CROSSARM FOR MOUNTING-DOCKING WORKS WITH LARGE-SIZE PRODUCTS Russian patent published in 2017 - IPC B66C1/12 

FIELD: construction.

SUBSTANCE: crossarm contains a means for suspending to a crane, slings and a rigging unit. The rigging unit is made in the form of a lattice flat diaphragm repeating the contours of the shell cavity, the area of which is smaller than the cross-sectional area of the thin-walled shell. On the perimeter of the lattice flat diaphragm, an inflatable chamber of a strong elastic or flexible material is fixed, made with the possibility of supplying compressed air into it from the source of the latter, to which it is connected by a channel equipped with stop valves. The lower ends of the slings are fixed to the lattice flat diaphragm uniformly along its perimeter and at equal distances from its center, and their upper ends are fixed to the means for suspending to a crane, with using at least one lattice flat diaphragm.

EFFECT: uniform distribution of the load from its own weight of the shell to be mounted on its inner surface and the areal contact with it.

2 cl, 3 dwg