| 摘要 |
A belt conveyor comprises an endless, curved conveyor belt, which has at least one traction-force-absorbing member along the length of the conveyor belt and one belt-carrying member at each longitudinal edge of the conveyor belt, support rollers, which by way of the belt-carrying members support the conveyor belt over the path thereof, and at least one first and one second drive pack, which are each provided with at least one drive roller, which is adapted to transmit a traction force to the traction-force-absorbing member. The traction forces of the first and the second drive pack are individually controllable. The belt conveyor further comprises a detecting means provided at least at the first drive pack and adapted to detect the belt tension in the conveyor belt adjacent to the drive pack, and a control means for individually controlling the traction force of the first drive pack in dependence on a change in the belt tension detected with the aid of the detecting means in order to keep the belt tension on the exit side of the first drive pack above a predetermined minimum value. |
