A roller wheel tower output shaft featuring two plate cam drives fixed to the input shaft, this separator has a mechanism design with parallel conjugate cams. It achieves the shaft indexing function by rotating the roller wheel tower through the rotation of two plate cams mounted on the input shaft. Suitable for driving wider belt conveyors or for intermittent indexing with longer dwell times. Additionally, the three-piece heavy-duty design is more suitable for rapid and long-distance conveyance, with a longer dwell time than the two-piece version.