| 摘要 |
<p>The system has a handrail (20) which is constituted of portions (20a, 20b) and disposed along the length of each longitudinal side of a conveyor belt (8). A detection unit (21) is inserted in the handrail at an output end (11) of the conveyor belt. The unit (21) is connected to a motor controlling circuit in order to displace an upper strand (9) of the conveyor belt.</p> |
