| 摘要 |
<p>PROBLEM TO BE SOLVED: To distribute telescopic absorption ratio of each string freely by providing an action point for dividing elongation/contraction at a middle point of the arm of a pantograph for dividing elongation/contraction. SOLUTION: A pantograph 5 is provided through rods 3, 4 between the fixed side (cable supporting base 1) and the movable side (bridge side: cable supporting base 2) and an action point for dividing elongation/contraction is provided at a middle point of the arm of the pantograph 5. The action point is arranged to insert a protrusion 51 on the arm of the pantograph 5 slidably into an elongated hole 61 made in a cable supporting member 6 intersecting the arm of the pantograph 5. According to the structure, elongation/contraction can be absorbed little at a limited space in a bridge and absorbed much at an unlimited space and thereby elongation/contraction being transmitted can be divided freely.</p> |
