Lifting device

Abstract

As shown in "Reference Diagram 1 Showing the Usage State," this item is a suspension device that is attached to the lower flange of a concrete bridge girder in order to install a suspended scaffold by suspending a scaffolding board from the girder via a suspension member. As shown in the "Reduced Exploded Reference Perspective View," the lower end of the vertical member and the end of the horizontal member are bolted together via a connecting plate, and the end of the horizontal member has five bolt holes, consisting of three upper bolt holes and two lower bolt holes, arranged in a staggered pattern. In addition, the connecting plate has pairs of long holes parallel to the axis of the horizontal member that correspond to the upper and lower bolt holes, arranged in parallel.

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