LAYING METHOD OF VERTICAL TRUNK WIRE IN MID- TO HIGH-RISE BUILDING AND DEVICE USED FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a laying method of a vertical trunk wire from a high story to an upper floor or basement in a single procedure in a mid- to high-rise building, without requiring a large-scale machine or power.;SOLUTION: The laying method of a vertical trunk wire in the mid- to high-rise building includes the steps of carrying a trunk cable 4 wound around a drum 5 into an upper floor; unreeling the trunk wire 4 from the drum 5, by using an unreeling device 6 from the upper floor to a wiring shaft 2 formed to penetrate through lower floors and allowing the cable to fall; allowing the trunk wire to penetrate through a plurality of constant speed fall controllers 7 provided with intervals in the wiring shaft 2 along the wiring shaft 2; and laying the trunk cable 4 from the wiring shaft 2 to the respective lower floors while the falling speed of the trunk cable 4 is controlled.;COPYRIGHT: (C)2011,JPO&INPIT