DE-20 2006 016 813 U (2006-10-31); DE-20 2007 011 577 U (2007-08-17)
국제출원번호
PCT/EP2007/009484
(2007-10-31)
§371/§102 date
20091127
(20091127)
국제공개번호
WO2008/052778
(2008-05-08)
발명자
/ 주소
Frank, Hubertus
출원인 / 주소
IMO Holding GmbH
대리인 / 주소
Pandiscio & Pandiscio
인용정보
피인용 횟수 :
0인용 특허 :
1
초록▼
The invention is directed to a rolling bearing arrangement comprising two annular elements that are arranged mutually concentrically and at least regionally inside each other, for connection each to a respective one of two oppositely rotatable system components, and comprising a gap between said con
The invention is directed to a rolling bearing arrangement comprising two annular elements that are arranged mutually concentrically and at least regionally inside each other, for connection each to a respective one of two oppositely rotatable system components, and comprising a gap between said connecting elements, such that they are able to rotate in opposite directions about an imaginary axis located at the center of the annular connecting elements and extending approximately perpendicular to the ring plane, wherein at least two rows of rolling bodies are provided in the region of the gap between the connecting elements, wherein the annular connecting elements completely or partially overlap each other in the radial direction and one or more raceways for rolling bodies are arranged in radially overlapping regions of the annular connecting elements, in such a way that the contact angle which the connecting line between the centers of the points of contact of a rolling body with its two raceways makes with the ring plane is equal to or greater than 75°, and wherein the rolling bodies of at least one row have a contact angle of 15° or less.
대표청구항▼
1. A bearing assembly for a wind power installation, comprising a rolling bearing having a diameter of at least 0.5 m, and a rotary joint of a blade of the wind power installation, the bearing assembly comprising two annular connecting elements (2, 3) adapted for connection each to a respective one
1. A bearing assembly for a wind power installation, comprising a rolling bearing having a diameter of at least 0.5 m, and a rotary joint of a blade of the wind power installation, the bearing assembly comprising two annular connecting elements (2, 3) adapted for connection each to a respective one of two oppositely rotatable system components, and defining a gap (11) between said connecting elements (2, 3), said connecting elements being adapted to rotate in opposite directions about an axis located at a center of said annular connecting elements (2, 3) and extending generally perpendicularly to a ring plane of the assembly, and at least two rows of rolling elements (21, 22; 24) provided in the gap (11) between said connecting elements (2, 3), wherein a) said annular connecting elements (2, 3) at least partially overlap each other in a radial direction, andb) one or more raceways (19, 20, 25, 26) for said rolling elements (21, 22) are arranged in radially overlapping regions (10) of said annular connecting elements (2, 3), such that a contact angle which a connecting line between centers of points of contact of said rolling element (21, 22) with two raceways (19, 25; 20, 26) for said rolling element (21, 22) makes with the ring plane is at least 75°, andc) wherein rolling elements (24) of at least one of said at least two rows of rolling elements (21, 22; 24) have a contact angle of no more than 15°. 2. The bearing assembly as in claim 1, wherein one of said annular connecting elements (2, 3) is provided with at least one circumambient region (10, 16) which faces another one of said annular connecting elements, and at least one of said raceways (19, 20; 25, 26) is embraced by said other connecting element. 3. The bearing assembly as in claim 2, wherein said one of said annular connecting elements is provided with said at least one circumambient region (10; 16) which faces another circumambient region and both raceways are defined by said connecting elements (2, 3). 4. The bearing assembly as in claim 3, wherein a region of said one of said connecting elements that is embraced on a raceway side thereof by said other one of said connecting elements is configured as the at least one circumambient region (16) that extends in the radial direction toward the other said connecting elements. 5. The bearing assembly as in claim 4, wherein the raceways (25, 26) of at least one of said circumambient regions (16) comprise raceways for said rolling elements (21, 22). 6. The bearing assembly as in claim 5, wherein at least one raceway for at least one further row of rolling elements (24) is provided in an end face (17) of at least one of the circumambient regions (16). 