The assembly of the small-scale tower, can do dismantlement the crane

摘要

PURPOSE: To perform assembly and disassembly of a tower mast in a small steel tower, so as to simultaneously assemble the steel tower, by lowering a triangular pyramid-shaped steel tower member of a steel tower loaded and fixed on the upper end of the steel tower from the upper end of the steel tower by means of an auxiliary boom, and disassembling it from the steel, tower. ;CONSTITUTION: A boom 2 is made to fall further rearward from the vertical position, the tip of an auxiliary boom 6 is arranged in the center part of a steel tower A by making an auxiliary boom 6 fall forward, and a bosom space 13 is formed of the boom 2 and the auxiliary boom 6. The triangular pyramid- shaped steel tower top part B is suspended from the tip of the auxiliary boom 6 by a wire rope 9 on which a hook 8 is provided, and the triangular pyramid- shaped steel tower top part B is loaded and fixed to the upper end of a steel tower A. On the other hand, when the triangular pyramid-shaped steel tower top part B is removed from the steel tower A, the triangular pyramid-shaped steel tower top part B is lifted by the wire rope 9 since the bosom space 13 is formed after the auxiliary boom 6 and the boom 2 are bent and formed into U shapes on the upper end of the boom 2.;COPYRIGHT: (C)1997,JPO