A ground contour sensing system and method for a vehicle with a mowing head. The system includes a sensor system that measures a ground contour in front of the mowing head, and generates contour measurement signals; and a controller that determines whether to move the mowing head based on the contour measurement signals, and generates movement commands for the mowing head when it determines to move the mowing head. The mowing head can include tilt and lift cylinders, and the controller can determine whether to move the mowing head using the tilt or lift cylinders. The sensor system can include a pivot arm that moves in response to changes in the ground contour, and an angle sensor that measures an angle of the pivot arm. There can be one or more sensor systems positioned between the right and left sides of the mowing head.

A ground contour sensing system and method for a vehicle with a mowing head. The system includes a sensor system that measures a ground contour in front of the mowing head, and generates contour measurement signals; and a controller that determines whether to move the mowing head based on the contour measurement signals, and generates movement commands for the mowing head when it determines to move the mowing head. The mowing head can include tilt and lift cylinders, and the controller can determine whether to move the mowing head using the tilt or lift cylinders. The sensor system can include a pivot arm that moves in response to changes in the ground contour, and an angle sensor that measures an angle of the pivot arm. There can be one or more sensor systems positioned between the right and left sides of the mowing head.

According to an embodiment of the disclosed subject matter, a lift assembly for a lawnmower can include a mower housing configured to house blades for cutting vegetation. A frame can be located above the mower housing, the frame including two longitudinal extending frame members, and at least one pivot bar extending between the two longitudinal extending frame members. A linear actuator can be located adjacent the frame members and connected to the pivot bar such that actuation of the linear actuator causes the pivot bar to rotate about a rotational axis of the pivot bar. At least one cam can be connected to the pivot bar so as to rotate with the pivot bar, the cam including a mower housing attachment element that supports the mower housing such that rotation of the cam varies a distance between the frame and the mower housing.

A boom mower attachment that moves a cutting mechanism in a first movement, a second movement, and a third movement by only using two motions of a single control and method of use thereof is provided. The boom mower may include a frame, a boom assembly carried by the frame, a cutting mechanism operably engaged with the boom assembly, and at least one translation assembly operably engaged with the boom assembly and the cutting mechanism that moves the cutting mechanism in one or more of the first movement, the second movement, and the third movement. An implement control system including a control, at least one function switching mechanism, and an implement is also provided. Activation of the control is operative to move the implement in a first mode, a second mode, and a third mode by only using two motions of the control.

A work unit to be attached to a lower side of a work vehicle that includes a wheel includes a work portion, a housing that covers the work portion, a bridge portion that is provided above the housing, auxiliary plates that change their positions between a state of being housed in the bridge portion and a state of protruding from the bridge portion, a linkage mechanism that is provided in the bridge portion and is connected to the auxiliary plates, and an operation tool for operating the linkage mechanism. As a result of operating the operation tool, the linkage mechanism is folded or unfolded, and positions of the auxiliary plates are changed between the state of being housed in the bridge portion and the state of protruding from the bridge portion.

The agricultural harvester comprises a header. The header includes a frame, a control shaft connected to the frame, a flex arm, a linkage assembly and a cutter bar connected to the flex arm. The linkage assembly is movable between a first position and a second position. The linkage assembly includes a first end pivotably connected to the control shaft and a second end connected to the flex arm.

The agricultural harvester comprises a header. The header includes a frame, a control shaft connected to the frame, a flex arm, a linkage assembly and a cutter bar connected to the flex arm. The linkage assembly is movable between a first position and a second position. The linkage assembly includes a first end pivotably connected to the control shaft and a second end connected to the flex arm.

Harvesting machines and agricultural harvesting heads for harvesting machines are disclosed herein. A harvesting machine includes a main frame, a cutter assembly, and a conveyor system. The cutter assembly is pivotally coupled to the main frame. The cutter assembly includes a cutter bar configured to sever crop material adjacent to the ground and a cutter frame configured to support the cutter bar for pivotal movement relative to the main frame. The conveyor system is coupled to the main frame and configured to convey severed crop material in a rearward direction away from the cutter bar toward a central feed drum of the harvesting machine.

Harvesting machines and agricultural harvesting heads for harvesting machines are disclosed herein. A harvesting machine includes a main frame, a cutter assembly, and a conveyor system. The cutter assembly is pivotally coupled to the main frame. The cutter assembly includes a cutter bar configured to sever crop material adjacent to the ground and a cutter frame configured to support the cutter bar for pivotal movement relative to the main frame. The conveyor system is coupled to the main frame and configured to convey severed crop material in a rearward direction away from the cutter bar toward a central feed drum of the harvesting machine.

A harvesting system for harvesting stalky plants is mountable on a power unit such as an agricultural combine. The harvesting system may have both an upper harvesting head that cuts off the tops of the plants and the directs seed-bearing portions of the plant to the combine's thresher, and a lower harvesting head cuts the stalks near the ground and discharges the stalks in two or more windrows. In order to increase throughput, the upper harvesting head may be raisable and lowerable relative to the combine's feeder housing. To accommodate such adjustment, a discharge conveyor of the upper harvesting head may extend at an adjustable angle relative to the feeder housing. The lower harvesting head may have draper belts arranged to discharge the stalks in two or more, and more typically three or more, laterally spaced, parallel windrows.