Embodiments include a pitch hydraulic system for a dual cabin articulated vehicle. The pitch hydraulic system includes an energy recovery function to harnesses hydraulic energy during vehicle mobility. A directional valve can be activated to allow movement of first and second pitch cylinders into either a “pitch up” or “pitch down” position. The pitch system can alter the stiffness of the unit to improve safety, stability and ride comfort.

A frame steered vehicle (10) has a front chassis part (12) and a rear chassis part (13). An articulated coupling (11) connecting the front chassis part (12) and the rear chassis part (13) comprises a pair of spaced-apart rigid link arms (14, 15) mounted between a rear end of the front chassis part (12) and a front end of the rear chassis part (13), that is the link arms (14, 15) are connected at or adjacent the rear end of the front chassis part (12) and at or adjacent the front end of the rear chassis part (13). The link arms (14, 15) are offset to each side of the central longitudinal axis (AB) of the vehicle (10). Each link arm (14, 15) is pivotally connected to the front chassis part (12) by a pivot connector (16, 17) and pivotally connected to the rear chassis part (13) by a pivot connector (18, 19). The link arms (14, 15) are arranged in the form of an isosceles trapezoid. Operation of steering rams (6) extending between the front chassis part (12) and the rear chassis part (13) causes the vehicle parts (12, 13) to pivot relative to each other for steering the vehicle (10).

A frame steered vehicle (10) has a front chassis part (12) and a rear chassis part (13). An articulated coupling (11) connecting the front chassis part (12) and the rear chassis part (13) comprises a pair of spaced-apart rigid link arms (14, 15) mounted between a rear end of the front chassis part (12) and a front end of the rear chassis part (13), that is the link arms (14, 15) are connected at or adjacent the rear end of the front chassis part (12) and at or adjacent the front end of the rear chassis part (13). The link arms (14, 15) are offset to each side of the central longitudinal axis (AB) of the vehicle (10). Each link arm (14, 15) is pivotally connected to the front chassis part (12) by a pivot connector (16, 17) and pivotally connected to the rear chassis part (13) by a pivot connector (18, 19). The link arms (14, 15) are arranged in the form of an isosceles trapezoid. Operation of steering rams (6) extending between the front chassis part (12) and the rear chassis part (13) causes the vehicle parts (12, 13) to pivot relative to each other for steering the vehicle (10).

Vehicles, control systems for vehicles, and methods of operating vehicles are disclosed herein. A vehicle includes a frame structure, a front section, a rear articulation section, and a control system. The front section is coupled to the frame structure and to a front plurality of wheels supported for movement on a front axle. The rear articulation section is coupled to the frame structure and to a rear plurality of wheels supported for movement on a rear axle. The rear articulation section is pivotally coupled to the front section via an articulation joint and arranged opposite the front section along a vehicle axis. The control system is coupled to the frame structure and includes a mode selector configured to provide input indicative of a mode selected by an operator in use of the vehicle and a controller communicatively coupled to the mode selector.

Vehicles, control systems for vehicles, and methods of operating vehicles are disclosed herein. A vehicle includes a frame structure, a front section, a rear articulation section, and a control system. The front section is coupled to the frame structure and to a front plurality of wheels supported for movement on a front axle. The rear articulation section is coupled to the frame structure and to a rear plurality of wheels supported for movement on a rear axle. The rear articulation section is pivotally coupled to the front section via an articulation joint and arranged opposite the front section along a vehicle axis. The control system is coupled to the frame structure and includes a mode selector configured to provide input indicative of a mode selected by an operator in use of the vehicle and a controller communicatively coupled to the mode selector.

The present invention relates to a method (M1) performed by a control device (100) for controlling driving operation of an articulated tracked vehicle (V). Said articulated tracked vehicle (V) comprises a drive arrangement (120) for operating the vehicle. The articulated tracked vehicle (V) comprises a first vehicle unit (V1) and a second vehicle unit (V2) steerably connected to the first vehicle unit (V1) by means of a steering device (D) for mutually pivoting said vehicle units (V1, V2). The mutual pivoting comprises roll movement about a roll axis (X). The steering device (D) comprises a roll arrangement (A2) for said roll movement. The method comprises the step of controlling (S1) the roll arrangement (A2) of the steering device (D) so as to control mutual roll movement of said vehicle units (V1, V2). The present invention also relates to a control device for controlling driving operation of an articulated tracked vehicle. The present invention also relates to a computer program and a computer readable medium.

An articulated tractor comprises a front frame, a rear frame articulated to the front frame by a central articulation, and a pivotable hitch carried by one of the front frame and the rear frame. The hitch is pivoted during steering. Front wheels are offset from the rear part of the tractor.

An articulated tractor comprises a front frame, a rear frame articulated to the front frame by a central articulation, and a pivotable hitch carried by one of the front frame and the rear frame. The hitch is pivoted during steering. Front wheels are offset from the rear part of the tractor.

A soil processing machine includes a machine frame with two longitudinal beams substantially extending in the longitudinal direction of the machine and two transverse beams substantially extending transverse to the longitudinal beams. A soil-processing roller is supported in the longitudinal direction between the transverse beams on the longitudinal beams so that it can rotate about an axis of rotation of the roller. A coupling arrangement is provided on the machine frame for attaching the machine frame to a further machine frame of the soil-processing machine or to a further machine. A lifting/supporting arrangement is provided on the machine frame for lifting and/or supporting the machine frame in relation to the ground. One of the transverse beams is supported on the two longitudinal beams so that it can rotate about a swivel axis substantially parallel to an axis of rotation of the roller.

A soil processing machine includes a machine frame with two longitudinal beams substantially extending in the longitudinal direction of the machine and two transverse beams substantially extending transverse to the longitudinal beams. A soil-processing roller is supported in the longitudinal direction between the transverse beams on the longitudinal beams so that it can rotate about an axis of rotation of the roller. A coupling arrangement is provided on the machine frame for attaching the machine frame to a further machine frame of the soil-processing machine or to a further machine. A lifting/supporting arrangement is provided on the machine frame for lifting and/or supporting the machine frame in relation to the ground. One of the transverse beams is supported on the two longitudinal beams so that it can rotate about a swivel axis substantially parallel to an axis of rotation of the roller.