| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide safety equipment which is effective and proper for installation on a roof face of a folded-plate roof.SOLUTION: At least a pair of two sets of support columns 2 are arranged at an interval, and a main rope 9 is bridged between upper ends of the support columns. The support column is formed by combining a set of three pieces of leg bodies 3 whose shapes and dimensions are the same into a three-leg shape, the upper ends of the leg bodies are connected to each other so as to be relatively rotatable and decomposable, and lower leg parts of the leg bodies are connected to seam parts 1a of a folded-plate roof 1, respectively, via fixing metal fittings 8 so as to be removable. The leg bodies are formed of metal strip plates as raw materials, upper connecting pieces for connecting steel plates to each other and lower connecting pieces connected to the folded-plate roof are bent and formed at upper ends and lower ends of the leg bodies, and stiffener ribs are formed at the lower connect pieces and a main body.</p> |
