Bearing for an adjustable rotor blade on a wind energy plant

F - Mech Eng,Light,Heat,Weapons – 03 – D

Patent

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Details

F03D 3/06 (2006.01) F03D 7/02 (2006.01) F03D 11/00 (2006.01) F16C 19/18 (2006.01) F16C 19/54 (2006.01)

Patent

CA 2402044

The mounting of an adjustable rotor blade on the rotor hub of a wind power installation has as an adjusting drive pivot bearing, a rolling bearing for the transmission of high axial forces and great flexural moments in the event of slight relative movements between the co-operating bearing components. It comprises 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. 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). The circular root of the hollow rotor blade (3) is forked to form two shell portions (3a, 3b) and each shell portion is fixed to one of the two races (10, 12) of the one bearing race.

L'invention concerne un palier pour une pale de rotor réglable montée sur un moyeu de rotor d'une éolienne. Dans ce palier, le palier pivotant du mécanisme de positionnement se présente sous la forme d'un palier à roulement, servant à transmettre des forces axiales et des couples de flexion élevés, lors de faibles mouvements relatifs entre les éléments de paliers. Ce palier à roulement comprend une bague de roulement destinée à un élément de palier et recevant par liaison de forme deux rangées de corps de roulement, décalées dans le sens radial, et une bague de roulement destinée à l'autre élément de palier et entourant les corps de roulement en formant un U en coupe transversale. La bague de roulement pour la pale de rotor formant l'autre élément de palier est constituée de deux bagues (10, 12) de différents diamètres, qui sont fixées sur la pale de rotor (3), indépendamment l'une de l'autre. La racine circulaire de la pale de rotor creuse (3) est divisée en deux coques partielles (3a, 3b), chacune de ces dernières étant fixée sur une des deux bagues (10, 12) d'une bague de roulement.

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