A hitch device for an implement, suitable for being mounted on an agricultural vehicle, including a chassis transverse to the direction of travel of the hitch, a system for coupling an agricultural implement to the chassis, the coupling system being designed to pivot freely relative to the chassis, about a vertical axis, an attachment device for attaching the chassis to the agricultural vehicle, the attachment device including at least two arms intended to link the chassis to the agricultural vehicle, and each carrying two pivot links that together define a deformable parallelogram.

A sway block assembly includes a sway block having a wear surface and a flange. The flange includes a first slot configured to receive a first fastener to secure the sway block to a member of a three-point hitch system. The wear surface is configured to contact a wear block of the three-point hitch system. The wear surface is not formed on the flange.

A method is provided for controlling the operation of an attachment that is coupled to a tractor via a top link and two bottom links of a powerlift. The method includes selecting a point of action from at least one of a pull point as a geometric intersection of imaginary extensions of both bottom links and a pole point as a geometric intersection of imaginary extensions of the top link and a bottom link. The method also includes determining a position of the selected point of action, and signaling the determined position of the point of action by a display unit or adjusting the determined position depending on a comparison with a setpoint setting.

A system includes an agricultural implement, a sensor, and a control system. The agricultural implement is configured to be coupled to an agricultural vehicle. The sensor is coupled to the agricultural implement and configured to output a signal indicative of a pitch angle of the agricultural implement. The control system is configured to receive the signal indicative of the pitch angle from the sensor, determine whether the pitch angle is within a pitch angle range, generate a hitch height control signal indicative of instructions to adjust a hitch actuator if the pitch angle is not within the pitch angle range, and communicate the hitch height control signal.

A housing (100) for housing hydraulic components, wherein the hydraulic components are configured for operating a hitch mechanism of a tractor, is a single-body component that is configured to house a plurality of valve mechanism and a reciprocating piston therein. The housing (100) comprises cavities for locating valve mechanisms therein and a cylinder (110) for accommodating a reciprocating piston (210). The housing (100) together with a plurality of valve mechanisms (122, 124, 126, 128, 130, 132) disposed in corresponding cavities, forms a predetermined hydraulic circuit (1000). The hydraulic circuit (1000) has minimum number of leakage joints, minimizes number of components and therefore assembly and machining operations.

A bearing arrangement is provided for a side stabilizer of a rear power lift for an agricultural utility vehicle. The arrangement includes a movable bearing and a bearing bracket for the bearing. The bearing bracket is disposable in an installed operating position to achieve a mechanical coupling of the bearing bracket with the rear power lift. An axle housing includes a central longitudinal axis for a rear axle of the utility vehicle. The bearing bracket has a bearing point for the movable bearing of the side stabilizer and is connected to the axle housing by a clamping force. The clamping force is oriented parallel to a traction force acting on the bearing point in the installed operating position.

In a hydraulic adjustment device, preferably for transverse adjustment of the lower links of a three-point power lift on an agricultural machine, with two selectively controllable hydraulic cylinders and a hydraulic control circuit for actuating them, a control circuit with a pressure control device for generating an adjustable control pressure in dependence on an electrical control signal is provided, and a pressure-controlled changeover valve is connected to the pressure control device and, when a first control pressure value is applied, assumes a first switching position in which a first cylinder is connected to a pressure sink and the second cylinder is connected to a pressure source, and, when a second control pressure value is applied which is higher than the first control pressure value, assumes a second switching position in which the first cylinder is connected to the pressure source and the second cylinder is connected to the pressure sink.

A bearing arrangement is provided for a side stabilizer of a rear power lift for an agricultural utility vehicle. The arrangement includes a movable bearing and a bearing bracket for the bearing. The bearing bracket is disposable in an installed operating position to achieve a mechanical coupling of the bearing bracket with the rear power lift. An axle housing includes a central longitudinal axis for a rear axle of the utility vehicle. The bearing bracket has a bearing point for the movable bearing of the side stabilizer and is connected to the axle housing by a clamping force. The clamping force is oriented parallel to a traction force acting on the bearing point in the installed operating position.

A system and method for controlling an agricultural implement connected to a vehicle. An actuator is arranged to control a lateral position of the implement with respect to the vehicle, also influencing the vertical angle of the implement. A camera mounted on the implement is connected to an image processing system which is adapted to derive the position of at least one row of plants in an image provided by the camera. An implement control unit controls the actuator to move the implement to a desired position based upon the derived position of the at least one row of plants, and a compensation arrangement compensates for the rotation of the camera around the vertical axis caused by the actuator based on the position of the actuator.

A method includes receiving a first signal indicative of an implement pitch angle from a sensor, determining whether the pitch angle is within a pitch angle range, generating a first control signal indicative of instructions to adjust a hitch actuator if the pitch angle is not within the pitch angle range, and communicating the first control signal to the hitch actuator.