DEVICE FOR AUTOMATICALLY CONTROLLING THE WORKING POSITION OF THE HARVESTING ASSEMBLY OF HARVESTING MACHINES IN PARTICULAR COMBINE HARVESTERS

摘要

This invention relates to a device for the automatic control of the working position of equipment such as a pick-up on harvesting machines. /P P The machine comprises two sensors combined with the articulation axis provided between the pick-up and a harvesting assembly connected to the chassis of the machine. These sensors react to variations in the angular position of the pickup relative to the harvesting assembly on which it is mounted, from a predetermined relative angular position. The sensors are connected to a control circuit. They include magnetically actuated contactors. These are, for the two sensors, mounted in parallel for controlling the lifting, but in series for controlling the lowering. /P P An arrangement of this type can be used in particular on combine harvesters.