Abstract: A track drive of an agricultural production machine is disclosed. The track drive includes a driving wheel, a front deflection roller, a rear deflection roller, a continuous caterpillar track around the driving wheel and the deflection rollers, and middle rollers between the front and rear deflection roller. The track drive further includes a track frame and a swing frame. Using the swing frame, the track drive pivots about a first axis of the agricultural production machine, and the track frame pivots about a second axis of the swing frame. The second axis is at a distance from the first axis, and a spring system or damper system is positioned between the track frame and the pivot frame. The deflection rollers are positioned on the track frame with the middle rollers positioned on a common support element, which is positioned pivotably about a third axis on the track frame.

Abstract: A rotary feedthrough for a compressed air supply system is provided between a stator and a rotor rotating relative to this stator. A compressed air channel disposed in the stator is connected to a compressed air line and leads into an annular chamber formed in the rotor, from which at least one working channel leading to a consumer proceeds. The stator is connected in the region of the rotary feedthrough to a control line. A moment of friction occurring in the region of the rotary feedthrough resulting in premature wear is reduced by providing a switchable non-return valve in the annular chamber. Blocking elements which extend within the annular chamber concentrically to the rotational axis of the rotor are moveable into an open position by an actuating element, which is displaced from the stator in the direction of the blocking elements.

Abstract: A rotary feedthrough for a compressed air supply system is provided between a stator and a rotor rotating relative to this stator. A compressed air channel disposed in the stator is connected to a compressed air line and leads into an annular chamber formed in the rotor, from which at least one working channel leading to a consumer proceeds. The stator is connected in the region of the rotary feedthrough to a control line. A moment of friction occurring in the region of the rotary feedthrough resulting in premature wear is reduced by providing a switchable non-return valve in the annular chamber. Blocking elements which extend within the annular chamber concentrically to the rotational axis of the rotor are moveable into an open position by an actuating element, which is displaced from the stator in the direction of the blocking elements.

Abstract: A method for adjusting the pressure in at least one first and one second tire of a vehicle from a starting value to a target value, includes that the target value is located between the starting value and a pressure of a pressure reservoir. The method includes allowing air to flow through a first line between the first tire and the reservoir and through a second line between the second tire and the reservoir, determining which tire is likely to reach the target value sooner and throttling the air flow through the line of the tire identified in the determining increasing the air flow through the line of the tire that was not identified in the step of determining.

Abstract: A steering axle is provided for agricultural vehicles having at least two drive motors for at least two land wheels on either side of the steering axle disposed next to one another substantially in the center between the land wheels. A mechanical drive train between the drive motor and the wheel hub is provided on both sides.

Abstract: A method for adjusting the pressure in at least one first and one second tire of a vehicle from a starting value to a target value, includes that the target value is located between the starting value and a pressure of a pressure reservoir. The method includes allowing air to flow through a first line between the first tire and the reservoir and through a second line between the second tire and the reservoir, determining which tire is likely to reach the target value sooner and throttling the air flow through the line of the tire identified in the determining increasing the air flow through the line of the tire that was not identified in the step of determining.

Abstract: A vehicle, has a chassis, at least one front axle assigned to the chassis and carrying land wheels, a rear axle located downstream of the front axle, relative to a direction of forward travel and carrying at least two steerable wheels, wherein the rear axle is hingedly connected to the chassis such that it is movable to and fro transversely to the direction of travel, and includes at least one axle body, wherein regions of the chassis are assigned to the wheels of the rear axle in an at partially adjacent manner, a pendulum device coupling the rear axle of the chassis and enabling a displacement of the rear axle that is oriented transversely to the direction of travel, and a swivel device coupling each wheel of the rear axle to the axle body of the rear axle and enabling a displacement of each wheel that is oriented transversely to the direction of travel.