A working vehicle has an undercarriage assembly configured to drive the working vehicle over ground and a chassis connected to the undercarriage assembly through a suspension system. The suspension system includes a mechanical spring, the mechanical spring having a first end connected to the undercarriage assembly and a second end. The suspension system includes a hydraulic cylinder, the hydraulic cylinder having a first portion that mounts to the second end of the mechanical spring and a second portion that connects to the chassis such that the mechanical spring and hydraulic cylinder are arranged in series between the undercarriage assembly and the chassis to modify the height of the chassis. The suspension system is configured to level the chassis to offset the effects of ballast weights or other external loads such as from a drawbar or 3-point hitch.

A vehicle comprising at least a first wheel (6) mounted in a first side area of the vehicle and a second wheel (6′) mounted in a second side area of the vehicle is disclosed. The vehicle comprises a track device (8) configured to be brought into engagement with the ground (10). The vehicle comprises a control member (32) configured to adjust the pressure with which the track device engages the ground, wherein the pressure is determined on the basis of measurements performed by one or more detection members configured to detect one or more variable parameters of the vehicle or external information received by the vehicle.

A stair assembly for a work vehicle includes a stepped support and an actuator. The stepped support has one or more steps mountable to a side of the work vehicle. The stepped support is moveable by the actuator between a retracted orientation, in which the stepped support has a first length between first and second ends, and an extended orientation, in which the support structure has a greater length. When mounted to the work vehicle, the second end of the stepped support is at an outward lowered position in the extended orientation with respect to the work vehicle relative to an inward raised position of the second end of the stepped support in the retracted orientation.

A stair assembly for a work vehicle includes a stepped support and an actuator. The stepped support has one or more steps mountable to a side of the work vehicle. The stepped support is moveable by the actuator between a retracted orientation, in which the stepped support has a first length between first and second ends, and an extended orientation, in which the support structure has a greater length. When mounted to the work vehicle, the second end of the stepped support is at an outward lowered position in the extended orientation with respect to the work vehicle relative to an inward raised position of the second end of the stepped support in the retracted orientation.

A telescoping axle includes an elongated center tubular base axle section for supporting a farm implement and receiving in telescopic relation an elongated tubular outer axle section which receives in telescopic relation an elongated tubular inner axle section. Each axle section is preferably rectangular or square in cross section with the outer and inner axle sections each supporting a horizontal wheel axle. An elongated actuator connects the inner axle section to the outer axle section for moving the inner axle section and outer axle section between a retracted position within the base axle section and an extended position projecting from opposite ends of the base axle section. The axis of each axle is preferably above the base axle section, additional axle sections may be used and the axles may be made steerable.

A method for automatically controlling vehicle speeds of a track-based work vehicle may include monitoring, with a computing device, a load transmitted through a pivot pin of a track assembly of the work vehicle and determining, with the computing device, a speed limit setting for the work vehicle based on the monitored load, wherein the speed limit setting is associated with maintaining an operating temperature of a track of the track assembly below a predetermined temperature threshold. In addition, the method may include automatically limiting, with the computing device, a vehicle speed of the work vehicle based on the determined speed limit setting.

A method for automatically controlling vehicle speeds of a track-based work vehicle may include monitoring, with a computing device, a load transmitted through a pivot pin of a track assembly of the work vehicle and determining, with the computing device, a speed limit setting for the work vehicle based on the monitored load, wherein the speed limit setting is associated with maintaining an operating temperature of a track of the track assembly below a predetermined temperature threshold. In addition, the method may include automatically limiting, with the computing device, a vehicle speed of the work vehicle based on the determined speed limit setting.

A three point connection dolly for connecting an articulating tractor to a plow includes a dolly having a three point plow hitch configured to connect to a plow. The dolly also includes a chassis frame with a tractor hitch extension configured to extend the three point plow hitch a distance from the articulating tractor sufficient to allow rear wheels of the articulating tractor to fully turn.

A working vehicle may be provided that detects obstacles around a self-traveling tractor in a wide range, with reduced erroneous detection. A tractor may include a vehicle body including a front wheel and a rear wheel; a rear wheel fender covering the front and top of the rear wheel; a rear stay in a shape that extends along the rear wheel fender, a rear first obstacle sensor provided at the front of the rear stay; and a rear second obstacle sensor provided at the rear of the rear stay.

An autonomously robotic machine for performing one or more agricultural operations. The machine includes a frame having a length and an adjustable width. A plurality of ground-engaging mechanisms are coupled to the frame for propelling the machine in a direction of travel. The machine includes a controller, a power-generating device, and a generator. The controller controls the machine, and the generator receives mechanical power from the power-generating device and produces electrical power. A docking assembly is coupled to the frame. The docking assembly includes a power unit and at least one coupler for coupling to any one of a plurality of agricultural implements.