Agricultural Planter Trench Depth Adjustment for Seed Placement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional agricultural planters lack systems for accurately controlling and measuring the depth of the trench opened by the planter, which can vary due to soil conditions or insufficient down-pressure, affecting seed environment and yield.
Innovation Solution
The implementation of depth adjustment assemblies with primary and secondary adjustment mechanisms, including actuators and sensors, to precisely control and measure the trench depth, ensuring consistent planting depth despite varying soil conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional planters use only maximum depth adjustment apparatus, then device complexity is reduced, but manufacturing precision of trench depth is insufficient
Solution Approach 1:
The depth control system is segmented into multiple independent components: a primary depth adjustment assembly with first adjustment means for setting maximum depth, and a secondary depth adjustment assembly with second adjustment means for fine-tuning the actual trench depth. This segmentation allows each component to handle specific aspects of depth control, improving overall precision without requiring complete system redesign.
Solution Approach 2:
The system transitions from static maximum depth setting to dynamic actual depth control by introducing a secondary adjustment assembly that can modify trench depth in real-time during operation. The second adjustment means enables continuous depth modification based on soil conditions and down-pressure variations, making the depth control adaptive rather than fixed.
2Measurement precision
If planters operate without depth measurement systems, then device complexity is reduced, but measurement precision of actual planting depth is insufficient
Solution Approach 1:
The system incorporates depth sensors that provide real-time feedback on actual trench depth to the control system. This feedback loop enables the secondary adjustment assembly to automatically modify depth settings based on measured values, ensuring accurate depth control while providing farmers with data on actual planting depth for agronomic analysis.
Solution Approach 2:
The patent replaces traditional mechanical depth measurement methods with electronic sensing technology. Depth sensors use electrical or optical fields to measure trench depth non-contactly or with minimal mechanical interaction, providing more precise and reliable measurements compared to mechanical gauges while reducing mechanical wear and complexity.
3Manufacturing precision
If planters do not maintain consistent trench depth, then adaptability to varying soil conditions is improved, but manufacturing precision of planting depth deteriorates
Solution Approach 1:
The secondary adjustment assembly dynamically modifies trench depth during operation in response to varying soil conditions and down-pressure forces. This dynamic capability allows the system to maintain consistent actual depth despite external variations, combining adaptability with precision through real-time adjustment.
Solution Approach 2:
Depth sensors continuously monitor actual trench depth and provide feedback to the control system, which then activates the secondary adjustment assembly to correct any deviations. This closed-loop feedback mechanism ensures planting depth consistency while adapting to soil variations, as the system responds to actual conditions rather than relying on fixed settings.
Data Source
AI summary
Apparatus 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 (90) configured to modify the trench depth. The trench depth adjustment assembly (90) includes a depth adjustment body (94) 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 (94), whereby rotation of the shaft (3034) causes the depth adjustment body (94) to pivotally move about the pivot (92) thereby changing a position of contact of the depth adjustment body (94) with a gauge wheel arm (54), thus changing the amount of upward travel of the gauge wheel (52) with respect to a trench opening disc (62) and thus the depth of the trench.