7. The bearing assembly as in claim 1, wherein one of said annular connecting elements (2, 3) is provided with a generally C-shaped cross section with at least two circumambient regions facing the other connecting element and into the circumambient region (10) between which a portion of the other connecting element extends. 8. The bearing assembly as in claim 7, wherein one of said raceways (19, 20) for a row of said rolling elements (21, 22) is disposed on each of two mutually facing inner surfaces of said connecting elements (2, 3) and is provided with a C-shaped cross section. 9. The bearing assembly as in claim 8, wherein at least one raceway (23) for at least one further row of the rolling elements (24) is provided in a region of at least one depression (10) between two raised regions (4) of said connecting elements (2, 3). 10. The bearing assembly as in claim 8, wherein said connecting element (2) comprises two mutually separate, superposed individual rings (28, 29). 11. The bearing assembly as in claim 8, wherein one of said connecting elements (2, 3) embraces the other connecting element radially. 12. The bearing assembly as in claim 8, wherein said rolling elements (21, 22) comprise balls. 13. The bearing assembly as in claim 8, wherein said rolling elements (24) comprise a selected one of rollers, drums and balls. 14. The bearing assembly as in claim 8, wherein said raceways are mutually facing raceways (19, 25; 20, 26; 23″, 37) for receiving a common row of the rolling elements (24) and are provided with a circular-segment-shaped cross section whose transverse radius of curvature is larger than a radius of an associated rolling element. 15. The bearing assembly as in claim 14, wherein centers of mutually corresponding raceway cross sections are generally equidistant from an axis of rotation of said rolling bearing. 16. The bearing assembly as in claim 1, wherein a width (w) of the radial overlap is greater than half the extent of said rolling element (21, 22) in the direction of the axis of rotation of said rolling bearing. 17. The bearing assembly in accordance with claim 1, wherein at least one row of low-contact-angle rolling elements (24) is disposed in an axial direction between two rows of the rolling elements (21, 22). 18. The bearing assembly as in claim 17, wherein said row of low-contact-angle rolling elements (24) is disposed generally at a level of a split (27) in said connecting element (2, 3). 19. The bearing assembly in accordance with claim 18, wherein the sealed gap (11) between said connecting elements (2, 3) is at least partly filled with a lubricant. 20. The bearing assembly in accordance with claim 18, wherein the jacket side (35, 36) of at least one of the connecting elements (2, 3) is provided with teeth. 21. The bearing assembly as in claim 1, wherein on one base side of said rolling bearing, an end face of one of said connecting elements (2, 3) is raised. 22. The bearing assembly in accordance with claim 1, wherein on one base side of said rolling bearing, an end face of a first of said connecting elements (2, 3), which is raised, completely embraces in a radial direction an end face of a second of said connecting elements (2, 3). 23. The bearing assembly in accordance with claim 1, wherein said connecting elements (2, 3) are provided with coronally distributed bores (30, 31) for receiving fastening screws. 24. The bearing assembly as in claim 23, wherein said coronally distributed bores (30, 31) of said connecting elements (2, 3) are configured as internally threaded blind bores. 25. The bearing assembly in accordance with claim 1, wherein the gap (11) between said connecting elements (2, 3) is sealed at annular orifices thereof. 26. The bearing assembly in accordance with claim 25, wherein said gap (11), between said connecting elements (2, 3) is sealed on both base sides of said rolling bearing by at least one sealing ring (32, 33) in a region of each step between a raised connecting element and the other connecting element. 27. The bearing assembly in accordance with claim 26, wherein said gap between said two connecting elements is sealed both a radially inward-lying and at a radially outward-lying orifice by a sealing ring. 28. The bearing assembly as in claim 27, wherein two sealing rings each rest against a jacket side of one of said connecting elements and against an adjacent end-face region of said other one of said connecting elements. 29. The bearing assembly as in claim 28, wherein said sealing rings are each provided with a sealing lip that is elastically pressed against an adjacent portion of an end face of said connecting element. 30. The bearing assembly as in claim 27, wherein at least one sealing ring is anchored to a jacket side of one of said connecting elements by being seated in a groove thereof.
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이 특허에 인용된 특허 (1)
Gugel Georg (Nuremberg DEX) Kaiser Theodor (Hochstadt DEX), Rotary roller bearing connection with a free center.
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