is connected to the nacelle structure 15. When the planetary gear unit 20 is integrated or mounted in a wind turbine 10, the rotor hub 14 may, according to the present embodiment, also be connected to the intermediate flange 28. In other words, the rotor hub 14 may be connected to the intermediate flange 28 which in turn connects the inner ring 31 of the main bearing 30 with the ring gear 24.
Further according to embodiments of the present invention, the planet carrier 23 is non-rotatably connected to the nacelle structure 15 of the wind turbine 10, and thus when the wind turbine 10 is functioning, the planet carrier 23 will not rotate, in other words the planet carrier 23 is stationary.
According to other embodiments of the invention, instead of the intermediate flange 28 connecting the inner ring 31 of the main bearing 30 with the ring gear 24, the intermediate flange 28 may also connect the outer ring 29 of the main bearing 30 with the ring gear 24. This is illustrated in Fig. 3. In such cases, the inner ring 31 of the main bearing 30 is connected to the nacelle structure 15. When the planetary gear unit 20 is integrated or mounted in a wind turbine 10, the rotor hub 14 may, according to the present embodiment, also be connected to the intermediate flange 28. In other words, the rotor hub 14 may be connected to the intermediate flange 28 which in turn connects the outer ring 29 of the main bearing 30 with the ring gear 24.
Instead of using an intermediate flange 28 for connecting the main bearing 30 to the ring gear 24, as described in previous embodiments, the main bearing 30 may also be directly connected to the ring gear 24. According to such embodiments, the inner ring 31 of the main bearing 30 may be directly connected to the ring gear 24. This means that according to these embodiments, no intermediate flange or other part is present in between the inner ring 31 of the main bearing 30 and the ring gear 24 (see for example Fig. 4). Again, the ring gear 24 is rotatably connected to the rotor hub 14 of the wind turbine 10 (indicated by the arrow followed by reference number 14) and the planet carrier 23 is non-rotatably connected to the nacelle structure 15 of the wind turbine 10 (indicated by the arrow followed by reference number 15).
In all embodiments described above, the main bearing 30, the ring gear 24 and the planet gears 21 are located coplanar or in other words are substantially axially aligned as considered in a direction perpendicular to an axis about which the planet gears 21 rotate. However, according to other embodiments of the invention, the main bearing 30
may axially be displaced with respect to the ring gear 24 and the planet gears 21 as considered in a direction perpendicular to an axis about which the planet gears 21 rotate. According to such embodiments, the ring gear 24 and the planet gears 21 may be axially aligned as considered in a direction perpendicular to an axis about which the planet gears 21 rotate.
According to embodiments of the invention, the planetary gear unit 11 may be connected to the generator 13 of the wind turbine 10, to a further planetary gear unit (as is the case in the example give in Fig. 4) or to a parallel gear unit. In a second aspect, the present invention provides a gear transmission unit 11 comprising at least a planetary gear unit 20 according to embodiments of the invention as described above.
According to embodiments of the invention, the gear transmission unit 11 may only comprise a planetary gear unit 20 according to embodiments of the invention. In that case, an output shaft of the planetary gear unit 20 may be connected to a rotor shaft of the generator 13 of the wind turbine 10.
According to other embodiments of the invention, the gear transmission unit 11 may comprise a planetary gear unit 20 according to embodiments of the invention and a parallel gear unit. In that case, an output shaft of the planetary gear unit 20 may be connected to an input shaft of the parallel gear unit.
According to still further embodiments of the invention, the gear transmission unit 11 may comprise a planetary gear unit 20 according to embodiments of the invention and a further planetary gear unit 40. In that case, as illustrated in Fig. 4, an output shaft 34 of the planetary gear unit 20 is connected to an input shaft 35 of the further planetary gear unit 40. The further planetary gear unit 40 may be any planetary gear unit as known by a person skilled in the art and may comprise a ring gear 36, planet gears 37 mounted on a planet shaft 38 by means of planet bearings 39 and a planet carrier 41. According to embodiments of the invention, the input shaft 35 of the further planetary gear unit 40 may be either connected to the rotor shaft of the generator (indicated by the arrow followed by reference number 13 in Fig. 4), or to an input shaft of a parallel gear unit (not shown in the figures).
