Device for mounting/dismounting a connecting pin used for an end-to-end assembly of two frame elements

A mounting/dismounting device for mounting/dismounting a connecting pin used for an end-to-end assembly of two frame elements of a crane structure, the mounting/dismounting device comprising:

• a mounting/dismounting rod having a longitudinal axis, a head adapted to cooperate with a screwdriver, and a rod body having a proximal portion prolonging the head and a threaded distal portion which terminates in a free end;
• a base supporting a nut and having an abutment portion shaped to bear on one of the two frame elements, the threaded distal portion being provided to screw into the nut aligned with the longitudinal axis;
• a proximal stop mounted freely in rotation on the proximal portion of the rod body around the longitudinal axis;
• a bushing which is removable and mounted freely in translation along the longitudinal axis around the rod body between the nut and the proximal stop, the bushing having a first open end and a second open end;
• wherein the mounting/dismounting device is configurable in:
• a mounting configuration in which the bushing is in abutment against the proximal stop;
• and
• a dismounting configuration in which the bushing is in abutment against the base or the nut.