A corresponding vehicle includes two steerable axles VA1 and HA1 each with an angle sensor, wherein a rear axle HA1 in an all-wheel mode is synchronously steered with the front axle VA1 in the opposite direction, this being designated as a 4×4 steering system. The vehicle further includes a control device for setting the steering angle of the axles based on the data provided by angle sensors.

A road milling machine includes a machine frame, front wheels or tracks, rear wheels or tracks, and a milling drum supported from the machine frame between the rear wheels or tracks. The front wheels or tracks are mounted on pivoting columns. Steering levers are attached to the pivoting columns. A steering tie rod includes a connecting part and a projecting arm. The connecting part is connected to the steering levers. A steering cylinder is connected to a free end of the projecting arm.

A road milling machine includes a machine frame, front wheels or tracks, rear wheels or tracks, and a milling drum supported from the machine frame between the rear wheels or tracks. The front wheels or tracks are mounted on pivoting columns. Steering levers are attached to the pivoting columns. A steering tie rod includes a connecting part and a projecting arm. The connecting part is connected to the steering levers. A steering cylinder is connected to a free end of the projecting arm.

A system and method for differential traction drive and steering axis coordination for an autonomous mower or other turf device includes initiating a steering motion based on determining a target forward speed and a steering rotational speed, calculating a left wheel speed and a right wheel speed, and applying the left and right wheel speeds, wherein the steering rotational speed is driven by a steering motor and the traction wheels associated with the autonomous mower, and the left and right wheel speeds are based on the target forward speed, a distance from a steering axle to the center of the respective wheel, and the steering rotational speed.

Aspects of the invention are directed to running gear for transport devices comprising a guide ring, a wheel carrier configured and arranged to be pivoted within the guide ring about a vertical main axis of rotation and two wheels configured and arranged to be rotated about a common axis of rotation, and an inner ring pivotably mounted in the guide ring via a rotary bearing about the main axis of rotation, and the wheel carrier is pivotably mounted via at least one pivot bearing about a pivot axis perpendicular to the main axis of rotation.

Aspects of the invention are directed to running gear for transport devices comprising a guide ring, a wheel carrier configured and arranged to be pivoted within the guide ring about a vertical main axis of rotation and two wheels configured and arranged to be rotated about a common axis of rotation, and an inner ring pivotably mounted in the guide ring via a rotary bearing about the main axis of rotation, and the wheel carrier is pivotably mounted via at least one pivot bearing about a pivot axis perpendicular to the main axis of rotation.

A mobile transport system includes a drive unit having a first drive wheel rotatable about a first drive axis and a second drive wheel rotatable about a second drive axis, the drive axes extending in a transverse direction. The drive unit includes a swivel and a drive frame. The drive frame is pivotable about a steering axis relative to the swivel. The drive unit includes a marking carrier that is disposed in a stationary manner relative to the drive frame, and on which optically detectable markings are applied. The drive unit includes a camera for detecting the markings and is disposed in a stationary manner relative to the swivel.

A mobile transport system includes a drive unit having a first drive wheel rotatable about a first drive axis and a second drive wheel rotatable about a second drive axis, the drive axes extending in a transverse direction. The drive unit includes a swivel and a drive frame. The drive frame is pivotable about a steering axis relative to the swivel. The drive unit includes a marking carrier that is disposed in a stationary manner relative to the drive frame, and on which optically detectable markings are applied. The drive unit includes a camera for detecting the markings and is disposed in a stationary manner relative to the swivel.

An axle assembly includes an axle, an axle mount configured to be attached to the axle, a positional locater that projects from an outer surface of the axle and is configured to locate an initial position of the axle relative to the axle mount, and an axle adjustment device comprising an inclined surface that contacts the positional locater. A compressive force is exerted between the axle mount and the axle adjustment device when the axle adjustment device is placed in contact with the positional locater to maintain the initial position of the axle.

An axle assembly includes an axle, an axle mount configured to be attached to the axle, a positional locater that projects from an outer surface of the axle and is configured to locate an initial position of the axle relative to the axle mount, and an axle adjustment device comprising an inclined surface that contacts the positional locater. A compressive force is exerted between the axle mount and the axle adjustment device when the axle adjustment device is placed in contact with the positional locater to maintain the initial position of the axle.