Adjustable Wedge Assembly for Disk Drill Closing Wheel Angle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Certain soil conditions, such as wetter soils or those with high clay or silt content, hinder the closing system of disk drills from collapsing the sidewall of seed trenches, negatively impacting seed germination and yield.
Innovation Solution
An adjustable wedge assembly is integrated into the closing wheel assembly, allowing the closing wheel to adjust its angle relative to the closing wheel arm via a pivot joint, enabling effective closure of seed trenches even in challenging soil conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the closing wheel uses a fixed angle configuration, then the structure is simple and easy to manufacture, but it cannot adapt to different soil conditions (wet soils, high clay/silt content, heavy residue) which prevents effective trench sidewall collapse
Solution Approach 1:
The closing wheel assembly transitions from a fixed angle configuration to a dynamic, adjustable angle system. The wedge assembly enables the closing wheel shaft to be positioned at different angles relative to the closing wheel arm, allowing the system to adapt to varying soil conditions while maintaining a relatively simple mechanical structure.
Solution Approach 2:
The invention changes the angular parameter of the closing wheel shaft relative to the closing wheel arm. By adjusting this angle through the wedge assembly, the system can optimize its performance for different soil types and conditions, transforming a static parameter into a variable one that can be tuned to specific operational requirements.
2Reliability
If the closing wheel shaft angle is fixed relative to the closing wheel arm, then the manufacturing precision is easier to maintain, but the system cannot adjust to collapse trench sidewalls in challenging soil conditions
Solution Approach 1:
The wedge assembly acts as an intermediary mechanism between the closing wheel shaft and the closing wheel arm. It provides a controlled means of adjusting the angular relationship between these components, enabling reliable trench closure in difficult soils without requiring a completely complex reconfiguration system.
Solution Approach 2:
The system introduces dynamic adjustability to the previously static angular relationship between the closing wheel shaft and arm. This allows the operator to optimize the closing wheel's effectiveness for specific soil conditions, thereby improving reliability without excessive complexity.
3Adaptability or versatility
If the closing wheel assembly is designed for simple operation, then it lacks the adjustment capability to handle various soil types, but adding adjustment mechanisms increases operational complexity
Solution Approach 1:
The wedge assembly provides a straightforward mechanism for changing the angular parameter of the closing wheel shaft. By using a wedge-based adjustment system rather than a complex multi-component mechanism, the invention maintains relative ease of operation while enabling adaptation to various soil types through angular adjustment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The adjustable wedge assembly ensures proper closure of seed trenches across various soil types, enhancing seed germination and yield by adapting to different soil conditions.
Implementation Method 1
an adjustable wedge assembly including a wedge coupled to the pivot joint
Data Source
AI summary
A row unit closing wheel assembly includes a closing wheel, a closing wheel arm, and a closing wheel shaft having a first end and a second end. The closing wheel is coupled to the first end and the closing wheel arm is coupled to the second end via a pivot joint. The row unit closing wheel assembly also includes an adjustable wedge assembly including a wedge coupled to the pivot joint. The adjustable wedge assembly is configured to adjust an angle of the closing wheel shaft relative to the closing wheel arm along a horizontal plane via movement of the closing wheel shaft about the pivot joint. The horizontal plane is orthogonal to a rotational axis of the pivot joint.