[특허]Rotor blade attachment

Repower Systems AG

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Rotor blade attachment

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F03D-011/00 F03D-011/02
미국특허분류(USC)	416/204R; 416/210R; 416/229R
출원번호	US-0299055 (2007-04-20)
등록번호	US-8133029 (2012-03-13)
우선권정보	DE-10 2006 022 272 (2006-05-11)
국제출원번호	PCT/EP2007/003481 (2007-04-20)
§371/§102 date	20081105 (20081105)
국제공개번호	WO2007/131589 (2007-11-22)
발명자 / 주소	Quell, Peter Bendel, Urs Schubert, Matthias Eusterbarkey, Carsten
출원인 / 주소	Repower Systems AG
대리인 / 주소	Rankin, Hill & Clark LLP
인용정보	피인용 횟수 : 3 인용 특허 : 15

초록
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The invention relates to a rotor blade attachment (17), in particular of a wind power plant (1), for the connection of a rotor blade (5) with an attachment device (4), including a transverse pin (20, 20′) and a connecting device (13, 21), which can be brought together to establish an operative connection, wherein the connecting device (13, 21) defines a longitudinal axis. The rotor blade attachment (17) is characterized in that the transverse pin (20, 21′) in the direction of the longitudinal axis of the connecting device has a higher bending stiffness than transversally to the longitudinal axis (18). An alternative rotor blade attachment (17) is characterized in that the transverse pins (20, 20′) are arranged in at least two rows (33, 34), wherein at least a first row (33) is arranged closer to the blade-root-side end (19) of the rotor blade (5) than at least a second row (34). Another rotor blade attachment (17) is characterized in that the transverse pin (20, 20′) is completely encapsulated by the rotor blade (5).

