STRINGING METHOD OF OPTICAL FIBER OVERHEAD EARTH WIRE

PURPOSE:To make the stringing work efficient by extending an overhead earth wire while passing a loop-shaped extension circuit formed in an iron tower and stopping extending when a predeterminate part of optical fiber connection reaches a required position of the loop-shaped extension circuit and applying the excess length part to drawing-down for optical fiber connection to connect an optical fiber and retaining the earth wire on the iron tower. CONSTITUTION:Metallic wheels 3 and 3 and caterpillars 4 and 4 are arranged in an iron tower 2 which is the drawing-down connection part of the optical fiber overhead earth wire, and a loop-shaped extension circuit 10 is formed. Before extension, a messenger wire is delivered through the loop-shaped extension circuit 10, and an optical fiber overhead earth conductor 1 is extended through the extension circuit 10. When the end part of the temporarily connected optical fiber overhead earth wire 1 reaches, fore example, the position near the lowest point of the extension circuit 10, extending is stopped, and the optical fiber overhead earth wire 1 is tensed while storing a line taken in the loop- shaped extension circuit 10 as the excess length part as it is, and the optical fiber is connected to this stored excess length part.