A cutter bar lockout mechanism for a header of an agricultural vehicle. The cutter bar lockout mechanism includes a shaft having a first end that is coupled to a frame of the header, and a second end that is positioned either on, within or adjacent a cutter bar support arm (arm) of the header. An upper stop is either mounted to the shaft or forms part of the shaft and is configured to selectively interact with an upper surface of the arm. A lower stop is either mounted to the shaft or forms part of the shaft and is configured to selectively interact with a lower surface of the arm. The shaft is movable relative to both the frame and the arm between an unlocked position and a locked position.

A cutter bar lockout mechanism for a header of an agricultural vehicle. The cutter bar lockout mechanism includes a shaft having a first end that is coupled to a frame of the header, and a second end that is positioned either on, within or adjacent a cutter bar support arm (arm) of the header. An upper stop is either mounted to the shaft or forms part of the shaft and is configured to selectively interact with an upper surface of the arm. A lower stop is either mounted to the shaft or forms part of the shaft and is configured to selectively interact with a lower surface of the arm. The shaft is movable relative to both the frame and the arm between an unlocked position and a locked position.

A locking mechanism for an agricultural header includes a rod configured to extend laterally along the agricultural header and a cam coupled to the rod and configured to engage a respective arm of the agricultural header. The arm is configured to support a cutter bar assembly of the agricultural header, and the arm is configured to rotate relative to a frame of the agricultural header. The rod is configured to rotate in a first direction to a first orientation to engage the cam with the arm to block rotation of the arm relative to the frame, and the rod is configured to rotate in a second direction, opposite the first direction, to a second orientation to disengage the cam from the arm to enable rotation of the arm relative to the frame.

A locking mechanism for an agricultural header includes a rod configured to extend laterally along the agricultural header and a cam coupled to the rod and configured to engage a respective arm of the agricultural header. The arm is configured to support a cutter bar assembly of the agricultural header, and the arm is configured to rotate relative to a frame of the agricultural header. The rod is configured to rotate in a first direction to a first orientation to engage the cam with the arm to block rotation of the arm relative to the frame, and the rod is configured to rotate in a second direction, opposite the first direction, to a second orientation to disengage the cam from the arm to enable rotation of the arm relative to the frame.

A harvesting system for harvesting stalky plants is mountable on a power unit such as an agricultural or construction tractor having hydraulic power and/or a power takeoff (PTO). The system includes at least a reel-based harvesting head configured to cut off at least the tops of the plants and to transport the cut plants laterally of the harvesting system without threshing or otherwise processing the plants. The harvesting head may be mounted on, for example, an upper lift arm assembly or a three-point hitch mechanism of the power unit. If the harvesting head is mounted on the upper lift arm assembly of an agricultural tractor, a second harvesting head may be mountable on the tractor's three-point hitch mechanism beneath the first harvesting head for cutting stalks near their base, gathering the cut stalks, and windrowing the cut stalks behind the second harvesting head.

A constructive arrangement applied to harvesting machines, comprising a cam system that regulates attack angle of reel fingers, a cutting bar fixation using a top tether and roller sets which are attached to rear part of the bar that jointly sustain flexibility of the cutting bar, and a counterfoil shaped to allow base of a gearbox to take a higher position, without changing height of the cutting bar.

A constructive arrangement applied to harvesting machines, comprising a cam system that regulates attack angle of reel fingers, a cutting bar fixation using a top tether and roller sets which are attached to rear part of the bar that jointly sustain flexibility of the cutting bar, and a counterfoil shaped to allow base of a gearbox to take a higher position, without changing height of the cutting bar.

In order to reduce crop losses in the region of the knife bar, a double knife cutting system (11) includes a first part of the knife blades (18a) present on the cutting unit (2) are fastened to a first knife back (20a), this first part of the knife blades (18a) together with the first knife back (20a) forming the upper knife (22), a second part of the knife blades (18b) present on the cutting unit (2) being fastened to a second knife back (20b), this second part of the knife blades (18b) together with the second knife back (20b) forming the lower knife (24), the upper knife (22) and the lower knife (24) being driven in opposite directions, and, of the rocker arms (34), a first rocker arm (34) being drive-connected to the upper knife (22) and a second rocker arm (34) being drive-connected to the lower knife (24).

A cutting unit (1) that has a cutter bar (6) that is operated rigidly or flexibly, depending on the harvest conditions, which can be operated in at least two different operating modes, wherein the cutting unit (1) includes a first sensor assembly (1) disposed on the cutting unit (1) that can be deactivated, which is for operating the cutting unit (1) in a first operating mode, and a second sensor assembly (17) for operating the cutting unit (1) in a second operating mode, wherein, when switching between the at least two operating states, the first sensor assembly (13) or the second sensor assembly (17) is activated without interruption in operation, to execute a distance determination, depending on the selected operating mode.

A cutting unit (1) that has a cutter bar (6) that is operated rigidly or flexibly, depending on the harvest conditions, which can be operated in at least two different operating modes, wherein the cutting unit (1) includes a first sensor assembly (1) disposed on the cutting unit (1) that can be deactivated, which is for operating the cutting unit (1) in a first operating mode, and a second sensor assembly (17) for operating the cutting unit (1) in a second operating mode, wherein, when switching between the at least two operating states, the first sensor assembly (13) or the second sensor assembly (17) is activated without interruption in operation, to execute a distance determination, depending on the selected operating mode.