Abstract: A device for driving load conveyors or transporters in the form of a driving and guiding means (4), integrated in a line of conveyors or transporters (1 and 2) and extending along the longitudinal axis of said conveyors or transporters (1 and 2), perpendicularly to their plane and essentially formed by the combination of a driving belt (5), arranged along at least one longitudinal edge or in the extension of longitudinal edges of at least one conveyor or transporter (1 and 2) or two successive conveyors or transporters (1 and 2), and of a guide applying (6) the loads against the driving belt (5), arranged along the longitudinally opposite edges. Particular applicability is in the field of conveying by means of pallet conveyors or transporters, in particular with change of rate of transport and/or of level between conveyors.