一种通过滚筒、滚轮传动的输送设备，应用于机场货运站UL打板，由凸轮机构上下顶升切换滚筒与滚轮高度实现UL集装箱直角进出。

A conveying equipment driven by rollers and rollers, applied to UL boarding in airport freight stations, and the height of the roller and rollers is changed by the cam mechanism to lift up and down to realize the UL container in and out at right angles.