Pulling machine assembly for harvesting e.g. beet, has maintenance unit i.e. jack and height sensor, maintaining depth of extraction unit i.e. ploughshares and discs, at set point value and height of conveying unit at another valve

摘要

The assembly has an extraction unit i.e. fixed ploughshares (17) and rotative discs (19) for extracting products, and a conveying unit (27) for conveying products. A maintenance unit i.e. jack (21) and height sensor (23), maintain a depth of the extraction unit at a set point value. The conveying unit is movable with respect to the extraction unit, and the maintenance unit maintains the height of the conveying unit at a predetermined set point value. An independent claim is also included for a method for controlling a ground product harvesting machine assembly.