In all embodiments described above with respect to the second aspect of the invention, the planetary gear unit 20 may be implemented in any way as described with respect to the first aspect of this invention. In a third aspect, the present invention also provides a wind turbine 10 comprising a gear transmission unit 11 according to embodiments of the invention as described above with respect to the second aspect. The gear transmission unit 11 may comprise any implementation of the planetary gear unit 20 according to embodiments as described above with respect to the first aspect of the present invention.
Claims
1. - A planetary gear unit (20) for a gear transmission unit (11) of a wind turbine (10) comprising a rotor hub (14) and a nacelle structure (15), the planetary gear unit (11) comprising a main bearing (30), a ring gear (24), a sun gear (22) and a planet carrier (23) for driving a plurality of planet shafts (26) onto which planet gears (21) are rotatably mounted by means of planet bearings (27), wherein the planet carrier (23) comprises circumferentially spaced studs (32) which support a planet bogie plate (33), the planet bogie plate (33) thereby supporting the planet shafts (26) which in turn support and locate circumferentially spaced pairs of planet gears (21) and wherein the ring gear (24) is rotatably connected to the rotor hub (14) of the wind turbine (10) and the planet carrier (23) is non- rotatably connected to the nacelle structure (15) of the wind turbine (10).
2. - A planetary gear unit (20) according to claim 1, wherein the planet bearings (27) are taper roller bearings.
3.- A planetary gear unit (20) according to claim 2, wherein the planet gears (21) comprise a surface region for contact by rollers of the taper roller bearings (27), the surface region acting as an outer bearing ring surface.
4. - A planetary gear unit (20) according to any of the previous claims, wherein an inner ring (31) of the main bearing (30) is connected to the ring gear (24) via an intermediate flange (28).
5. - A planetary gear unit (20) according to any of claims 1 to 3, wherein an outer ring (29) of the main bearing (30) is connected to the ring gear (24) via an intermediate flange (28).
6. - A planetary gear unit (20) according to any claims 1 to 3, wherein an inner ring (31) of the main bearing (30) is directly connected to the ring gear (24).
7. - A planetary gear unit (20) according to any of the previous claims, wherein the main bearing (30), the ring gear (24) and the planet gears (21) are substantially axially aligned as considered in a direction perpendicular to an axis about which the planet gears (21) rotate.
8.- A planetary gear unit (20) according to any of claims 1 to 6, wherein the main bearing (30) is axially displaced with respect to the ring gear (24) and the planet gears (21) as considered in a direction perpendicular to an axis about which the planet gears (21) rotate.
9. - A planetary gear unit (20) according to any of the previous claims, wherein an output shaft (34) of the planetary gear unit (20) is connected to a rotor shaft of a generator (13) of the wind turbine (10).
10. - A planetary gear unit (20) according to any of claims 1 to 8, wherein an output shaft (35) of the planetary gear unit (20) is connected to an input shaft (36) of a further planetary gear unit (40) or to an input shaft of a parallel gear unit.
11. - A gear transmission unit (11) comprising a planetary gear unit (20) according to any of the previous claims.
12. - A gear transmission unit (11) according to claim 11, furthermore comprising a further planetary gear unit (40) and/or a parallel gear unit.
