A work vehicle incudes a traveling mechanism driven by a rotational power from an engine and an implement for effecting a ground work by the rotational power of the engine. The work vehicle further includes a load ratio calculation section 53 for calculating an engine load ratio indicative of an engine load of the engine, a ground speed calculation section 51 for calculating a ground speed of the vehicle body with using satellite positioning data, a slip ratio calculation section 52 for calculating a slip ratio indicative of slippage of the traveling mechanism relative to a ground surface by using the ground speed, a traveling work control section 4 for creating an appropriate traveling work state by controlling a rotational speed of the engine and a posture of the implement, and a traveling work management section 50 for outputting a state changing command that commands a change of the traveling work state, based on the engine load ratio and the slip ratio.

A work vehicle incudes a traveling mechanism driven by a rotational power from an engine and an implement for effecting a ground work by the rotational power of the engine. The work vehicle further includes a load ratio calculation section 53 for calculating an engine load ratio indicative of an engine load of the engine, a ground speed calculation section 51 for calculating a ground speed of the vehicle body with using satellite positioning data, a slip ratio calculation section 52 for calculating a slip ratio indicative of slippage of the traveling mechanism relative to a ground surface by using the ground speed, a traveling work control section 4 for creating an appropriate traveling work state by controlling a rotational speed of the engine and a posture of the implement, and a traveling work management section 50 for outputting a state changing command that commands a change of the traveling work state, based on the engine load ratio and the slip ratio.

A device for a vehicle, in particular a tractor, with a hydraulic actuating unit for regulating the operation of a towing unit on the vehicle comprises at least one speed detecting unit with two distance determining sensors positioned one after the other in the direction of travel of the vehicle and directed toward the ground and an analysis unit as well as data communications connections to a vehicle operating system and a hydraulic operating system associated with the hydraulic actuating unit.

A device for a vehicle, in particular a tractor, with a hydraulic actuating unit for regulating the operation of a towing unit on the vehicle comprises at least one speed detecting unit with two distance determining sensors positioned one after the other in the direction of travel of the vehicle and directed toward the ground and an analysis unit as well as data communications connections to a vehicle operating system and a hydraulic operating system associated with the hydraulic actuating unit.

A sensor system for determining soil characteristics is disclosed herein. The sensor system includes a ground engaging device for coupling to an agricultural implement. The ground engaging device includes at least one disc member having an aperture and an elongate shaft extending through the aperture. A first sensor unit is arranged on a sensing surface of the disc member and is configured to measure forces acting on the disc member. A second sensor unit is arranged on the elongate shaft and is configured to measure forces acting on the shaft. A processor is communicatively coupled to each of the first and second sensor units. The processor is configured to generate an output signal indicative of a soil characteristic based on the forces measured.

The present invention belongs to the field of machines and agricultural implements, more concretely agricultural implements for the mixture and/or distribution of a solid product having variable granulometry, such as, for example, silage, crumbs, clusters, in powder, among others, such as feedstuff and mineral supplements. Moreover, the present invention brings as main advantage, relative to the implements known to the state of the art, the fact that it has a torque limiting means over the movable parts, such as helical pitch threads, augers and/or beater arms, so that there is no overload in the hydraulic system of the implement that is operatively associated to the tractor unit. Further, the invention in question counts on a protection means, with paralyzation and partial reversal and/or rotation reducer, in an independent and/or synchronized form, of the movable parts, in case the hydraulic circuit of the implement detects a pressure that is over the preestablished value, avoiding damages and unscheduled stops of the implement.

A control system for a tillage implement includes an emitter configured to direct a beam across a set of disc blades of the tillage implement. An axis of the beam is configured to intersect the set of disc blades at a first position radially offset from a rotational axis of the set of disc blades. The control system also includes a sensor configured to receive the beam associated with the emitter. The control system also includes a controller including a memory configured to store instructions and one or more processors. The controller is configured to receive a signal from the sensor indicative of detection of the beam. The controller is also configured to determine a wear status of the set of disc blades based on the signal.

A control system for a tillage implement includes an emitter configured to direct a beam across a set of disc blades of the tillage implement. An axis of the beam is configured to intersect the set of disc blades at a first position radially offset from a rotational axis of the set of disc blades. The control system also includes a sensor configured to receive the beam associated with the emitter. The control system also includes a controller including a memory configured to store instructions and one or more processors. The controller is configured to receive a signal from the sensor indicative of detection of the beam. The controller is also configured to determine a wear status of the set of disc blades based on the signal.

A harrow implement comprises a tool bar and harrow sections extending rearward therefrom. Each of a plurality of hydraulic cylinders is connected between the tool bar and a corresponding harrow section. A hydraulic control is operative to supply pressurized hydraulic fluid such that the hydraulic cylinders exert a substantially constant selected bias force on the harrow sections. The hydraulic control is operative to direct pressurized hydraulic fluid into a first port on each hydraulic cylinder to exert a downward bias force on the plurality of harrow sections, and operative to direct pressurized hydraulic fluid into a second port on each hydraulic cylinder to exert an upward bias force on the plurality of harrow sections. The hydraulic cylinder can be configured to raise the harrow sections to an idle position above the ground, and to a transport position extending up from the tool bar.

A harrow implement comprises a tool bar and harrow sections extending rearward therefrom. Each of a plurality of hydraulic cylinders is connected between the tool bar and a corresponding harrow section. A hydraulic control is operative to supply pressurized hydraulic fluid such that the hydraulic cylinders exert a substantially constant selected bias force on the harrow sections. The hydraulic control is operative to direct pressurized hydraulic fluid into a first port on each hydraulic cylinder to exert a downward bias force on the plurality of harrow sections, and operative to direct pressurized hydraulic fluid into a second port on each hydraulic cylinder to exert an upward bias force on the plurality of harrow sections. The hydraulic cylinder can be configured to raise the harrow sections to an idle position above the ground, and to a transport position extending up from the tool bar.