A riding lawn mower includes a frame, a mowing device mounted to the bottom of the frame, a functional unit attached to the front of the frame, and a motor group together with a power supply mounted to the frame. The riding lawn mower also comprises a connecting device connecting the frame and the functional unit. The connecting device comprises a first connector attached on the front of the frame, a second connector attached to the functional unit, and a third connector adapted for fixedly connecting the first connector and the second connector, the first connector and the second connector respectively defining through-holes thereon, the third connector extending through the through-holes of the first and the second connectors to fixedly connect the first and the second connectors.

An agricultural distribution device for spreading granular material to be distributed such as seed, fertilizer or the like is disclosed. The distribution device has a frame with at least one storage container for material to be distributed mounted thereon and a tool bar having a toolbar center section and toolbar wings pivotally mounted on opposite ends thereof and a plurality of row units mounted on the tool bar center section and each of the toolbar wings. The toolbar wings are pivotable between working and transport positions. In the working position the toolbar wings extend generally in longitudinal alignment with the center section. In the transport position the toolbar wings are pivoted about a pivoting angle of more than 90° and up to 180° with at least a portion of each toolbar wing or any row units attached thereto supported above the at least one storage container.

An agricultural distribution device for spreading granular material to be distributed such as seed, fertilizer or the like is disclosed. The distribution device has a frame with at least one storage container for material to be distributed mounted thereon and a tool bar having a toolbar center section and toolbar wings pivotally mounted on opposite ends thereof and a plurality of row units mounted on the tool bar center section and each of the toolbar wings. The toolbar wings are pivotable between working and transport positions. In the working position the toolbar wings extend generally in longitudinal alignment with the center section. In the transport position the toolbar wings are pivoted about a pivoting angle of more than 90° and up to 180° with at least a portion of each toolbar wing or any row units attached thereto supported above the at least one storage container.

A locking assembly for a three-point hitch quick coupler includes a locking plate configured to be movably coupled to a main support of the three-point hitch quick coupler. The locking plate is configured to block removal of a lower hitch pin from a lower hook of the three-point hitch quick coupler while the locking plate is in a closed position, and the locking plate is configured to enable removal of the lower hitch pin from the lower hook while the locking plate is in an open position. The locking assembly also includes an actuator coupled to the locking plate and configured to be coupled to the main support of the three-point hitch quick coupler. The actuator is configured to drive the locking plate to move between the open and closed positions.

Systems, devices, and methods for performing autonomous agricultural operations are described herein. An exemplary device may include a toolbar to which a plurality of implements may be interchangeably coupled, and a pair of parallel chassis beams mounted perpendicularly on the toolbar. At least a portion of each of the chassis beams may be telescopic and configured to be extended outward from, and retracted inward towards, the toolbar. The device may also include a plurality of drive assemblies each mounted on one of the chassis beams, and a plurality of motors corresponding to the drive assemblies and configured to drive the drive assemblies in accordance with one or more drive parameters to move the device throughout a site. The device may further include a computing device configured to automatically determine the drive parameters, and cause the plurality of motors to drive the corresponding drive assemblies in accordance with the drive parameters.

Systems, devices, and methods for performing autonomous agricultural operations are described herein. An exemplary device may include a toolbar to which a plurality of implements may be interchangeably coupled, and a pair of parallel chassis beams mounted perpendicularly on the toolbar. At least a portion of each of the chassis beams may be telescopic and configured to be extended outward from, and retracted inward towards, the toolbar. The device may also include a plurality of drive assemblies each mounted on one of the chassis beams, and a plurality of motors corresponding to the drive assemblies and configured to drive the drive assemblies in accordance with one or more drive parameters to move the device throughout a site. The device may further include a computing device configured to automatically determine the drive parameters, and cause the plurality of motors to drive the corresponding drive assemblies in accordance with the drive parameters.

An upper link for a three-point power lift of an agricultural tractor including a cylindrical connecting sleeve, a first fastening element rotated into a first open end of the cylindrical connecting sleeve and configured to be attached to the agricultural tractor, a second fastening element rotated into a second open end of the cylindrical connecting sleeve and configured to produce a releasable connection to an attachment, and a retaining bar attached to the first fastening element. The retaining bar includes a bar portion having a locking region for receiving a retaining catch and runs spaced apart along the cylindrical connecting sleeve. The retaining bar includes a support element encompassing the cylindrical connecting sleeve such that the connecting sleeve is rotationally displaceable, and the length of the upper link is varied by rotating the cylindrical connecting sleeve.

An implement operating apparatus has a U-shaped drive frame supported on drive wheels, each pivotally mounted about a vertical wheel pivot axis. A steering control selectively pivots each drive wheel. A power source is connected through a drive control to rotate the drive wheels in either direction. First and second implements are configured to perform implement operations and to rest on the ground and when the drive frame is maneuvered to an implement loading position with respect to each implement, the implement is connectable to the drive frame and movable to an operating position supported by the drive frame. When the implement is in the operating position, the steering and drive controls are operative to move and steer the drive frame and implement along a first travel path or a second travel path oriented generally perpendicular to the first travel path.

An implement operating apparatus has a U-shaped drive frame supported on drive wheels, each pivotally mounted about a vertical wheel pivot axis. A steering control selectively pivots each drive wheel. A power source is connected through a drive control to rotate the drive wheels in either direction. First and second implements are configured to perform implement operations and to rest on the ground and when the drive frame is maneuvered to an implement loading position with respect to each implement, the implement is connectable to the drive frame and movable to an operating position supported by the drive frame. When the implement is in the operating position, the steering and drive controls are operative to move and steer the drive frame and implement along a first travel path or a second travel path oriented generally perpendicular to the first travel path.

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.