| 摘要 |
PROBLEM TO BE SOLVED: To certainly and verticaly movably hand and retain a suspension material without being broken and removed from a turn pulley even if a large load is applied to a wire. SOLUTION: In the suspension device 11, the verticaly movable suspension material 12 is supported so as to hang and retain it by the wire 14 an the wire is connected to a winding device 16. The suspension material 12 is vertically moved by winding and winding back the wire 14 by a driving of the winding device 16. The turn pulley 15 provided between the suspension material 12 and the winding device 16 is constituted by arranging a plurality of free- rotating pulleys in a circular arc shape. The device is characterized in that the wire 14 is laid on a plurality of free-rolling pulleys 18 to change a direction.
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