The conveyor frame is bent, and the straightness and levelness of the entire length range of the conveyor should be checked and adjusted. The material loading position is not correct, that is, the material blocks are uneven on the conveyor belt and the weight is unbalanced. The feeding position should be improved. Sometimes it deviates, sometimes it doesn’t. Outdoor transportation is generally caused by wind force, and windproof covers and self-adjusting center rollers should be installed. Caused by the lowering of the position of one side roller. The left and right rollers should be adjusted to the same height.