Device for locking a fuel assembly in a container

In a transport structure comprising a cradle having at least one supporting surface, on which an object rests, and at least one flange mounted for pivoting movement about an axle on said cradle between a raised position, remote from said supporting surface and said object, and a position turned down in a direction of said supporting surface and said object, as well as means for locking said flange in its turned-down position,

• a device for fastening said object comprising
• (a) at least one clamping set consisting of a bearing block connected to said flange in an articulated manner about an axle substantially parallel to said axle of said flange;
• (b) a shoe mounted on said bearing block for limited displacement in relation to said bearing clock in a direction enabling selective movement of said shoe toward and away from said bearing block and said flange and comprising a bearing surface directed towards said supporting surface of said cradle, in said turned-down position of said flange;
• and
• (c) a leaf spring interposed between said bearing block and said shoe and exerting a return force on said shoe in a direction away from said bearing block and said flange.