Yoke and bearing fitting assembly for rotors

Details Yoke and bearing fitting assembly for rotors Yoke and bearing fitting assembly for rotors

B - Operations, Transporting

64

C

B64C 27/04 (2006.01)

Patent

CA 2749117

A yoke and bearing fitting assembly for a multi-blade aircraft rotor is disclosed. The assembly has a yoke having arms extending generally radially from a central portion of the yoke, the arms each having opposing surfaces. An aperture is formed in each arm and extends between the surfaces. A bearing fitting has a body configured for insertion into the aperture of the yoke and has two rims protruding from a periphery of the body, the body also having a bearing mount adapted for mounting a pitch change bearing assembly to the yoke. Each rim abuts one of the surfaces of the associated yoke arm when the bearing fitting is installed within the aperture, so as to create clamping forces between the rims and the arm and the arm. The bearing fitting transmits forces from the pitch bearing assembly into the yoke.

L'invention porte sur un ensemble de raccord à cardan et palier pour un rotor d'aéronef à pales multiples. L'ensemble comporte un cardan possédant des bras s'étendant globalement radialement à partir d'une partie centrale du cardan, les bras comportant des surfaces opposées. Une ouverture est formée dans chaque bras et s'étend entre les surfaces. Un raccord à palier comporte un corps configuré pour l'insertion dans l'ouverture du cardan et comporte deux rebords faisant saillie à partir d'une périphérie du corps, le corps comportant également une monture de palier adaptée pour monter un ensemble palier à changement de pas sur le cardan. Chaque rebord bute sur l'une des surfaces du bord de cardan associé lorsque le raccord à palier est installé dans l'ouverture, de façon à créer des forces de serrage entre les rebords et le bras. Les éléments de raccord à palier transmettent des forces à partir de l'ensemble palier à pas dans le cardan.

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