| 摘要 |
PROBLEM TO BE SOLVED: To positively install an on-track moving body such as an arch centre even if it moves. SOLUTION: A stopper 1 for an on-track moving body 4 is provided with a slant face 11 formed by cutting off one end side of a rectangular solid. The slant face 11 is provided in such a way that the height of one side face 13 of the stopper 1 is lower than the height of a track 3. The stopper 1 moves in association with the movement of the on-track moving body 4 because of being tied to the rear of the on-track moving body 4 so that the end face 13 faces the on-track moving body 4 side. The stopper 1 can therefore maintain the distance to the on-track moving body 4 positively to the appropriate value. In the case of the on-track moving body 4 running reversely, the stopper 1 abuts on the on-track moving body 4 at the slant face 11 since the end face 13 is lower than the track 3, so that the stopper 1 positively stops the reversely running on-track moving body 4.
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