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 current pitch angle of the agricultural implement. The control system is configured to receive the signal indicative of the current pitch angle from the sensor, determine an anticipated pitch angle for traversing an upcoming topographical feature, define an anticipated pitch angle range based on the anticipated pitch angle, determine whether the current pitch angle is within the anticipated pitch angle range, generate a hitch height control signal indicative of instructions to predictively adjust a hitch height actuator if the current pitch angle is not within the anticipated pitch angle range, and communicate the hitch height control signal.

A system and method for controlling an agricultural implement connected to a vehicle is described. 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.

The present disclosure envisages a unitary housing for housing hydraulic components, wherein the hydraulic components are configured for operating a hitch mechanism of a tractor. The unitary housing comprises cavities for locating valve mechanisms therein and a cylinder for accommodating a reciprocating piston. The unitary housing together with a plurality of valve mechanisms disposed in corresponding cavities, forms a predetermined hydraulic circuit. The hydraulic circuit has minimum number of leakage joints, minimizes number of components and therefore assembly and machining operations.

A laterally movable carrier is associated with a row frame. The carrier is connected to a frame member, an opener, a first outlet and a second outlet to allow for dynamically variable adjustment of the lateral separation between a first row of planted seed and a second row of planted seed, where the first row of seed is adjacent to the second row of seed.

An arrangement for controlling a hydraulic three-point hitch includes a double-acting hydraulic cylinder and first and second seat valves. The double-acting hydraulic cylinder has a first working chamber, by which pressurized hydraulic fluid can change the lifting position of a lower arm of the hydraulic three-point hitch, and a second working chamber connected to a control valve arrangement, by which a specified target pressure can be set in the second working chamber. The first and second seat valves are in fluid communication with the working chamber. The first seat valve selectively produces a flow connection to a high-pressure source. The second seat valve selectively produces a return connection to a hydraulic reservoir.

An arrangement for controlling a hydraulic three-point hitch includes a hydraulic cylinder, first and second seat valves, and first and second pressure compensation valves. The hydraulic cylinder includes a working chamber, by which pressurized hydraulic fluid changes a lifting position of a lower arm of the hydraulic three-point hitch. The first and second seat valves are in fluid communication with the working chamber. The first seat valve selectively produces a flow connection to a high-pressure source. The second seat valve selectively produces a return connection to a hydraulic reservoir. The first pressure compensation valve is connected upstream of the first seat valve in a first through-flow direction. The second pressure compensation valve is connected upstream of the second seat valve in a second through-flow direction.

A method and a device for hitching a tool to an agricultural vehicle by a system for coupling the agricultural vehicle to a first frame, the coupling system including two hooks which extend substantially in the progression direction of the hitch, each of the hooks being provided with a first end that is proximal and a second end that is distal relative to the first free frame and being intended to be connected to the tool, the second free ends defining, once connected to the tool, a direction, the coupling system further having elements which are positioned between the first proximal ends of the hooks and the first frame in order to pivot, about the vertical axis, the direction, defined by the second free distal ends.

A row frame is coupled to the rear member. A first opener is configured to open the soil; the first opener is supported by or from a first support extending downward from the frame member. A first outlet is configured to dispense or apply a nutrient strip. A laterally movable carrier is associated with the row frame. The carrier supports the first opener and the first outlet. A second outlet can dispense or plant seed, wherein the first outlet and the second outlet have a lateral separation that is dynamically adjustable during the simultaneous application of seed and the nutrient strip.

A data processor determines whether a draft force on the implement is unbalanced based on an error between the observed implement angle and a target implement heading exceeding a threshold deviation. The data processor is adapted to generate a control signal to compensate for the imbalance in the draft force by adjusting the first lateral position via the first actuator, or by adjusting the second lateral position via the second actuator, the first actuator and the second actuator being positioned on opposite lateral sides of the implement.