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1. Rotor blade attachment (17), of a wind power plant (1), for the connection of a rotor blade (5) with an attachment device (14), comprising: a transverse pin (20, 20′), anda connecting device (13, 21), which can be brought together with the transverse pin to establish an operative connection,wherein the connecting device (13, 21) defines a longitudinal axis (18),and wherein in the direction of the longitudinal axis (18) of the connecting device (13, 21), the transverse pin (20, 20′) has a higher bending stiffness than transversally to the longitudinal axis (18). 2. Rotor blade attachment (17) according to claim 1, wherein the transverse pin (20, 20′), in the direction of the longitudinal axis (18) of the connecting device (13, 21), has a greater elongation than transversally to the direction of the longitudinal axis (18) of the connecting device (13, 21). 3. Rotor blade attachment (17) according to claim 2, wherein the transverse pin (20, 20′) is designed with a rectangular cross-section with rounded edges. 4. Rotor blade attachment (17) according to claim 2, wherein the transverse pin (20, 20′) is designed with an elliptical or oval cross-section. 5. Rotor blade attachment (17) according to claim 2, wherein the transverse pin (20, 20′) is designed with a double-T-shaped cross-section with rounded edges. 6. Rotor blade attachment (17), according to claim 1, further comprising: additional transverse pins (20, 20′), each of which can be brought together to establish an operative connection with an additional connecting device (13, 21),wherein the plurality of transverse pins (20, 20′) are arranged in at least two rows (33, 34), andwherein at least a first row (33) is arranged closer to the blade-root-side end (19) of the rotor blade (5) than at least one second row (34). 7. Rotor blade attachment (17) according to claim 6, wherein the rows (33, 34) are arranged (5) around the perimeter of the blade root (6). 8. Rotor blade attachment (17) according to claim 6, wherein the operative connection of the connecting devices (13, 21) with the transverse pins (20′), which are arranged in the second row (34), is made softer compared to the operative connection of the connecting devices (13, 21) with the transverse pins (20), which are arranged in the first row (33) by one or more of the following conditions: the connecting devices (13, 21), which are assigned to the first row (33) of transverse pins (20), are thicker than the connecting devices (13, 21), which are assigned to the second row (34) of transverse pins (20′), orthe connecting devices (13, 21), which are assigned to the first row (33), are shorter than the connecting devices (13, 21), which are assigned to the second row (34), orwherein the connecting devices (13, 21), which are assigned to the first row (33), are made from a different material than the connecting devices (13, 21), which are assigned to the second row (341. 9. Rotor blade attachment (17) according to claim 8, wherein the connecting devices (13, 21), which are assigned to the first row (33), are shorter than the connecting devices (13, 21), which are assigned to the second row (34). 10. Rotor blade attachment (17) according to claim 6, wherein the connecting devices (13, 21) are different in length. 11. Rotor blade attachment (17) according to claim 6, wherein the connecting devices (13, 21) are at cat partially different in thickness. 12. Rotor blade attachment (17) according to claim 11, wherein the connecting devices (13, 21), which are assigned to the first row (33) of transverse pins (20), are thicker than the connecting devices (13, 21), which are assigned to the second row (34) of transverse pins (20′). 13. Rotor blade attachment (17), according to claim 1, wherein the transverse pin (20, 20′) is completely encapsulated by the rotor blade (5). 14. Rotor blade attachment (17) according to claim 13, wherein the encapsulation of the sides (37, 37′) of the transverse pin (20, 20′) facing the outside surface (36) and the inner surface (35) of the rotor blade (5) occurs through a material (27, 27′) used in the rotor blade (5), through at least one laminate layer (27, 27′). 15. Rotor blade attachment (17) according to claim 14, wherein the at least one laminate layer (27, 27′) is strengthened through one or more reinforcing metal layers (32). 16. Rotor blade attachment (17) according to claim 14, wherein the sides (37, 37′) of the transverse pin (20, 20″) facing the outer surface (36) and the inner surface (35) of the rotor blade (5) are encapsulated with a material thickness of 5 mm to 20 mm, in the case of a 35 m to 55 m long rotor blade (5). 17. Rotor blade attachment (17) according to claim 13, wherein the encapsulating material (27, 27′) reaches more than one diameter of the transverse pin beyond the area of the transverse pin (20, 20′) inserted in the rotor blade (5). 18. Rotor blade attachment (17) according to claim 13, wherein the transverse pin (20, 20′) on at least one side (37, 37′), which faces the inner surface (35) and/or the outer surface (36) of the rotor blade (5), has an opening (28) with a shape, in which a tool of a corresponding shape can be inserted at least indirectly in a form- and/or friction-fit manner. 19. Rotor blade attachment (17) according to claim 18, wherein the opening (28) is a blind hole, in which a thread (24′) is provided. 20. Rotor blade attachment (17), according to claim 1: wherein at least the connecting device (13, 21) is pretensioned, andwherein the material (30-32) of the rotor blade (5) comprises at least in the area of the transverse pin (20, 20′) a structure made of fiber reinforced plastic layers (31) and layers made of a metal containing reinforcing material (32). 21. Rotor blade attachment (17) according to claim 20, wherein the area of the transverse pin extends to the area, in which a force affects the material (30-32) of the rotor blade (5) due to the pretensioning. 22. Rotor blade attachment (17) according to claim 20, wherein the area extends to the area of the rotor blade root (6). 23. Rotor blade attachment (17) according to claim 20, wherein in a transition area (40) for the adjustment of the structure of the rotor blade root (6) to the structure of the rotor blade (5, 29) a constant, from layer to layer, elongation of the layers (32) of the reinforcing material (32) towards the rotor blade tip (41) is provided. 24. Rotor blade attachment (17) according to claim 20, wherein the reinforcing material (32) is metal. 25. Rotor blade attachment (17) according to claim 24, wherein the metal is present as a film (32) or grating. 26. Rotor blade attachment (17) according to claim 25, wherein the thickness of the film (32) is between 0.1 mm to 0.8 mm. 27. Rotor blade attachment (17) according to claim 20, wherein the thickness of the fiber reinforced plastic layers (31) is between 0.2 mm and 1 mm. 28. Rotor blade attachment (17) according to claim 20, wherein at least one part of the fiber reinforced plastic layers (31) has unidirectionally aligned fibers, which are aligned in the longitudinal axial direction of the rotor blade (5). 29. Rotor blade attachment (17) according to claim 1, wherein the longitudinal axis (18) of the connecting device (13, 21) mainly aligns with the middle axis (18) of the rotor blade walls (5), and lies in the same plane as it. 30. Rotor blade attachment (17) according to claim 1, wherein the connecting device (13, 21) comprises an antifatigue-shaft screw (21). 31. Rotor blade attachment (17) according to claim 1, wherein several connecting devices (13, 21) are provided, each of which are in operative connection with at least one transverse pin (20, 20′). 32. Rotor blade attachment (17) according to claim 1, wherein the operative connection creates a pretension. 33. Rotor (4, 5) of a wind power plant (1) with at least one rotor blade (5), one rotor hub (4) and at least one rotor blade attachment (17) according to claim 1. 34. A wind power plant (1) with a rotor blade attachment (17) according to claim 1.

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이 특허를 인용한 특허 피인용횟수: 3

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Rotor blade attachment

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Rotor blade attachment

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