Dynamic Linkage for Agricultural Tool Gangs
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Solution Overview
Problem
Rigidly-mounted agricultural implement tool gangs are ineffective in uneven field conditions and prone to damage from obstacles, as they fail to maintain consistent furrow depth and protect tools from strikes.
Innovation Solution
A dynamic linkage system that adjusts to maintain consistent furrow depth across multiple crop rows and accommodates surface and subsurface obstacles by using a spring subassembly and articulated connectors to scissor and elevate tool gangs, preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rigidly-mounted tool gangs are used, then structural stability is improved, but adaptability to uneven field conditions deteriorates
Solution Approach 1:
The patent applies dynamics by replacing rigid mounting with a dynamic linkage system comprising articulated connectors and spring subassemblies. The articulated connectors allow relative motion between the toolbar and tool gang, while the spring subassemblies provide flexible support that adapts to terrain variations. This enables the tool gang to maintain consistent furrow depth while accommodating surface undulations and obstacles.
2Ease of manufacture
If rigidly-mounted tool gangs are used, then manufacturing simplicity is improved, but reliability against obstacle damage deteriorates
Solution Approach 1:
The patent implements beforehand cushioning by incorporating spring subassemblies between the toolbar and tool gang. These springs are pre-configured to absorb impact forces from obstacles such as rocks and debris. When the tool gang encounters an obstacle, the springs compress to cushion the blow, preventing damage to the tools and mounting structure while maintaining operational reliability.
3Adaptability or versatility
If dynamic linkage with spring subassembly is used, then adaptability to uneven terrain is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the mounting system into discrete modular components: articulated connectors with pivot points, spring subassemblies with individual springs, and mounting brackets. Each component performs a specific function and can be independently manufactured, adjusted, or replaced. This modular segmentation manages complexity while achieving adaptability to uneven terrain through the coordinated action of these segmented elements.
4Reliability
If articulated connectors are used, then protection from obstacle strikes is improved, but manufacturing complexity increases
Solution Approach 1:
The articulated connectors are designed to be self-aligning and self-adjusting through their pivot point mechanism. When the tool gang encounters obstacles or terrain variations, the articulated connectors automatically adjust their angular position to maintain proper tool orientation and absorb shocks. This self-service capability provides protection from obstacle strikes without requiring complex active control systems or sophisticated manufacturing processes.
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 dynamic linkage ensures consistent furrow depth and protects tools from damage by adjusting to uneven terrain and obstacles, enhancing operational efficiency and reducing equipment downtime.
Implementation Method 1
a spring subassembly and articulated connectors to scissor and elevate tool gangs
Data Source
AI summary
A dynamic linkage for a tool gang on a multi-row agricultural implement. The tool gang can include one or more ground-working or other agricultural tools, which are mounted on a tool gang frame. The tool gang frame is connected to a toolbar by the dynamic linkage, each includes adjusting mechanisms for limiting vertical travel and down-pressure forces applied to the tools. The dynamic linkage is configured for tripping to raise the tool gang for clearing a surface or subsurface obstacle.