Feed roll control system for a forage harvester

Details Feed roll control system for a forage harvester Feed roll control system for a forage harvester

2009-05-19

2011-11-15

Fabian-Kovacs, Arpad (Department: 3671)

Harvesters

Motorized harvester

Having driven means for handling or treating crop

Reexamination Certificate

active

08056309

ABSTRACT:
A system to control the position of one or more feed rolls in a forage harvester. The system includes at least one fixed feed roll arranged to rotate around a rotation axis which is fixed with respect to a chassis of the harvester, and in cooperation with the at least one fixed feed roll, a movable feed roll arranged to rotate around a rotation axis which is movable towards or away from the corresponding fixed roll. The system determines various parameters, including input data for the driving force exerted on the rolls, position of the movable feed roll, and rotational speed of the drive shaft, and inputs the data to a control unit, which provides commands to one or more valves and to one or more throttles to control the movable feed roll via the hydraulic piston/cylinder arrangements.

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