In an autonomous traveling unit, a toggle mechanism including a plurality of sliders is provided. In the plurality of sliders, cam followers are provided, respectively. Meanwhile, in a workpiece loading unit, a clamped portion is provided. As a result of the cam followers, which are displaced so as to separate away from each other, entering intersection portions of the clamped portion, the workpiece loading unit is restrained by the autonomous traveling unit.

A vehicle has first and second parts with at least one road wheel. The first part pivotally connects to a connecting member at two spaced apart points to pivot about a first axis relative and the second part pivotally connects to the connecting member at two spaced apart points 18 to pivot about a second axis, which is perpendicular to the second axis, intersecting at a pivot point. A first drive shaft rotatably mounts to the first part and extends in a direction perpendicular to a longitudinal axis of the first part, a second drive shaft rotatably mounts to the second part and extends in a direction perpendicular to a longitudinal axis of the second part. The first and second drive shafts connect by a universal joint so that the two shafts to pivot relative to each other about the pivot point.

An off-highway vehicle has a front chassis portion, a rear chassis portion, a front ground drive system and a rear ground drive system. The front chassis portion has a front axle assembly having a front axle housing and a front axle shaft carrying a front wheel hub. The rear chassis portion has a rear axle assembly including a rear axle housing and a rear axle shaft carrying a rear wheel hub. The front ground drive system includes a front drive wheel mounted to the front wheel hub, a front idler wheel mounted to the front axle housing via a front drive frame member in front of the front drive wheel. The rear ground drive system has a rear drive wheel mounted to the rear wheel hub, a rear idler wheel mounted to the rear axle housing via a rear frame member behind the rear drive wheel.

An articulated vehicle including two wheeled sections hinged together in the middle of the vehicle by a universal movement joint enabling relative pivoting about three axes extending at right angles to each other through the center of the vehicle. A hydraulically operated strut and a hydraulically operated cylinder/jack extend between the two vehicle sections. The strut is universally pivoted at its ends to the two vehicle sections to control the relative pivoting of the two vehicle sections while, the cylinder is trunnion mounted to one end and bolted to the other to permit vertical articulation of the vehicle.

An articulated vehicle. In an exemplary embodiment, an articulated vehicle of the present disclosure comprises a first unit and a second unit articulated together by a joint, wherein the joint comprises a first slew ring arranged to permit the two units to pivot relative to one another about an axis lying substantially perpendicular to a direction of travel of the vehicle in use, and a second slew ring arranged to permit the two units to pivot relative to one another about an axis lying substantially parallel to a direction of travel of the vehicle in use.

A vehicle has first and second parts with at least one road wheel. The first part pivotally connects to a connecting member at two spaced apart points to pivot about a first axis relative and the second part pivotally connects to the connecting member at two spaced apart points 18 to pivot about a second axis, which is perpendicular to the second axis, intersecting at a pivot point. A first drive shaft rotatably mounts to the first part and extends in a direction perpendicular to a longitudinal axis of the first part, a second drive shaft rotatably mounts to the second part and extends in a direction perpendicular to a longitudinal axis of the second part. The first and second drive shafts connect by a universal joint so that the two shafts to pivot relative to each other about the pivot point.

A method for stabilizing at least one frame part of a forest work unit involves determining a moment applied by a payload of the forest work unit to a frame part to be supported and determining a magnitude and direction of at least one support moment needed at least for stabilizing the frame part on the basis of the moment applied by the payload to the frame part to be supported. An arrangement for stabilizing at least one frame part of a forest work unit comprises means for carrying out said determinations.

A hitch for a vehicle includes a first side, a second side opposite the first side, a circular opening between the first side and the second side, and a first axis extending perpendicular to the circular opening. The hitch further includes a first articulation stop on the second side of the hitch and extending from the hitch, parallel to the axis, a cavity within the first articulation stop, the cavity defining a floor, and a deformable stopper within the cavity extending away from the floor of the cavity past a distal end of the first articulation stop. The deformable stopper is configured to deform within the cavity.