| 摘要 |
PROBLEM TO BE SOLVED: To provide a supporting conductor integral type rigid electric overhead line easy to carry out erecting work and maintenance thereof and to maintain favourable electrically conductive performance for a long period of time. SOLUTION: The rigid electric overhead line 1 is constituted by continuously hanging and supporting a lengthy electric overhead wire rod 2 made of well electrically conductive metal such as copper, copper alloy, etc., on a ceiling S of a tunnel by a suspension metal fitting H. A supporting plate part 3 and a vertical plate part 4 are provided on the electric overhead wire rod 2. An abrasion allowable range 4a by sliding of a pantagraph is provided on a lower edge with a projected line 4b of the vertical plate part 4 as a border. An extended part 4c and a connecting part 4d are provided on both end parts of the electric overhead wire rod 2. The electric overhead wire rods 2 are connected to each other by mating ends 3a of the support plate parts of the electric overhead wire rods 2 ajoining to each other with each other, polymerizing the connecting parts 4d with each other and fastening them by nuts 5. Reinforcing members 6 are polymerized so as to run along the supporting plate parts 3 of both of the electric overhead wire rods 2, fastened and fixed by bolts and nuts 7.
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