A device including at least one motorized conveyor for conveying a flow of harvested crop between an upstream end and a downstream end of the conveyor along a longitudinal direction. The device further including at least one sensor that monitors a longitudinal inclination of the device relative to a nominal orientation of the device. The device computes a conveyor speed based on the monitored longitudinal inclination, the conveyor speed being adapted to maintain conveying kinematics of the harvested crop independent from the longitudinal inclination； and the device operates the motorized conveyor at the computed conveyor speed.
