A header of an agricultural harvester is provided. The header includes a rigid modular frame. The rigid modular frame includes a center section, a first outer section, and a second outer section. The first and second outer sections flank the center section and are rigidly coupled to the center section.

A header of an agricultural harvester is provided. The header includes a frame having a centerline defining a first side and a second side of the frame. A first portion of either the first side or the second side of the frame has a first trapezoidal profile that includes a first pair of legs that run along a longitudinal axis of the frame and a first pair of bases that form a height of the frame. The first pair of legs include a first top leg and a first bottom leg, and the first bottom leg is angled toward the longitudinal axis.

A header of an agricultural harvester is provided. The header includes a frame having a centerline defining a first side and a second side of the frame. A first portion of either the first side or the second side of the frame has a first trapezoidal profile that includes a first pair of legs that run along a longitudinal axis of the frame and a first pair of bases that form a height of the frame. The first pair of legs include a first top leg and a first bottom leg, and the first bottom leg is angled toward the longitudinal axis.

A header assembly for an agricultural harvesting machine comprises a first frame assembly, a second frame assembly that supports a cutter, and is pivotable relative to the first frame assembly, a float cylinder coupled between the first frame assembly and the second frame assembly, an accumulator, and fluidic circuitry that fluidically couples the accumulator to the float cylinder. The fluidic circuitry is configured to provide a first flow of pressurized fluid under pressure to the float cylinder, so the float cylinder exerts a float force on the second frame assembly, and based on a control input that corresponds to a lowering operation of the header assembly, provide a restricted flow of fluid, that is restricted relative to the first flow, between the float cylinder and the accumulator.

A header assembly for an agricultural harvesting machine comprises a first frame assembly, a second frame assembly that supports a cutter, and is pivotable relative to the first frame assembly, a float cylinder coupled between the first frame assembly and the second frame assembly, an accumulator, and fluidic circuitry that fluidically couples the accumulator to the float cylinder. The fluidic circuitry is configured to provide a first flow of pressurized fluid under pressure to the float cylinder, so the float cylinder exerts a float force on the second frame assembly, and based on a control input that corresponds to a lowering operation of the header assembly, provide a restricted flow of fluid, that is restricted relative to the first flow, between the float cylinder and the accumulator.

An agricultural header includes a frame and a mount having a mount opening. The agricultural header also includes an arm configured to rotate about a pivot axis relative to the frame and to support a cutter bar assembly of the agricultural header. In addition, the agricultural header includes a pin coupled to a first element and extending through the mount opening. The first element includes one of the arm and the frame. The agricultural header also includes a fastener configured to non-movably couple the mount to a second element while the fastener is in a locked state and to enable the mount to move relative to the second element while the fastener is in an unlocked state. The second element includes the other of the arm and the frame.

An agricultural header includes a frame and a mount having a mount opening. The agricultural header also includes an arm configured to rotate about a pivot axis relative to the frame and to support a cutter bar assembly of the agricultural header. In addition, the agricultural header includes a pin coupled to a first element and extending through the mount opening. The first element includes one of the arm and the frame. The agricultural header also includes a fastener configured to non-movably couple the mount to a second element while the fastener is in a locked state and to enable the mount to move relative to the second element while the fastener is in an unlocked state. The second element includes the other of the arm and the frame.

An agricultural system obtains a residue map that maps residue characteristics of a field, wherein the residue map is based on data collected at or prior to a first time. The agricultural system obtains supplemental data indicative of characteristics relative to the worksite, the supplemental data collected after the first time. A residue characteristic confidence output, indicative of a confidence level in the residue characteristics indicated by the residue map, is generated based on the residue map and the supplemental data. In some examples, a mobile machine is controlled based on the residue characteristic confidence output.

An agricultural system obtains a residue map that maps residue characteristics of a field, wherein the residue map is based on data collected at or prior to a first time. The agricultural system obtains supplemental data indicative of characteristics relative to the worksite, the supplemental data collected after the first time. A residue characteristic confidence output, indicative of a confidence level in the residue characteristics indicated by the residue map, is generated based on the residue map and the supplemental data. In some examples, a mobile machine is controlled based on the residue characteristic confidence output.

A draper header for harvesting agricultural crops includes a tension draper track assembly for supporting a return run of a draper belt. The draper header includes a header frame with first and second support legs, and the draper belt extends across the first and second support legs for transporting harvested agricultural crops. The tension draper track assembly is operatively coupled between the first and second support legs and includes an elongated draper track. The elongated draper track is secured to one of the first and second support legs and includes a tensioning mechanism coupled to the other of the first and second support legs for tensioning the elongated draper track across the first and second support legs for supporting the return run of the draper belt. The elongated draper track may also be coated in a low-friction material to reduce friction and wear on the return run of the draper belt.