The belt of conveyor of concrete batching plants, after being used for a period of time, slides location frequently, especially in rainy days. That’s because the rain increases water in aggregates and the inner side of belts, which further reduces force of friction between belts and conveying rolls, and correspondingly the torque sent by rolls to the belt decreases to such a degree that it’s smaller than needed for aggregate delivery. Eventually that leads to location sliding of belts.