13. - A wind turbine (10) comprising a gear transmission unit (11) according to claim
11 or 12.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB1001052.8A GB201001052D0 (en) | 2010-01-22 | 2010-01-22 | Planetary gear unit with rotating ring gear |
| GB1001052.8 | 2010-01-22 | ||
| EP10164992 | 2010-06-04 | ||
| EP10164992.9 | 2010-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011089036A1 true WO2011089036A1 (en) | 2011-07-28 |
Family
ID=43735728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/050190 WO2011089036A1 (en) | 2010-01-22 | 2011-01-07 | Planetary gear unit with rotating ring gear |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2011089036A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012052123A1 (en) * | 2010-10-21 | 2012-04-26 | Imo Holding Gmbh | Assembly for extracting the rotational energy from the rotor hub of the wind turbine of a wind turbine system |
| CN103770936A (en) * | 2014-02-08 | 2014-05-07 | 合肥工业大学 | Helical bevel gear planetary gear train for main reducing gear of helicopter |
| US20230313876A1 (en) * | 2023-05-12 | 2023-10-05 | Zongyou XU | Three-row roller slewing bearing-gearbox integrated structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002079644A1 (en) * | 2001-04-02 | 2002-10-10 | Vestas Wind Systems A/S | Wind turbine comprising a planetary gear |
| DE10351524A1 (en) * | 2002-11-05 | 2004-08-12 | Roland Weitkamp | Rotor bearing arrangement for transferring rotor bending moments and torques for wind power plant has hub directly connected to inner ring of radial bearing or/and to bearing stiffening ring |
| DE10318945B3 (en) * | 2003-04-26 | 2004-10-28 | Aerodyn Gmbh | Planetary gearing, for a wind energy generator, has a bearing structure where the load from the external rotor is minimized on the bearings and gear components to increase their life |
| US20040247437A1 (en) * | 2001-10-25 | 2004-12-09 | Ryoichi Otaki | Wind power generator |
| EP1544504A2 (en) * | 2003-12-19 | 2005-06-22 | Winergy AG | Planetary transmission, in particular for wind power plant |
| WO2008068260A2 (en) * | 2006-12-04 | 2008-06-12 | Lohmann & Stolterfoht Gmbh | Power-split wind power gearbox |
| DE102007012408A1 (en) * | 2007-03-15 | 2008-09-18 | Aerodyn Engineering Gmbh | Wind turbines with load-transmitting components |
| US20090221397A1 (en) * | 2006-05-22 | 2009-09-03 | Demtroeder Jens | Gear System for a Wind Turbine |
-
2011
- 2011-01-07 WO PCT/EP2011/050190 patent/WO2011089036A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002079644A1 (en) * | 2001-04-02 | 2002-10-10 | Vestas Wind Systems A/S | Wind turbine comprising a planetary gear |
| US20040247437A1 (en) * | 2001-10-25 | 2004-12-09 | Ryoichi Otaki | Wind power generator |
| DE10351524A1 (en) * | 2002-11-05 | 2004-08-12 | Roland Weitkamp | Rotor bearing arrangement for transferring rotor bending moments and torques for wind power plant has hub directly connected to inner ring of radial bearing or/and to bearing stiffening ring |
| DE10318945B3 (en) * | 2003-04-26 | 2004-10-28 | Aerodyn Gmbh | Planetary gearing, for a wind energy generator, has a bearing structure where the load from the external rotor is minimized on the bearings and gear components to increase their life |
| EP1544504A2 (en) * | 2003-12-19 | 2005-06-22 | Winergy AG | Planetary transmission, in particular for wind power plant |
| US20090221397A1 (en) * | 2006-05-22 | 2009-09-03 | Demtroeder Jens | Gear System for a Wind Turbine |
| WO2008068260A2 (en) * | 2006-12-04 | 2008-06-12 | Lohmann & Stolterfoht Gmbh | Power-split wind power gearbox |
| DE102007012408A1 (en) * | 2007-03-15 | 2008-09-18 | Aerodyn Engineering Gmbh | Wind turbines with load-transmitting components |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012052123A1 (en) * | 2010-10-21 | 2012-04-26 | Imo Holding Gmbh | Assembly for extracting the rotational energy from the rotor hub of the wind turbine of a wind turbine system |
| US9388796B2 (en) | 2010-10-21 | 2016-07-12 | Imo Holding Gmbh | Assembly for extracting the rotational energy from the rotor hub of the wind turbine of a wind turbine system |
| CN103770936A (en) * | 2014-02-08 | 2014-05-07 | 合肥工业大学 | Helical bevel gear planetary gear train for main reducing gear of helicopter |
| US20230313876A1 (en) * | 2023-05-12 | 2023-10-05 | Zongyou XU | Three-row roller slewing bearing-gearbox integrated structure |
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