| 摘要 |
PROBLEM TO BE SOLVED: To improve safety, to shorten work schedule and to reduce the cost by avoiding works of assembly and disassembly of a scaffolding with dangers in each stair. SOLUTION: A column stage 1 is arranged around a steel column 2, each column stage is engaged in an elevating/lowering manner with a corner portion of the steel column 2 through an elevating/lowering guide 17, connection rods 31 with the stability to each of adjacent columns stages 11 are pivotably attached in an oscillating manner in the vertical direction, tip portions of the connection rods 31 are detachably engaged in the vertical direction, one side of a movable stage 50 stretched between the adjacent column stages 11 is pivotably attached to one column stage 11 in an oscillating manner in the vertical direction, the other side is engaged with the other column stage attachably/ detachably, a lifting winch 70 is installed on each column stage 11, and a wire for suspension hanging from a wire fixing piece fixed to an upper end portion of the steel column 2 is fitted to a which 70.
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