The subject of the thesis is the study of a device that allows the automation of the stacking process of load carriers or pallet cages using a pre-existing bridge crane. The load handling device is designed to be easily assembled and disassembled on the crane hook. Usage of a pre-existing bridge crane reduces the investment costs compared to building new automated stacking systems. The main goal of the thesis is to create virtual models of the load handling device concepts and simulate their dynamic performance. A prototype was built in previous works on this theme. The prototype uses a reaction wheel oriented on the vertical axis to control the yaw movement and a mobile counterweight to balance non-uniform loads.