A method for controlling an orientation of ground engaging elements of a harrow of an agricultural implement may include controlling an operation of an actuator such that the actuator applies an actuator force against a support arm when the harrow is disposed at an operating position. The method may also include receiving an input indicative of an instruction to move the harrow from the operating position to a raised position. Furthermore, after receiving the input, the method may include controlling the operation of the actuator such that the actuator force applied against the support arm is adjusted in a manner that reduces the biasing force being applied on the ground engaging elements. Additionally, the method may include initiating movement of the harrow from the operating position to the raised position to raise the ground engaging elements above the ground after reducing the biasing force.

The present invention relates to an agricultural soil cultivation unit having at least two rows of soil working tools that are fastened to a tool carrying frame that is pivotably supported about a horizontal frame pivot axis at a machine frame supported by a chassis on the ground and liftable by a lifting apparatus into a headland position and/or transport position. It is therefore proposed in accordance with an aspect of the invention to change the working depth setting of the soil working tool rows relative to one another online in working operation to hereby be able to react to changing soil conditions in working operation and to be able to mutually compensate resulting side forces of the soil working tools.

The present invention relates to an agricultural soil cultivation unit having at least two rows of soil working tools that are fastened to a tool carrying frame that is pivotably supported about a horizontal frame pivot axis at a machine frame supported by a chassis on the ground and liftable by a lifting apparatus into a headland position and/or transport position. It is therefore proposed in accordance with an aspect of the invention to change the working depth setting of the soil working tool rows relative to one another online in working operation to hereby be able to react to changing soil conditions in working operation and to be able to mutually compensate resulting side forces of the soil working tools.

A tillage machine includes a main frame, a gang rotatably coupled to the main frame, and an arcuately-shaped adjustment rail coupled to the main frame. At least a portion of the adjustment rail is spaced from the main frame. The adjustment rail includes a plurality of apertures each configured to receive a locking structure, and the adjustment rail defines an open space adjacent the main frame.

A tillage machine includes a main frame, a gang rotatably coupled to the main frame, and an arcuately-shaped adjustment rail coupled to the main frame. At least a portion of the adjustment rail is spaced from the main frame. The adjustment rail includes a plurality of apertures each configured to receive a locking structure, and the adjustment rail defines an open space adjacent the main frame.

A tillage implement has a main frame towed in a forward working direction and toolbar assemblies supported on the main frame. Each assembly has an elongate toolbar member transverse to the forward working direction with tillage units spaced along the toolbar member for working the ground. A pivot supports each toolbar at an intermediate location on the toolbar for angular adjustment about an upright axis relative to the main frame. Followers at opposing ends of each toolbar member are received in respective guides at fixed locations on the main frame such that the followers are slidable within the guides in the forward working direction while restricting rotation of the toolbar member about a longitudinal axis of the toolbar member relative to the main frame. Angular position of each toolbar is controlled by an actuator with an attached mechanical indicator that can be read by an operator.

A tillage implement has a main frame towed in a forward working direction and toolbar assemblies supported on the main frame. Each assembly has an elongate toolbar member transverse to the forward working direction with tillage units spaced along the toolbar member for working the ground. A pivot supports each toolbar at an intermediate location on the toolbar for angular adjustment about an upright axis relative to the main frame. Followers at opposing ends of each toolbar member are received in respective guides at fixed locations on the main frame such that the followers are slidable within the guides in the forward working direction while restricting rotation of the toolbar member about a longitudinal axis of the toolbar member relative to the main frame. Angular position of each toolbar is controlled by an actuator with an attached mechanical indicator that can be read by an operator.

A tillage implement is configured to be towed behind an agricultural vehicle. An implement frame has a first lengthwise frame member, a second lengthwise frame member, and a lateral frame member connected to and extending between the first and second lengthwise frame members. A tool assembly is pivotally connected to the implement frame and includes a ground engaging member. An actuator has a first portion connected to the implement frame and a second portion connected to the tool assembly. Movement of the actuator adjusts the position of the tool assembly relative to the implement frame. The lateral frame member includes an actuator opening and at least a portion of the actuator extends into the actuator opening and the lateral frame member.

An agricultural implement includes a plurality of ground-engaging tools configured to modify a surface configuration of an agricultural field and a hydraulically-controlled subsystem configured to modify an operating angle of the plurality of ground-engaging tools. The agricultural implement also includes a sensor coupled to the hydraulically-controlled subsystem configured to generate sensor signals indicative of a current operating angle of the plurality of ground-engaging tools. The agricultural implement also includes an implement control system configured to receive the sensor signals from the sensor to determine the current operating angle of the plurality of ground-engaging tools, and, upon determining the current operating angle is to be changed to a new operating angle, generate control signals for the hydraulically-controlled subsystem to modify the operating angle of the plurality of ground-engaging tools from the current operating angle to the new operating angle.

A tillage implement is configured to be towed behind an agricultural vehicle. An implement frame has a first lengthwise frame member, a second lengthwise frame member, and a lateral frame member connected to and extending between the first and second lengthwise frame members. A tool assembly is pivotally connected to the implement frame and includes a ground engaging member. An actuator has a first portion connected to the implement frame and a second portion connected to the tool assembly. Movement of the actuator adjusts the position of the tool assembly relative to the implement frame. The lateral frame member includes an actuator opening and at least a portion of the actuator extends into the actuator opening and the lateral frame member.