| 摘要 |
<p>PURPOSE:To prevent deviation or slackening of an optical communication wire in a longitudinal direction with respect to an aerial twisted conductor by attaching the optical communication wire on the surface of the aerial twisted conductor, and fastening and fixing both by means of a spiral preform rod. CONSTITUTION:An aerial twisted conductor 1 consisting of overhead earth wires is installed in the uppermost parts of steel towers 2 and is made into the contruction wherein plural pieces of strand conductors 3 of aluminum coated steel wires or galvanized steel wires are twisted together. An optical communication wire 4 is attached on the surface of said conductor along the longitudinal direction thereof, which wire 4 consists of an optical fiber core 7 coated with fiber- reinforced plastic provided with a layer 6 coated with fiber-reinforced plastic on the outside circumference of an optical fiber strand 5 having a cushion layer, etc. on the surface and a soft polymer resin material layer 8 having heat resistance coated on the outer side thereof.</p> |
