A tool bar and hydraulic system for a large scale agricultural implement. The tool bar includes opposed pivotable wings that are extended in a field configuration and retracted in a transport configuration. In some embodiments, each pivotable wing includes two lift assist assemblies for aiding in the execution of turns in the field, and for aiding in the transport of the agricultural implement. The tool bar may be configured to compensate for twist of the pivotable wings when in the transport configuration. The hydraulic system is configured to stiffen the tool bar assembly for lift assist during field operation and to flex the tool bar into a folded configuration for transport.

A trailer device for an agricultural vehicle includes a frame part and a guide part longitudinally, displaceably mounted in the frame part. The guide part includes a coupling element provided on an end face. The frame part is pivoted by a lifting apparatus for raising and lowering the coupling element relative to a base frame for attaching to a load-bearing vehicle structure. The device includes at least one spring element arranged between the base frame and the frame part such that the spring element exerts a pretensioning force on the frame part for assisting the raising of the coupling element.

A trailer device for an agricultural vehicle includes a frame part and a guide part longitudinally, displaceably mounted in the frame part. The guide part includes a coupling element provided on an end face. The frame part is pivoted by a lifting apparatus for raising and lowering the coupling element relative to a base frame for attaching to a load-bearing vehicle structure. The device includes at least one spring element arranged between the base frame and the frame part such that the spring element exerts a pretensioning force on the frame part for assisting the raising of the coupling element.

A method for automatically leveling an agricultural implement being towed by a work vehicle includes monitoring a vehicle inclination angle via at least one vehicle-based sensor supported on the work vehicle, monitoring an implement inclination angle via at least one implement-based sensor supported on the implement, and determining that the work vehicle has begun to travel across an inclined surface based on the vehicle inclination angle. The method further includes initially adjusting a position of a hitch of the work vehicle in a first direction to maintain the implement inclination angle within a predetermined angular inclination range as the vehicle travels across the inclined surface and adjusting the position of the hitch in a second direction opposite the first direction to maintain the implement inclination angle within the predetermined angular inclination range.

A method for automatically leveling an agricultural implement being towed by a work vehicle includes monitoring a vehicle inclination angle via at least one vehicle-based sensor supported on the work vehicle, monitoring an implement inclination angle via at least one implement-based sensor supported on the implement, and determining that the work vehicle has begun to travel across an inclined surface based on the vehicle inclination angle. The method further includes initially adjusting a position of a hitch of the work vehicle in a first direction to maintain the implement inclination angle within a predetermined angular inclination range as the vehicle travels across the inclined surface and adjusting the position of the hitch in a second direction opposite the first direction to maintain the implement inclination angle within the predetermined angular inclination range.

One or more sensors identify a characteristic of a towed implement using non-visual electromagnetic radiation, auditory detection or temperature detection. The characteristic of the implement is compared to a reference characteristic to determine whether the implement has a problem. If so, control signals are generated to control a controllable subsystem based upon the identified problem.

Disclosed herein is a vehicle (1) with trailer (2), operatively connected thereto through a cardan (3), comprising sensing means (4) of the angle (, ) between the vehicle (1) and the cardan (3), between the trailer (2) and the cardan (3) or between the vehicle (1) and the trailer (2), comparison means of the angle with a threshold angle and means (7) which disengage the power take-off upon exceeding in one direction the threshold angle and which engage It when the angle exceeds again the threshold angle in the opposite direction. The vehicle according to the present invention is a towed load.

Disclosed herein is a vehicle (1) with trailer (2), operatively connected thereto through a cardan (3), comprising sensing means (4) of the angle (, ) between the vehicle (1) and the cardan (3), between the trailer (2) and the cardan (3) or between the vehicle (1) and the trailer (2), comparison means of the angle with a threshold angle and means (7) which disengage the power take-off upon exceeding in one direction the threshold angle and which engage It when the angle exceeds again the threshold angle in the opposite direction. The vehicle according to the present invention is a towed load.

In one aspect, a system for monitoring fluid conduit connections of an agricultural machine may include a first fluid conduit having a first coupling device, a second fluid conduit having a second coupling device, and a third fluid conduit having a third coupling device. Each of the second and third coupling devices may, in turn, include an identification device. A controller of the system may be configured to receive an input from the identification device of one of the second fluid conduit or the third fluid conduit when the respective second coupling device or third coupling device is coupled to the first coupling device. Furthermore, the controller may be configured to identify the one of the second fluid conduit or the third fluid conduit as a connected fluid conduit based on the received input.

In one aspect, a system for monitoring fluid conduit connections of an agricultural machine may include a first fluid conduit having a first coupling device, a second fluid conduit having a second coupling device, and a third fluid conduit having a third coupling device. Each of the second and third coupling devices may, in turn, include an identification device. A controller of the system may be configured to receive an input from the identification device of one of the second fluid conduit or the third fluid conduit when the respective second coupling device or third coupling device is coupled to the first coupling device. Furthermore, the controller may be configured to identify the one of the second fluid conduit or the third fluid conduit as a connected fluid conduit based on the received input.