Shearbar attachment and adjustment apparatus and method

Details Shearbar attachment and adjustment apparatus and method Shearbar attachment and adjustment apparatus and method

B - Operations, Transporting

02

C

146/3

B02C 18/16 (2006.01) A01F 29/09 (2010.01) A01F 29/06 (2006.01) B26D 7/26 (2006.01)

Patent

CA 1288318

SHEARBAR ATTACHMENT AND ADJUSTMENT APPARATUS AND METHOD ABSTRACT OF THE DISCLOSURE A shearbar attachment and adjustment apparatus is adapted to apply clamping forces to a shearbar in a forage harvester at first locations on opposite ends of the shearbar. The clamping forces prevent the shearbar from backing away from a rotary cutterhead in the forage harvester during chopping of crop material by passing cutting edges of knives on the periphery of the cutterhead close to the cutting edge of the shearbar. Also, the apparatus is adjustable to apply pulling forces on the shearbar at second locations on its opposite ends which are offset inwardly from the first locations. Application of pulling forces at these inward locations relative to the outward locations of the clamping forces tends to compensate for the effect of the convex shape of the shearbar cutting edge by causing bowing of the shearbar at the second locations to provide a more uniform clearance between the cutting edge of the shearbar and the cutting edges of the cutterhead knives.

563783

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