| 摘要 |
<p>Instead of usual chains or belts with protrusions interlocking drive sprockets or gears of positive drive means such as a bucket conveyor, the invention utilizes cables or ropes, one on each side of the buckets. The drive is effected by drive pulleys, each pulley guiding and driving only a single cable and having a smooth peripheral groove engaging the surface of the respective cable so that the drive is solely frictional, without any positive interlock between the drive pulley and the cables, while transverse guidance of each cable is also secured, thus rendering the conveyor lighter, less expensive and capable of operating at higher speed to increase operational capacity of the conveyor. The securement of each bucket to the respective cable is effected by a loop formed by deflecting the cable away from the direction of its pull.</p> |
