Tension decoupler device

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 21/04 (2006.01) F01D 25/16 (2006.01) F16B 31/00 (2006.01) F16B 31/02 (2006.01) F16P 5/00 (2006.01)

Patent

CA 2442374

The tension decoupler devices comprises: - first fusible rupture members (54), arranged to be parallel to each other, - second structural rupture members (72), arranged to be parallel to each other and parallel to the first rupture members (54). The fusible rupture members (54) and the structural rupture members (72) are designed to break only when the load applied to the decoupler device reaches or exceeds a predetermined load value, and the structural rupture members (72) are designed to have sufficient fatigue strength as long as said applied load does not reach said predetermined load value. Application to a fan shaft bearing support in a turbojet.

Dispositif de découplage de tension comprenant les éléments suivants : premiers éléments de rupture fusibles (54), disposés de façon à être parallèles entre eux; seconds éléments de rupture structuraux (72), disposés de façon à être parallèles entre eux et avec les premiers éléments de rupture (54). Les éléments de rupture fusibles (54) et les éléments de rupture structuraux (72) sont conçus pour ne se casser que lorsque la charge appliquée au dispositif de découplage atteint ou dépasse une valeur de contrainte prédéterminée, et les éléments de rupture structuraux (72) sont conçus pour avoir une résistance à la fatigue suffisante tant que la charge imposée n'atteint pas ladite valeur prédéterminée. Application pratique sur un support de palier d'arbre de soufflante sur un réacté.

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