Patent ID: 8869522
Filing Date: 2014-10-28
Classification: A01D

Abstract:
1. A drive system for an infeed conveyor of a harvester, comprising: an adjustable hydraulic pump, the flow rate and flow direction of which can be adjusted by means of a first actuator that can be controlled with a first valve, a hydraulic motor that is connected to the hydraulic pump via a hydraulic fluid conduit and functionally connected to the infeed conveyor, and a control that is connected to a first valve and a foreign object detector and can be operated in such a way that it causes the first actuator to adjust the flow rate of the hydraulic pump to zero by means of the first valve when a foreign object is detected by the foreign object detector, characterized by the fact that the control is designed for at least briefly controlling the first valve in the sense of a reversal of the flow direction when a foreign object is detected by the foreign object detector, wherein the control can be operated in such a way that the first valve is controlled in the sense of a reversal of the flow direction for a period of time that is chosen such that the hydraulic motor instantly stops, but does not turn in the opposite direction.