Combinations are a group of horizontal transport designed mainly for perpendicular change of load movement direction. It is made using two types of devices, e.g. roll and chain conveyors that cross each other. One of the conveyors in lifted using a special lifting structure and this way it puts aside or collects the load so as to apply lateral movement to it.
An undoubted advantage of those devices is the possiblity of arrangement on a small surface and combination of two transport lines of different transport directions.