| 摘要 |
A dual strand-type transport device of the type which includes sections of chain for loads supported on wheels at at least four points wherein, for each strand, there is provided a section forming a closed circuit of chain which is accommodated inside a longitudinal cavity defined by a rail of quadrangular section, having two tracks which are strictly parallel over the whole of their route, a propellent mechanism constituted by an electric motor with speed-regulating and safety elements, and a transmission element which connects the two tracks, thus ensuring that the two strands maintain a constant radial speed.
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