| 摘要 |
PROBLEM TO BE SOLVED: To remarkably improve the working efficiency of the high lift work by guiding the laser beam of the specified wavelength by an optical fiber, and irradiating the laser beam on a surface of a rusted part to easily remove the rust. SOLUTION: In removing the rust on a transmission line steel tower 10, a working vehicle 12 is arranged in the vicinity of the transmission line steel tower 10. A solid laser beam generator 14 is mounted together with a power unit or the like on the working vehicle 12, and an optical fiber 16 is connected to the laser beam generator 14. The laser beam L is emitted from a tip of the optical fiber 16 by driving the laser beam generator 14, and a surface of the transmission line steel tower 10 is irradiated therewith. A reflection factor measuring device 18 is installed corresponding to the irradiation position of the laser beam L to measure the reflection factor at the place irradiated with the laser beam L by the measuring device 18. When the surface of the transmission line steel tower 10 in which the rustproof treatment such as coating and plating is performed on the surface of a base metal is irradiated with the laser beam L, more optical energy is absorbed by the rusted part from the difference in the reflection factor between the rusted part and the base metal, and the rust is turned into small broken pieces, and selectively removed. |
