be pulled out to prevent pinching hands. The rollers at both ends of the belt are designed with three-stage idlers, and the exposed part does not rotate, preventing injuries from being caught in the corners of clothes. At the same time, it is ensured that if the loading and unloading personnel accidentally insert their fingers into the gap of the roller, the unpowered roller can be easily ejected from the U-shaped groove, so as to avoid physical injury to the loading and unloading personnel.