US Patent 11008169 Driving device for a roller conveyor

A mobile driving device for driving a roller conveyor includes a chassis frame, a traction device mounted to the chassis frame, wherein the traction device is adapted to move the chassis frame on a supporting surface, a first drive unit mechanically coupled to the traction device to transmit a driving force to the traction device for moving the chassis frame on the supporting surface, a roller driving device mounted to the chassis frame, wherein the roller driving device is adapted to be mechanically coupled to one or a plurality of rollers of the roller conveyor, and a second drive unit mechanically coupled to the roller driving device for transmitting a conveying force to the roller driving device.