| 摘要 |
PURPOSE: A laser deviation system is provided to increase accuracy in measuring the position of an electric vehicle line and to measure tunnels, bridges and grooves having no shunting space by transporting a light-weight laser deviation system by a worker. CONSTITUTION: A laser deviation system has a module plate(8) of a laser distance measurer on rails(6). A reflecting mirror(14) is set in the center of the two rails, and a zero button of a horizontal distance measurer(15) is pushed to set deviation as zero. If laser beam is emitted to the center of an electric vehicle line, a button is pushed once more and the value displayed on a digital monitor is read. If laser beam is not emitted to the electric vehicle line, the horizontal distance measurer is moved to induce laser beam on the electric vehicle line. If the laser beam of the laser distance measurer is lighted off, the button is pushed again. If laser beam is emitted on the electric vehicle line, the value on the digital monitor is read. At the same time, the value of a vertical distance between the rails and the electric vehicle line, displayed on a monitor of the horizontal distance measurer is read. The electric vehicle line is separated from the center of the rails. Thereby, accuracy in measuring the position of the electric vehicle line is enhanced.
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