Resilient Closing Wheel System for Variable Soil Conditions
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Solution Overview
Problem
Existing trench closing systems in planters and drills are not agronomically optimal due to dependence on environmental and operational factors such as soil moisture, particle composition, and planting speed, leading to suboptimal effectiveness.
Innovation Solution
An improved closing system for planters and drills, featuring a disc assembly and closing wheel assembly with adjustable components, including support arms, discs, and closing wheels, that can resiliently engage and close trenches effectively across varying soil conditions, with a finishing assembly to smooth the soil, and optional liquid application features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional closing systems are used, then the system structure is simple, but the trench closing effectiveness is suboptimal under varying soil conditions
Solution Approach 1:
The closing system employs resilient closing wheels that can dynamically adapt to varying soil conditions. The closing wheels are mounted on resilient arms that allow independent movement and adjustment, enabling the system to maintain effective trench closure across different soil moisture, particle composition, and density conditions without requiring complex active control mechanisms.
Solution Approach 2:
The system allows adjustment of closing wheel downforce and positioning parameters to optimize performance for different soil types and planting conditions. By modifying physical parameters such as wheel position, downforce, and resilient arm characteristics, the system achieves improved reliability without requiring complete structural redesign.
2Adaptability or versatility
If fixed closing system components are used, then the device complexity is low, but the adaptability to different soil conditions is poor
Solution Approach 1:
The closing wheels are mounted on resilient arms that enable independent movement and positioning, allowing each wheel to adapt to local soil variations. This dynamic configuration provides versatility across different soil conditions while maintaining a relatively simple structure through passive adaptation rather than active control.
Solution Approach 2:
The resilient arm mechanism serves multiple functions: it provides structural support for the closing wheels, enables adaptation to varying soil conditions, allows for downforce adjustment, and accommodates different planting depths. This multi-functionality achieves broad adaptability without proportionally increasing device complexity.
3Reliability
If non-resilient closing wheels are used, then the manufacturing is simpler, but the effectiveness under varying operational factors is reduced
Solution Approach 1:
The resilient arms providing flexible mounting for the closing wheels can be manufactured using conventional fabrication methods while still delivering dynamic adaptation. The resilience is achieved through material selection and geometric design rather than complex mechanisms, maintaining ease of manufacture while improving reliability under varying operational conditions.
4Manufacturing precision
If single-point closing is used, then the device complexity is low, but the soil closure quality is insufficient
Solution Approach 1:
The closing system divides the closing function into multiple closing wheels that can independently engage different portions of the trench. This segmentation allows each wheel to optimize its engagement with the soil, improving overall closure quality through distributed action rather than concentrated force from a single closing point.
Data Source
AI summary
Systems, methods, and apparatus for closing a planting trench include a disc assembly for loosening soil adjacent to the planting trench. In some embodiments a closing wheel assembly has a subframe, a vertical pivot mounting the closing wheel subframe to a row unit subframe, and a air of pivot arms. The closing wheel subframe pivots relative to the subframe of the row unit.