| 摘要 |
PURPOSE: A drop assembly is provided to enable a worker to easily install and dismantle a slab panel by simplifying the structure of a slab panel assembly. CONSTITUTION: A drop assembly(120) comprises a drop beam(50), a hook locker(58), a tie rod(123), a pivot pipe(121), a washer(125), and a spindle nut(124). The drop beam has a hook(52), a space(C), and main pin grooves(114c). A main pin is inserted into the main pin grooves. When the hook locker is locked, the hook locker is supported by the hook of the drop beam. The tie rod is coupled to the drop beam in a longitudinal direction. The pivot pipe is coupled to the tie rod, and the movement of the pivot pipe is guided by the tie rod. The washer and the spindle nut are screwed on the tie rod and control the movement of the pivot pipe.
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