| 摘要 |
<p>PROBLEM TO BE SOLVED: To make it possible to extend many electric cables without giving a large tensile load by linking the part between respective stage units that can be moved by wheels so that the units can be fluctuated up and down and right and left, and constituting the units in the endless state. SOLUTION: A linking means 12, which links stage units 11 so that the units can be fluctuated up and down and right and left, is linked to the back side of each mounting part 19 by a hinge pin 19 freely ratably under the parallel state with the mounting surface in which the surfaces of a pair of plate springs are in parallel with the mounting surfaces of mounting parts 13. Then, the part between the stage units 11 can be fluctuated up and down directions by the deflection of the plate springs 18, and the part between the stage units 11 can be fluctuated in the right and left directions by the rotation of the linking part. In order to form a carrier stage 1 in the endless shape along the extending path of the electric cable, a floorplate is provided on a cable rack formed on the extending path of the electric cable, and the respective stage units 11 under the liked state are sequentially mounted on the floorplate. This method is simple and convenient. Then, after the extension of the electric cable is finished, the floorplate is removed together with the carrier stage 1.</p> |
