Abstract: A row unit for an agricultural implement, comprising a frame and a seed furrow-opener, wherein the seed furrow-opener comprises a pair of seed discs rotatably connected to the frame via at least one axle unit, wherein each of the seed discs has a respective geometric axis of rotation, and wherein the axes of rotation are non-parallel, so that a mutual spacing between the peripheries of the seed discs is non-constant. The axle unit is pivotable relative to the frame, so that the orientation of at least one of the axes of rotation is adjustable. An agricultural implement comprises at least one such row unit and a method of adjusting a row unit.

Abstract: An agricultural implement includes ground engaging tools, connected to an attachment frame via a linkage arrangement and a fluid control system. For each ground engaging tool there is a linear actuator to provide a supplemental down force to the ground engaging tool via the linkage arrangement. The linear actuators are adapted so that the same relation between the rod chamber control pressure and the cap chamber control pressure causes first linear actuators to provide a first supplemental down force, and second linear actuators to provide a larger second supplemental down force. This enables a higher supplemental down force to be applied to row units behind the tractor wheels, although the fluid control system supplies the same relation between the rod and cap chamber control pressures to all linear actuators.

Abstract: This document concerns a device for airflow-assisted feeding of granular material in an agricultural implement, comprising an air inlet (1611, 1612), a material inlet (167), and an outlet (162) for material-laden airflow, a roof (163), the horizontal extension of which defines a material pickup zone (160), wherein the material inlet (167), air inlet (1611, 1612) and outlet (162) are connected to the material pickup zone (160), wherein the device furthermore comprises an air inlet valve (164) containing a valve seat (1641) and a valve body (1642). The valve body is rotatable about a geometric axis which is substantially perpendicular to a flow direction at the air inlet. The document also concerns a method for airflow-assisted feeding of material in an agricultural implement, a meter housing, and an agricultural implement comprising such a meter housing. It also concerns a frame for a material pickup module and a method for forming a meter housing.

Abstract: A method and system for calibrating the feed rate of a metering device for airflow-borne feeding of granular material in an agricultural implement. The method of calibrating the feed rate of the metering device comprises a first volumetric feeder with a first metering rotor arranged to feed granular material to an airflow channel.

Abstract: A rotor apparatus for feeding granular or powdered material in an agricultural implement, the rotor apparatus being designed to be received in a partially cylindrical feeder space of a feeder device for volumetric feeding. The rotor apparatus comprises an insert part, which in size and shape is adapted to be inserted into the feeder space and to substantially prevent air from passing the insert part when this is inserted into the feeder space, and a rotor, which is rotatable relative to the insert part. The insert part defines a rotor space, in which the rotor is rotatable, and the rotor is together with the insert part designed to provide an air lock. The insert part comprises a wall portion interacting with the rotor and located radially outside the radially outermost portion of the rotor.

Abstract: This document sets out a method of adjusting an agricultural implement's orientation. The method comprises recording, while the agricultural implement is travelling, a series of orientation values corresponding to the orientation of the agricultural implement in at least one vertical plane, calculating a derived orientation value based on said series of values and, if the derived orientation value is outside a predetermined range, adjusting a mutual position relationship between at least two parts of the agricultural implement that can move relative to each other.

Abstract: This document relates to an agricultural implement with hydraulic functions and a method of controlling an agricultural implement comprising receiving a speed signal which represents the advancing speed of the agricultural implement, receiving a control signal from a first user interface, allowing, if the speed fulfils a predetermined criterion, the activation of a first actuator function and of a second actuator function based on a control signal, and, if the speed does not fulfil the criterion, restricting the possibility of activating the first actuator function based on a control signal.

Abstract: A meter housing comprises a meter space with a material inlet and a material outlet, and a wall portion extending between the material inlet and the material outlet. The wall portion has substantially the form of a cylinder sector. The wall portion has a scraper part, which extends substantially parallel to a central axis of the cylinder sector.

Abstract: The document discloses a disc tool (1) for breaking up field residues, comprising a central hub portion (10), which is designed for mounting the disc in a tool holder in order to make the disc rotatable about a rotation axis (Ar), a cultivating portion (11), which is located radially outside of and adjoins the hub portion (10), and a plurality of substantially straight cutting edges (E1, E2) which are located at the periphery of the disc tool. The cultivating portion (11) has a plurality of undulations (111, 112) which, with an axial extent decreasing toward the inside, run from the cutting edges (E1, E2) to the hub portion (10). The cutting edge (LE1, E2) is designed such that 90-98% of a track formed by the cutting edge consists of straight track portions. The document further discloses an agricultural implement with such disc tools, the use of such an agricultural implement, and a method for manufacturing such a disc tool.

