HEIGHT CONTROL SYSTEM FOR HARVESTING WORKING BODY Russian patent published in 2022 - IPC A01D34/04 A01D34/14 A01D34/28 A01D41/14 A01D34/24 

FIELD: agriculture.

SUBSTANCE: self-propelled harvesting machine, in particular a combine harvester, with a harvesting working body, is made with the possibility of control by means of a height control system of the harvesting working body. The height control system is proposed for the harvesting working body containing a frame, at least one receiving device for a harvested crop, and a knife bar made with the possibility of copying a ground relief and located on a set of load-bearing levers made with the possibility of rotation around at least one horizontal axis and pivotally connected to the frame. Load-bearing levers are made with the possibility of rotation from a given position to be installed before the start of harvesting, between an upper extreme position, which limits the deviation of load-bearing levers in the direction of the receiving device for the harvested crop, and a lower extreme position. The upper extreme position is at the first distance, and the lower extreme position is at the second distance to the specified position. During harvesting, there is a possibility for adaptation of the given position to changing harvesting conditions and/or operating conditions, depending on the deviation of the knife bar, in order to minimize the first distance and maximize the second distance. A height control method is proposed, carried out by the height control system of the harvesting working body containing the frame, at least one receiving device for the harvested crop, and the knife bar made with the possibility of copying a ground relief and located on the set of load-bearing levers made with the possibility of rotation around at least one horizontal axis and pivotally connected to the frame. During harvesting, load-bearing levers are rotated from the given position set before the start of harvesting, between the upper extreme position, which limits the deviation of load-bearing levers in the direction of the receiving device for the harvested crop, and the lower extreme position. The upper extreme position is at the first distance, and the lower extreme position is at the second distance to the given position. The given position, during harvesting, is adapted to changing harvesting conditions and/or operating conditions, depending on the deviation of the knife bar, in order to minimize the first distance and maximize the second distance.

EFFECT: obtainment of a height control system for a harvesting working body.

15 cl, 5 dwg