Overhead wire

Abstract

Abstract PURPOSE:To increase both the heat resistance and the flexural rigidity of an overhead wire, by setting an optical fiber wire coated with FRP and providing a metallic twisted wire layer around the optical fiber wire to reinforce the optical fiber wire. CONSTITUTION:An optical fiber wire 1 is obtained by giving a primary coat to a glass fiber and then intertwisting 7 pieces of buffer element 3 containing a buffer layer of silicone resin on the glass fiber. The element 3 has 0.4mm. outer diameter, and FRP4 is coated on the outer circumference of the wire 1. The outer diameter of the FRP4 is set at 2.0mm.. Such fiber wire 1 coated with the FRP4 is set into a metallic tube 5 such as an Al tube, etc. like a seed, and metallic twisted wire layers 2 are set at the outer circumference of the tube 5. The tube 5 has 4.2mm. outer diameter and 0.5mm. thickness, and the diameter is set at 4.2mm. for the element wire forming the layer 2.

Inventors

• 👤 Koji Yoshida
• 👤 宏司 吉田

Bibliographic Details