| 摘要 |
A conveyor comprising a plurality of self-propelled carriers (2) adapted to run along a rail (1), the rail (1) having a first drive wheel (33) bearing surface (1a) facing upward and a plurality of downward teeth (20) formed at least at a gradient portion of the rail, each of the carriers (1) having a first drive wheel (33) rollable on the wheel bearing surface of the rail (1a), a first electric motor (36) for driving the first drive wheel (33), a gear (46) meshable with the teeth of the rail and a second electric motor (43) for driving the gear (46). |
