The rotary kiln of our company's No.2 production line had not been able to bounce up and down freely for a long time, resulting in serious wear on the surface of the pier supporting wheel, aggravating the wear between the wheel belt and the backing plate retaining iron, so the supporting wheel needs to be adjusted. Before adjustment, the collected data of each group of supporting rollers was analyzed to determine the adjustment scheme of supporting rollers; during the adjustment, the value of the dial indicator and the temperature change of each group of supporting rollers was recorded, and the amount of each adjustment was ≯0.1mm. After adjustment, the temperature of each supporting wheel of the rotary kiln is stable, the meshing operation of the wheel belt, supporting wheel and large and small gears is normal, and the rotary kiln can bounce up and down freely.