| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrosion-resistant structure of an overhead power line support device capable of preventing the insulation deterioration of the overhead power line support device, and capable of reducing maintenance costs.SOLUTION: A corrosion-resistant structure 11 prevents corrosion of an overhead power line support device 3 for supporting an overhead power line. A drain part 11a is formed, on a surface of the protective cover 6, in a convex shape on the entire outer periphery of both end parts of this protective cover 6 integrally with this protective cover 6. The protective cover 6 is cut in a predetermined length (for example, in substantially the same length as the outer peripheral of a horizontal column 5) according to an outer diameter of the horizontal column 5, and is wound and installed on a surface of the horizontal column 5. When a corrosion product C generated on a surface of an overhead power line metal fitting 9 flows out to the protective cover 6 by rainwater and tunnel water leakage, this corrosion product C drips downward from the drain part 11a, and the drain part 11a prevents flow-out of the corrosion product C to the horizontal column 5 from the protective cover 6. |
