| 摘要 |
<p>PURPOSE:To effectively absorb the expansion and contraction of a plurality of power cables by a method wherein one or more parts of right-angled bent corners of the power cables laid inside a horizontal plane are fixed and trapezoidal link mechanism which includes a parallelogram and whose base is expanded and contracted are installed at the outside and the inside of the cables. CONSTITUTION:When six stripes of power cables 1 on the same horizontal plane are bent to be right-angled, one end is fixed to a fixed-side cleat 3 and the other end is fixed to a cleat 3 on a movable stand 2. A link mechanism A 5a in a trapezoid ABCDE including a parallelogram ABCE is formed at the outside of the cables 1. Points B, C are displaced regularly and the parallelogram is kept, and an arm between points DE is expanded and contracted at a concentric cylinder 8a. A similar link mechanism A 5b is installed at the inside of the cable 1 on the innermost side. Link mechanisms B 6a to 6b which have connected three arms at the halfway parts and which are composed of points FGHI are arranged at the cable other than the cable on the innermost side. In addition, two rods 7a, 7b are passed through intermediate pins in the link mechanisms A, B and connected. Thereby, the expansion and contraction of the power cables can be absorbed stably for a long time.</p> |
