A method and system for measuring a working height, such as an absolute working height, of a plurality of agricultural attachments using a sensor assembly is disclosed. The sensor assembly includes a sensor and at least one sensor holder. The sensor holder is mounted at mounting positions onto different attachments, with the sensor being reversibly mounted in the sensor holder at the mounting position. The sensor, in a mounted state, records measured data relating to a working height of the agricultural attachment and transmits the measured data to the control assembly. In turn, the control assembly determines the working height of the particular attachment from a calibration data set specific to the mounting position.

A method and system for regulating a rear power lift of an agricultural production machine in an agricultural combination is disclosed. The agricultural combination includes an agricultural production machine and an agricultural attachment. The agricultural attachment is connected to the agricultural production machine via a rear power lift of the agricultural production machine. The agricultural production machine includes a driver assistance system that regulates machine parameters of the rear power lift using position regulation and/or traction regulation on which a slip control is superimposed. The driver assistance system determines a target slip for slip regulation optimized for position regulation and/or traction regulation depending on at least one existing soil property and at least one existing tire property, and regulates the rear power lift to the optimized target slip.

An agricultural implement includes at least one row unit having a plurality of support members, each of which is pivotably coupled to an attachment frame or another of the support members to permit vertical pivoting vertical movement of the support members, and a plurality of soil-engaging tools, each of which is coupled to at least one of the support members. A plurality of hydraulic cylinders are coupled to the support members for urging the support members downwardly toward the soil. A plurality of controllable pressure control valves are coupled to the hydraulic cylinders for controlling the pressure of hydraulic fluid supplied to the cylinders. A plurality of sensors produce electrical signals corresponding to predetermined conditions, and a controller is coupled to the sensor and the controllable pressure control valves. The controller receives the electrical signals from the sensors and produces control signals for controlling the pressure control valves.

A row unit (10) of an agricultural planter with an apparatus for adjusting the depth of a trench opened by the row unit (10). The row unit (10) includes a trench depth adjustment assembly (90T) configured to modify the trench depth. The trench depth adjustment assembly (90T) includes a depth adjustment body (5044) pivotally connected via a pivot to a frame member (14) of the row unit (10). An electric motor (5030) is operable to cause rotation of a shaft (5038) operably coupled with the depth adjustment body (5044), whereby rotation of the shaft (5038) causes the depth adjustment body (5044) to pivotally move about the pivot (92) thereby changing a position of contact of the depth adjustment body (5044) with a gauge wheel arm (54), thus changing the amount of upward ravel of the gauge wheel (52) with respect to a trench opening disc (62) and thus the depth of the trench.

A scraper assembly for a split gauge wheel of a planter row unit. The scraper assembly includes a scraper blade having a finger projection configured to extend downwardly into a gap between the inner and outer wheel members of the split gauge wheel. An inner scraper flange extends laterally inward from the finger projection and is disposed in proximity to a circumferential periphery of the inner wheel member. An outer scraper flange extends laterally outward from the finger projection and is disposed in proximity to a circumferential periphery of the outer wheel member. As the gauge wheel rotates, the inner and outer scraper flanges remove soil buildup on the circumferential periphery of the respective inner and outer wheel members and the finger projection removes soil buildup in the gap between the inner and outer wheel members.

An agricultural trench depth sensing system having a trench implement adapted to be disposed in a soil trench opened in a soil surface. In one embodiment an ultrasonic sensor detects a distance to an upper surface of said trench implement or a target disposed thereon. In another embodiment, said trench implement includes one or more fingers which rotate with respect to said trench implement to detect the soil surface relative to said trench implement. In another embodiment, said trench implement includes side sensors for detecting the sidewall of the soil trench.

System for adjusting the depth of a trench opened by a row unit (10) of an agricultural planter. The row unit (10) includes a trench depth adjustment assembly (90R) configured to modify the trench depth. The trench depth adjustment assembly (90R) includes a depth adjustment body (3044) pivotally connected via a pivot (92) to a frame member (14) of the row unit (10). An electric motor (3030) is operable to cause rotation of a shaft (3034) operably coupled with the depth adjustment body (3044), whereby rotation of the shaft (3034) causes the depth adjustment body (3044) to pivotally move about the pivot (92) thereby changing a position of contact of the depth adjustment body (3044) with a gauge wheel arm (54), thus changing the amount of upward travel of the gauge wheel (50) with respect to a trench opening disc (62) and thus the depth of the trench.

An agricultural implement includes at least one row unit having a plurality of support members, each of which is pivotably coupled to an attachment frame or another of the support members to permit vertical pivoting vertical movement of the support members, and a plurality of soil-engaging tools, each of which is coupled to at least one of the support members. A plurality of hydraulic cylinders are coupled to the support members for urging the support members downwardly toward the soil. A plurality of controllable pressure control valves are coupled to the hydraulic cylinders for controlling the pressure of hydraulic fluid supplied to the cylinders. A plurality of sensors produce electrical signals corresponding to predetermined conditions, and a controller is coupled to the sensor and the controllable pressure control valves. The controller receives the electrical signals from the sensors and produces control signals for controlling the pressure control valves.

A penetration depth control and gauge wheel contact force monitoring system for a row unit includes a penetration depth actuator configured to drive a gauge wheel arm assembly to move a gauge wheel relative to a row unit frame to control a penetration depth of an opener of the row unit. The penetration depth actuator includes a contact force sensor configured to output a sensor signal indicative of a contact force between the gauge wheel and a soil surface, the penetration depth actuator includes a body configured to be coupled to one of the frame or the gauge wheel arm assembly, the penetration depth actuator includes an actuating device configured to be coupled to the other of the frame or the gauge wheel arm assembly, and the actuating device is configured to move relative to the body to drive the gauge wheel arm assembly to move the gauge wheel.

A gauge wheel load sensor for an agricultural planter having a row unit that includes a pivotably mounted gauge wheel and a down pressure controller for controlling the down pressure on at least a portion of the row unit. The load sensor includes a mechanical element mounted for movement in response to the downward force applied to the row unit; a fluid-containing device containing a movable element coupled to the mechanical element for changing the fluid pressure in response to the movement of the mechanical element; and a transducer coupled to the fluid-containing device for producing an output signal in response to changes in the fluid pressure. An energy storage device, such as an accumulator, may be coupled to the fluid-containing device for receiving a limited amount of fluid in response to changes in the fluid pressure to damp pressure spikes in the output signal of the transducer.