ULD为Unit Load Device的缩写，是航空运输中用来装载货物的集装设备，可以是集装箱，也可以是集装板和集装网组合。

昌恒智能ULD液压升降台：一种带液压升降功能的滚筒输送设备，应用于机场货运站UL打板，由液压缸配合剪叉机构升降改变滚筒输送面高度，可满足不同高度UL集装箱的打板。

A roller conveying equipment with hydraulic lifting function, applied to UL boarding of airport freight station. The height of the roller conveying surface is changed by the hydraulic cylinder and the scissor mechanism, which can meet the boarding of UL containers of different heights.