A cutter guard assembly for a knife drive of an agricultural farm implement is provided. The cutter guard assembly includes a cutter bar assembly, a window frame, and a floor sheet. The cutter bar assembly has a cutter bar and a reciprocating knife assembly operatively connected to a knife drive. The window frame is rigidly attached to the cutter bar. The window frame includes an opening through which a knife arm of the reciprocating knife assembly extends through. The floor sheet extends rearwardly from the cutter bar and pivots relative to the window frame.

An agricultural vehicle includes a chassis and a header carried by the chassis. The header includes: a frame coupled to the chassis; a cutter bar assembly connected to the frame; a plurality of linkage arms connected to the cutter bar assembly; and a plurality of sacrificial connectors each connected to a respective one of the linkage arms and the frame, each of the plurality of sacrificial connectors including at least one sacrificial region configured to deform or shatter upon an overload force acting on the respectively connected linkage arm.

A cutter guard assembly for a knife drive of an agricultural farm implement is provided. The cutter guard assembly includes a cutter bar assembly, a window frame, and a floor sheet. The cutter bar assembly has a cutter bar and a reciprocating knife assembly operatively connected to a knife drive. The window frame is rigidly attached to the cutter bar. The window frame includes an opening through which a knife arm of the reciprocating knife assembly extends through. The floor sheet extends rearwardly from the cutter bar and pivots relative to the window frame.

An agricultural harvester includes a straw walker arrangement positioned downstream from a threshing and separating system. The straw walker arrangement includes a first straw walker positioned to receive crop material from the threshing and separating system, a second straw walker positioned downstream from the first straw walker, and a rotatable drum positioned between the first straw walker and the second straw walker. The rotatable drum is operable to convey crop material from the first straw walker to the second straw walker.

An agricultural harvester includes a straw walker arrangement positioned downstream from a threshing and separating system. The straw walker arrangement includes a first straw walker positioned to receive crop material from the threshing and separating system, a second straw walker positioned downstream from the first straw walker, and a rotatable drum positioned between the first straw walker and the second straw walker. The rotatable drum is operable to convey crop material from the first straw walker to the second straw walker.

A draper belt system is provided that includes first and second draper belt assemblies. The first draper belt assembly includes first and second rollers, and a draper belt looped around the first and second rollers. The first roller defines a first roller diameter, a first central longitudinal axis, and a first plane extending through the first central longitudinal axis. The second draper belt assembly includes third and fourth rollers, and a draper belt looped around the third and fourth rollers. The third roller defines a third roller diameter dimensioned smaller than the first roller diameter, a second central longitudinal axis, and a second plane extending through the second central longitudinal axis. The third roller of the second draper belt assembly is disposed adjacent to the first roller with the first central longitudinal axis extending parallel to the second central longitudinal axis, and the second plane offset from the first plane.

An agricultural harvester includes a chassis and a grain tank carried by the chassis. The grain tank includes a frame having an opening formed therethrough; a pair of tank cover sections movably associated with the frame such that the tank cover sections can switch between an open position and a covering position relative to the opening of the frame; and at least one actuator linked to at least one of the tank cover sections and configured to selectively provide a switching force. The agricultural harvester further includes a force assistor or a brake linked to one of the pair of tank cover sections and configured to apply an assist force or a braking force, respectively, to one of the pair of tank cover sections but not the other of the pair of tank cover sections.

An agricultural harvester includes a chassis and a grain tank carried by the chassis. The grain tank includes a frame having an opening formed therethrough; a pair of tank cover sections movably associated with the frame such that the tank cover sections can switch between an open position and a covering position relative to the opening of the frame; and at least one actuator linked to at least one of the tank cover sections and configured to selectively provide a switching force. The agricultural harvester further includes a force assistor or a brake linked to one of the pair of tank cover sections and configured to apply an assist force or a braking force, respectively, to one of the pair of tank cover sections but not the other of the pair of tank cover sections.

The pivoting action sickle drive has a low profile allowing incorporation in or below a floor of a header of a plant cutting machine to allow passage of cut plant material thereabout. The drive includes a substantially flat rotatable input element, and a drive arm connected eccentric thereto for eccentric rotation along an epicyclical path. The arm extends to a connection with a pivot arm of a pivot element that connects to a knife arm that drives a sickle knife assembly, such that the pivot element, knife arm and knife assembly will be reciprocatingly driven by the eccentric rotation of the drive arm. A second drive can oppositely drive a second sickle knife assembly, such that opposite forces generated by the drives will cancel. The drives can be packaged in a forwardly tapered or curved enclosure, and the pivot elements can be correspondingly shaped to streamline the drives.

The pivoting action sickle drive has a low profile allowing incorporation in or below a floor of a header of a plant cutting machine to allow passage of cut plant material thereabout. The drive includes a substantially flat rotatable input element, and a drive arm connected eccentric thereto for eccentric rotation along an epicyclical path. The arm extends to a connection with a pivot arm of a pivot element that connects to a knife arm that drives a sickle knife assembly, such that the pivot element, knife arm and knife assembly will be reciprocatingly driven by the eccentric rotation of the drive arm. A second drive can oppositely drive a second sickle knife assembly, such that opposite forces generated by the drives will cancel. The drives can be packaged in a forwardly tapered or curved enclosure, and the pivot elements can be correspondingly shaped to streamline the drives.