Drive system for an infeed conveyor of a harvester

摘要

The invention relates to a drive system for an infeed conveyor (22) of a harvester (10), having an adjustable hydraulic pump (66), the flow rate and flow direction of which can be adjusted by means of a first actuator (76), said hydraulic pump being connected to a hydraulic motor (68) which drives the infeed conveyor (22). A controller (70) is connected to a foreign-body detection device (108) and to a first valve (90) for controlling the actuator (76) that controls the hydraulic pump (66). The controller (70) controls the first valve (90) at least for a short time by reversing the flow direction is a foreign body appears. In addition, it is suggested that the hydraulic motor (68) has an adjustable displacement volume, and that the controller (70) increases the hydraulic motor displacement volume (68) is a foreign body appears.

主权项

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.