Blade blocking device for a turbine engine disc groove

Details Blade blocking device for a turbine engine disc groove Blade blocking device for a turbine engine disc groove

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 5/32 (2006.01) F01D 5/30 (2006.01)

Patent

CA 2411688

The invention relates to a device for immobilizing blades (8) in the peripheral slot (2) of a turbomachine disk (1) . Said blades comprise roots (7) of the hammer head type adapted to be introduced into said slot (2) through a loading window (6a, 6b) and held in said slot by collaboration of shape with the sidewalls (3a, 3b) thereof. Said immobilizing device is adapted to be introduced into said slot through said loading window and comprises a locking element (16) arranged in a space separating two adjacent blade roots (7a, 7b). Said locking element is adapted to be raised up into a lock housing formed in the sidewalls of said slot under the action of a radial manipulating screw (17) the head (41) of which rests against the bottom of the slot, a radial clearance being provided between the bottom of the slot (2) and the underside (15) of the blade roots, and said screw head (41) being restrained in a radially outward direction by said two adjacent blade roots (7a, 7b).

L'invention concerne un dispositif de blocage des aubes (8) dans la rainure périphérique (2) d'un disque (1) de turbomachine, lesdites aubes comportant des pieds (7) de type attache marteau susceptibles d'être introduits dans ladite rainure (2) par une fenêtre de chargement (6a, 6b) et maintenus dans ladite rainure (2) par coopération de forme avec les parois latérales (3a, 3b) de cette dernière, ledit dispositif de blocage étant susceptible d'être introduit dans ladite rainure par ladite fenêtre de chargement et comportant un élément de verrouillage (16) disposé dans un espace séparant deux pieds d'aube consécutifs (7a, 7b) et susceptible d'être remonté dans un logement de verrou ménagé dans les parois latérales de ladite rainure sous l'action d'une vis de manoeuvre (17) radiale dont la tête (41) est en appui sur le fond de la rainure, un jeu radial étant prévu entre le fond de la rainure (2) et le dessous (15) des pieds d'aube, caractérisé par le fait que la tête de vis (41) est retenue radialement vers l'extérieur par les deux pieds d'aube adjacents (7a, 7b).

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