Abstract: The system has a closure element at the lower end of a set-down cone to close the lower end of a gravity chute and a device with at least a first traction element at various distances from the lower edge of the gravity chute. The system possesses a high loading capacity and high abrasion resistance, because at least the lowest hopper has an approximately rectangular cross-section in the plane normal to the longitudinal direction of the gravity chute. The first traction element is located along a straight line in the delivery channel and is attached to the closure element in such a way that it can be guided in the open space delimited by the set-down cone and the lowest hopper.