The traction force of the belt conveyor is transmitted through the friction between the drive roller and the belt. Therefore, the belt must be tensioned by a tensioning device to ensure that the belt has a certain initial tension at the point where the drum separates.

⑵ The belt runs together with the cargo on the roller conveyor. The belt serves both as a traction mechanism and a load-bearing structure, with no relative motion between the cargo and the belt, thereby eliminating frictional resistance between the belt and the cargo during operation. As the roller conveyor is equipped with rolling bearings, the friction between the belt and the roller is rolling friction, significantly reducing the running resistance and thus decreasing power consumption and increasing the transportation distance. The牵引 force transmission capacity of a belt conveyor is determined by the belt tension, the angle of wrap of the belt around the drive roller, and the coefficient of friction between the belt and the drive roller. To ensure that the belt of the conveyor does not slip on the drive roller and operates normally, appropriate measures should be taken in production practice based on different situations. To enhance the transmission capacity of traction force, efforts can be made from the following aspects:

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