| 摘要 |
The present invention is provided along an underground railway safety marker line, and has the advantage of being able to prevent safety incidents whereby a passenger falls either intentionally or unintentionally into the underground railway track, by providing a wire rope which automatically rises and falls depending on whether the train is approaching. More particularly, in the present invention, pulley members comprising a plurality of pulleys of different diameters are simultaneously set in rotation so as to determine a rising/falling distance such that the wire ropes overlap each other or intersect each other, thereby giving the advantage that accidents can be prevented as the wire ropes block passenger entry and exit in accordance with the place where the train is halted. |
