It adopts a frame structure, consisting of a frame, movable frame, guide frame, lifting and lowering fork, and driving device. It has two main functions: collection and release. It does not have horizontal conveying capabilities and needs to be used in conjunction with the automated warehouse conveyor system equipment. Collection involves stacking the empty pallets sent into the system in the designed quantity for one-time transportation. Release involves sequentially replenishing individual pallets when an empty pallet is needed at the imbound port.