Patent ID: 11951577
Assignee: MANITOWOC CRANE GROUP FRANCE
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 22:
23. A mounting method for mounting a connecting pin used for an end-to-end assembly of two frame elements of a crane structure, the mounting method comprising:
providing the mounting/dismounting device of claim 1;
positioning the connecting pin, of tubular shape, in a connecting hole passing through the two frame elements, and the connecting pin has a distal end provided with an enlarged head and a proximal end which are opposite to each other, the enlarged head being disposed on a first side of the structure;
mounting the bushing around the rod body, on a second side of the structure, opposite to the first side of the structure, with the second open end which is placed in abutment against the proximal stop;
setting up the base on the structure with the nut disposed on the first side of the structure in alignment with the connecting pin, the enlarged head of which is placed in abutment against the nut or the base;
pressing and passing the mounting/dismounting rod through the two frame elements and the connecting pin until the threaded distal portion comes into contact with the nut supported by the base, and the bushing bears against one of the two frame elements on the second side of the structure;
coupling the head of the mounting/dismounting rod to a bit of a screwdriver, which is located on the second side of the structure;
activating the screwdriver to screw the threaded distal portion into the nut, leading to an axial displacement of the nut in a direction from the first side towards the second side of the structure, and therefore also to an axial displacement of the connecting pin which is engaged through the two frame elements, and wherein during screwing the abutment of the base bears on one of the two frame elements in order to block the base and the nut in rotation; and
once the enlarged head of the connecting pin is in abutment against one of the two frame elements, activating the screwdriver in the opposite direction to unscrew the threaded distal portion out of the nut and then remove the mounting/dismounting device.