Fastening device particularly suitable for the fastening between an air intake and an engine of an aircraft nacelle

摘要

A fastening device includes a first annular flange connected to an air intake, a second annular flange connected to a powerplant pressed against the second annular flange and fastening elements that allow the annular flanges to be linked. For at least a first fastening element, a blade is fitted between the first fastening element and the first annular flange, the blade including at least a central part linked to the first fastening element, radially mobile relative to the first annular flange, and at least one offset part for which at least radial centripetal displacement is limited relative to the first annular flange, the central part and the offset part being offset relative to one another along the direction of the circumference.

主权项

1. A fastening device between a first conduit of an aircraft nacelle air intake and a second conduit of a powerplant installed in said nacelle, the two conduits being installed end-to-end, said fastening device including:
a first annular flange, linked to the air intake, a second annular flange linked to the powerplant pressed up against said air intake annular flange, wherein holes are arranged in the first and second annular flanges, respective holes in the first and second annular flanges being aligned with one another, fastening elements whose shanks are inserted into the holes, allowing link up of said first and second annular flanges, at least a first fastening element of said fastening elements having a shank with a diameter and the hole of one of the first and second annular flanges into which the first fastening element is inserted has a diameter greater than that of the shank allowing play of said shank, and at least one blade interposed between said first fastening element and said second annular flange, the blade comprised of at least two parts comprising at least one central part linked to the first fastening element, radially mobile relative to said second annular flange and at least one offset whose centripetal radial displacements at least are limited relative to said second annular flange, the two parts being offset in the direction of a circumference of the connecting device, wherein: the blade exerts a force on the first fastening element that is proportional to radial movement, towards the exterior, of the first fastening element, the central part comprises a passage hole through which the shank of the first fastening element passes and whose diameter corresponds to that of the shank of the first fastening element, the second annular flange supports at least one stop to limit movement of the offset part along a centripetal radial direction, said stop comprises a shank of a second fastening element of said fastening elements integral to the second annular flange, and the offset part of the blade includes a passage hole whose dimension in the radial direction is adjusted in diameter to that of the shank of the second fastening element.