Abstract: A method and system for calibrating the feed rate of a metering device for airflow-borne feeding of granular material in an agricultural implement. The method of calibrating the feed rate of the metering device comprises a first volumetric feeder with a first metering rotor arranged to feed granular material to an airflow channel.

Abstract: An agricultural implement comprising a first frame section, a portion which is moveable relative to the first frame section, and an actuator for controlling a relative movement between the first frame section and the portion. The agricultural implement has a first sensor arranged to provide a first value corresponding to the angle of the first frame section relative to a predetermined reference plane or a predetermined reference direction, and a second sensor arranged to provide a second value corresponding to the angle of the portion relative to the predetermined reference plane or the predetermined reference direction. The reference plane or reference direction is defined in relation to a direction of gravity.

Abstract: A method and a device for feeding granular material in an agricultural implement and an agricultural implement comprising such a device. The method includes establishing an air flow through a take-up zone in a direction toward an outlet of the take-up zone from an inlet of the take-up zone. The take-up zone, has an extend which, viewed in a horizontal plane, is defined by a roof above the take-up zone and side walls extending downward from the roof, so that a space, which is open in the downward direction and toward an outlet, is formed between the roof and the side walls. The method also includes feeding the material to the take-up zone with the aid of gravity, so that the material falls in a direction transversely to the airflow into the take-up zone, thus delimiting the space in the downward direction and adjusting an adjustable part which is adjustable between at least two positions, to regulate a flow rate of the airflow in the space between the material and the roof.

Abstract: The present document discloses a rotor apparatus (20) for feeding granular or powdered material in an agricultural implement, the rotor apparatus being designed to be received in a partially cylindrical feeder space of a feeder device for volumetric feeding. The rotor apparatus (20) comprises an insert part (21), which in size and shape is adapted to be inserted into the feeder space and to substantially prevent air from passing the insert part when this is inserted into the feeder space, and a rotor (22), which is rotatable relative to the insert part. The insert part (21) defines a rotor space (218), in which the rotor (22) is rotatable, and the rotor is together with the insert part designed to provide an air lock. The insert part (21) comprises a wall portion (214, 215) interacting with the rotor and located radially outside the radially outermost portion of the rotor.

Abstract: The present document discloses a meter housing for feeding granular or powdered material. The meter housing comprises a meter space with a material inlet and a material outlet, and a wall portion extending between the material inlet and the material outlet. The wall portion has substantially the form of a cylinder sector. The wall portion has a scraper part, which extends substantially parallel to a central axis of the cylinder sector.

Abstract: This document relates to an agricultural implement with hydraulic functions and a method of controlling an agricultural implement comprising receiving a speed signal which represents the advancing speed of the agricultural implement, receiving a control signal from a first user interface, allowing, if the speed fulfils a predetermined criterion, the activation of a first actuator function and of a second actuator function based on a control signal, and, if the speed does not fulfil the criterion, restricting the possibility of activating the first actuator function based on a control signal.

Abstract: A method and a system in an agricultural machine for the coordination of agricultural machines when refilling substance intended to be disseminated over an agricultural field by generating coordination data indicative of an optimum refill location, comprising a level sensor arranged for generating level data, said level data indicating a volume of a substance in a substance reservoir; a position sensor for generating and storing position data and storing or reading a preplanned route; a communication device arranged for transmitting and receiving data; characterized by: a coordination device generating coordination data, based on said level data, said preplanned route and said position data; and transmitting said generated coordination data via the communication device to a refill vehicle.

Abstract: An agricultural implement including at least one container for granular or powder material and a feed device for airflow-based feeding of the granular or powder material. The feed device includes a fan including an impeller accommodated in a fan housing. At least one wall portion of the fan housing is integrated with a wall portion of the container.

Abstract: The invention relates to a roller cylinder (1) comprising band rings (6) which are attached to a center axis (17, 17a, 17b). The roller cylinder comprises at least two band ring segments (14, 14a, 14b) consisting of an outer, substantially circular portion (15), an inner portion (16) and a radial portion (18) extending substantially radially between the inner and outer portions, said inner portions of the band ring segments being fixed by means of fastening means, such as screws (19, 20, 19a, 20a, 21a, 19b, 20b, 21b), to the center axis and abut the center axis at least at the attachment points of the fastening means between the inner portion of the band ring segments and the center axis. The invention also relates to a band ring segment included in a roller cylinder provided with band rings.