A chassis-height adjustment system for selectively raising and lowering a chassis relative to a ground surface includes a plurality of support assemblies supporting a chassis on respective ground-engaging elements. Each support assembly has a height adjustment actuator. Each height position sensor senses an adjustment position one of the height adjustment actuators and generates a height signal. Each of the support assemblies may be mounted to the chassis by a track-width adjustment mechanism having a track-width adjustment actuator. The height adjustment system is controlled in a manner to synchronize each height adjustment actuator with the other actuators. Adjustment of one or more height adjustment actuators is slowed or stopped in the event that other actuators need to catch up. The track-width adjustment actuators may shift the position of the associated ground-engaging element laterally relative to the chassis to keep the ground-engaging elements from sliding laterally as the chassis height changes.

The invention relates to a self-propelled agricultural machine, for example a self-propelled merger, said self-propelled agricultural machine being provided with at least one motor, at least one elongated unit for carrying out, in use, an agricultural operation on the land, a first wheel axle and a second wheel axle located at a distance from the first wheel axle, wherein the first wheel axle and/or the second wheel axle is/are to be driven by the motor for moving the agricultural machine, wherein the elongated unit is movable from a transport position to a working position and vice versa, so that the maximum width of the self-propelled agricultural machine in the unit's transport position is less than in the unit's working position.

A tracked undercarriage for oscillating and retractable operating machines includes a main frame, a track unit mounted on each of two opposite sides of the main frame, and a sliding frame mounted on each of the two opposite sides of the main frame, Each sliding frame has the dual function of translating the corresponding track unit with respect to the main frame and to vary the inclination of the track unit with respect to the main frame.

In a work vehicle, a safety frame includes a base, a pair of left and right lower frames extending from the base and fastened to a pair of left and right rear wheel fenders, and an upper frame having an inverted U shape connecting upper portions of the pair of left and right lower frames. The base is removably fastened to a rear axle case. A length in a width direction between a pair of left and right rear wheels is changed by changing a length in a width direction of the upper frame and changing a fastening position of the base to the rear axle case.

An agricultural machine such as a high clearance sprayer is provided with a frame capable of supporting wheels at a variable tread width. The frame includes a pair of cross members, both of which have slider receivers. The machine also includes a first axle slider for a first side and a second axle slider for a second side. The machine may also have a slider to frame connection arrangement that includes a reduced friction zone at the slider receivers that facilitate telescopic movement of the axle sliders. The slider to frame connection may also have at least one fixed slider wear pad in a fixed position within the reduced friction zone and at least one movable slider wear pad movably arranged within the reduced friction zone.

A self-propelled agricultural sprayer can be configured with a spray boom, adjustable width wheels and rear wheel spray nozzles arranged over rear wheels of the adjustable width wheels, so that the rear wheel nozzles ensure proper coverage of an agricultural field behind the rear wheels according to location. A control system can determine front wheel nozzles disposed on the spray boom that are counterpart spray nozzles to the rear wheel nozzles based on a width of the wheels, and implement activation/deactivation states of the rear wheel nozzles based on the counterpart front spray nozzles. The activation/deactivation states of the spray nozzles can be determined by geographic location of the machine using a UPS location. The rear wheel nozzles can be arranged with respect to fenders of the rear wheels, so that the rear wheel nozzles move laterally with the rear wheels.

A row-crop tractor including a tractor frame structure having a front portion and a rear portion. Two front wheels are rotatable mounted to the front portion of the tractor frame structure. At least a rear wheel is mounted to the rear portion of the tractor frame structure. A drive mechanism is mounted to the front portion of the tractor frame structure and connected to the two front wheels for controllably driving the same in dependence upon a control signal received from an operator of the row-crop tractor such that one front wheel is driven independent from the other. A front farm implement connecting mechanism is disposed at a front end of the front portion of the tractor frame structure and an operator seat mounted to the front portion of the tractor frame structure in close proximity to the front end of the front portion of the tractor frame structure such that the operator of the row-crop tractor is enabled to reach a front farm implement connected to the front farm implement connecting mechanism.

A working machine comprising a chassis; first and second elongate support members, each elongate support member being pivotally coupled to the chassis at a respective pivot point; a first wheel assembly coupled to the first elongate support member and a second wheel assembly coupled to the second elongate support member; a first linear actuator coupled to the first elongate support member and a second linear actuator coupled to the second elongate support member, wherein the elongate support members are movable by operation of the actuators between a stowed configuration and a deployed configuration. A distance between the first and second wheel assemblies is greater in the deployed configuration than in the stowed configuration. The first and second linear actuators are pivotally coupled to the chassis along a common pivot axis.

The vehicle according to the invention has a frame, a first running gear and a second running gear, wherein the two running gears are arranged on opposite sides of the frame and are mounted so as to be displaceable relative to the frame by means of hydraulic cylinders for changing the track width. Each hydraulic cylinder here includes a component fixed to the frame and a component which can be displaced relative to the frame, wherein the first and second running gears are each fastened to the displaceable component of the hydraulic cylinders, and the displaceable component of the hydraulic cylinders is displaceably guided in a guide on the frame, wherein the guide is designed to transmit forces between the displaceable component and the frame transversely to the displacement direction of the displaceable component.

An agricultural vehicle includes a chassis, a plurality of ground-engaging elements configured to support the chassis above a ground surface, and a plurality of support assemblies supporting the chassis on the ground-engaging elements. Each support assembly includes a height-adjustment actuator. A controller is configured to adjust the height-adjustment actuators independently of one another and transfer a load from a first ground-engaging element to other ground-engaging elements. A method of operating an agricultural vehicle includes receiving a command to transfer a load from a first ground-engaging element to other ground-engaging elements, adjusting at least one height-adjustment actuator, and transferring a load from the first ground-engaging element to the other ground-engaging elements.