Forage harvester with a magnetic assebmly

A forage harvester comprising an edge sharpness detection device for detecting a degree of edge sharpness of a cutting mechanism. The cutting mechanism comminutes a stream of harvested material, with a material inflow area being defined where the cutting blades interact with the shear bar to comminu...

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Bibliographic Details
Main Authors Kettelhoit, Boris, Brune, Markus, Huster, Jochen, Neitemeier, Dennis, Heitmann, Christoph
Format Patent
LanguageEnglish
Published 07.09.2021
Subjects
AGRICULTURE
ANIMAL HUSBANDRY
DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
FISHING
FORESTRY
HARVESTING
HAY OR STRAW PRESSES
HUMAN NECESSITIES
HUNTING
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
MOWING
PHYSICS
PROCESSING OF HARVESTED PRODUCE
TESTING
TRAPPING
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Summary:A forage harvester comprising an edge sharpness detection device for detecting a degree of edge sharpness of a cutting mechanism. The cutting mechanism comminutes a stream of harvested material, with a material inflow area being defined where the cutting blades interact with the shear bar to comminute the harvested material. The edge sharpness detection device excites one or more magnetic circuits, with the respective magnetic circuit being closed by the respective cutting blade during rotation of the cutter drum once one of the cutting blades passes the magnetic assembly. The edge sharpness detection device detects the magnetic flux in the respective magnetic circuit and, based on a detected change, determines a degree of edge sharpness of the respective cutting blade. Further, the magnetic flux of the magnetic circuit may be guided lengthwise in the cutting blade at least along a longitudinal section of the respective cutting blade.
Bibliography:Application Number: US201816217537