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US 2003/0147751 A1Published application
Bearinf for an adjustable rotor blade on a wind energy plant
OwnerAloys Wobbeninventor
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OwnerAloys Wobbeninventor
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The invention relates to the bearing for an adjustable rotor blade on the rotor hub of a wind energy plant, with a roller bearing as the pivot bearing for the positioning drive, which can transfer high axial forces and large twisting moments with low relative movements between the bearing halves. One bearing half comprises a bearing ring with two positive-fit rows of roller bodies, radially offset from each other and the other bearing half comprises a bearing ring engaging with the above with a U-shaped section. The bearing ring for the rotor blade, forming the other bearing half, comprises two rings (10, 12) of varying diameter, which are independently fixed to the rotor blade (3). The circular root of the hollow rotor blade is split into two sub-shells (3a, 3b) and each sub-shell is fixed to one of the both rings (10, 12), of the one bearing ring.
An adjusting drive pivot mounting of an adjustable rotor blade on the rotor hub of a wind power installation with a rolling bearing for the transmission of high axial forces and great flexural moments with small relative movements between the co-operating bearing components, with a bearing race for the one co-operating bearing component, which receives in positively locking relationship two radially mutually displaced rows of rolling bodies, and a bearing race for the other co-operating bearing component, which embraces them in a U-shape in cross-section, wherein the bearing race for the rotor blade forming the other co-operating bearing component comprises two races (10, 12) of different diameters which are fixed independently of each other to the rotor blade (3).
Dependencies are inferred from the claim text.