Attachment bolt locking assembly

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 39/10 (2006.01)

Patent

CA 2276784

A locking assembly (20) that mechanically locks an attach- ment bolt (11), such as one used to secure a missile launcher (10) to an aircraft, for example, thus preventing the bolt from vibrating loose as a result of vibration experienced during flight. The lock- ing assembly has a spring loaded locking nut (23) that mechanically engages a hex head (24a) of an extension shaft (24) that is coupled to the attachment bolt. Transverse pins (22) permit axial movement of the locking nut but prevent rotation thereof. A socket is used to push the locking nut away from the hex head of the extension shaft, so that the attachment bolt can be loosened or tightened. When the socket is removed, a spring (25) pushes the locking nut over the hex head of the extension shaft, locking the attachment bolt and preventing it from turning.

L'invention porte sur un ensemble (20) de blocage qui bloque mécaniquement un boulon (11) de fixation tel qu'un boulon utilisé pour fixer un lance-missiles (10) sur un avion, par exemple, de façon à empêcher le boulon de se dévisser sous l'effet des vibrations générées pendant le vol. L'ensemble de blocage comporte un écrou (23) de blocage à ressort qui vient en contact mécaniquement avec une tête (24a) hexagonale d'une tige (24) d'extension couplée au boulon de fixation. Des goupilles (22) d'arrêt transversales permettent le déplacement axial de l'écrou de blocage, mais empêche celui-ci de tourner. Une douille est utilisée pour repousser l'écrou de la tête hexagonale de la tige d'extension de façon à pouvoir dévisser ou desserrer celui-ci. Lorsqu'on retire la douille, un ressort (25) pousse l'écrou de blocage contre la tête hexagonale de la tige d'extension, bloquant ainsi le boulon de fixation pour l'empêcher de tourner.

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