Harvesting device, having cutting members (14) for separating the crop material and/or having receiving members for collecting the crop material, having at least one transverse conveying device (19) for delivering the separated and/or collected crop material in a transverse conveying direction (20) running transversely to the harvesting direction, wherein the at least one transverse conveying device (19) is configured as a screw conveyor (21), comprising a trommel (22) and spiral conveying elements (23) sticking out from the trommel (22) in its radial direction. The respective screw conveyor (21) is conical or cone shaped, such that an envelope surface (24) of the spiral conveying elements (23) subtends a cone, which expands in conical or cone-shaped manner looking in the transverse conveying direction.