According to the invention, PTO connecting apparatus is provided. According to the invention, this comprises a vehicle PTO connecting device from which an accessory equipment PTO connecting device according to the invention is releasable and nonpositively connectable and couplable.

In one embodiment, a drive axle, comprising: a first axle frame comprising a first pair of gears at opposing sides of one end of the first axle frame, each of the gears comprising a hole; a second axle frame comprising a second pair of gears at opposing sides of one end of the second axle frame adjacent the one end of the first axle frame, each of the gears comprising a hole, the first pair of gears intermeshing with the second pair of gears throughout an articulation range; a center frame disposed between the first and second axle frames, the first and second axle frames coupled to the center frame by plural pins disposed in the holes of the first and second pairs of gears; a driving shaft surrounded at least in part by the first axle frame and comprising a first yoke; a driven shaft surrounded at least in part by the second axle frame and comprising a second yoke; and a double cardan joint, the double cardan joint coupled to the first and second yokes, wherein the center frame surrounds at least a portion of the double cardan joint.

An agricultural implement includes a tow bar assembly for towing the implement with a towing vehicle. The tow bar assembly includes a tow bar mounted to a part of the implement by a first pivot bearing so as to be pivotable about a first vertical axis. The tow bar assembly includes an arm parallel with and spaced vertically below the tow bar. The arm is attached to the part of the implement by a second pivot bearing so as to be pivotable about a second vertical axis that is coaxially located with the first vertical axis.

An agricultural implement includes: a center frame defining a travel axis; a tool bar connected to the center frame and extending transversely to the travel axis; a first row unit having a first parallel linkage defining a first linkage angle relative to the tool bar; a first angle sensor associated with the tool bar and the first parallel linkage and configured to output a first linkage angle signal corresponding to the first linkage angle; an actuator linked to the first row unit and configured to adjust the first linkage angle; and a controller operationally coupled to the first angle sensor and the actuator. The controller is configured to: determine the first linkage angle; compare the first linkage angle to a preset linkage angle; and activate the actuator to adjust the first linkage angle to the preset linkage angle if the first linkage angle deviates from the preset linkage angle.

An attachment structure of a generator and a working machine including a transmission case; and a PTO shaft protruding from the transmission case, includes a structure body attached to a side of the transmission case from which the PTO shaft protrudes, and includes the generator attached to the structure body.

A towed agricultural machine includes a converter, configured to convert a first voltage potential generated by a generator to a second voltage potential. The second voltage potential powers a component of the towed agricultural machine. Further, the towed agricultural machine also includes a switch that senses the absence of the second voltage potential from the converter and switches to powering the subcomponent with a second voltage potential received from a source external to the towed agricultural machine. The second voltage potential output by the converter can also be combined, on a power bus, with the second voltage potential from the external source or another source.

A towed agricultural machine includes a converter, configured to convert a first voltage potential generated by a generator to a second voltage potential. The second voltage potential powers a component of the towed agricultural machine. Further, the towed agricultural machine also includes a switch that senses the absence of the second voltage potential from the converter and switches to powering the subcomponent with a second voltage potential received from a source external to the towed agricultural machine. The second voltage potential output by the converter can also be combined, on a power bus, with the second voltage potential from the external source or another source.

The present disclosure refers to an agricultural system having a tractor and an implement and a method of operating. A driveline is provided between a driving device (11.3) of a tractor (1) and a first functional element (12.3) of an implement (2), the driveline comprising a tractor driveline (14) and an implement driveline (17) connected through a power take-off connection (13). A driving force is provided to the first functional element (12.3) of the implement (2) through the driveline in a first mode of operation, thereby, a working tool (18) rotating in a first direction in response to the driving force. An operation problem is detected for the first functional element (12.3) by a sensor (19) provided in a tractor-implement control system. Reverse control signals are generated in a tractor controller (4) provided in the tractor-implement control system in response to the detecting of the operation problem for the first functional element (12.3). A direction of rotation of the drive output shaft (15) of the tractor power take-off (13) is reversed in response to the providing of the reverse control signals in the tractor controller (4) in a second mode of operation, thereby, rotating the working tool (18) of the first functional element (12.3) in a second direction which is opposite to the first direction.

The present disclosure refers to an agricultural system having a tractor and an implement and a method of operating. A driveline is provided between a driving device (11.3) of a tractor (1) and a first functional element (12.3) of an implement (2), the driveline comprising a tractor driveline (14) and an implement driveline (17) connected through a power take-off connection (13). A driving force is provided to the first functional element (12.3) of the implement (2) through the driveline in a first mode of operation, thereby, a working tool (18) rotating in a first direction in response to the driving force. An operation problem is detected for the first functional element (12.3) by a sensor (19) provided in a tractor-implement control system. Reverse control signals are generated in a tractor controller (4) provided in the tractor-implement control system in response to the detecting of the operation problem for the first functional element (12.3). A direction of rotation of the drive output shaft (15) of the tractor power take-off (13) is reversed in response to the providing of the reverse control signals in the tractor controller (4) in a second mode of operation, thereby, rotating the working tool (18) of the first functional element (12.3) in a second direction which is opposite to the first direction.

A method for operating a power take-off shaft of an agricultural tractor with an attachment hoist includes providing a power take-off shaft spatially assigned to the attachment hoist, a hoist controller and a control unit. The method also includes detecting an operating state of the power take-off shaft via a first sensor and an upper operating position of the attachment hoist via a second sensor. The method further includes restricting the upper operating position to a first maximum value by the control unit if the first sensor detects that the power take-off shaft is not operating, and restricting the upper operating position to a second maximum value by the control unit if the first sensor detects that the power take-off shaft is operating, where the second maximum valve is less than the first maximum value.