Flexible Seed Disc Deflector Mechanism for Side Hill Singulation
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Solution Overview
Problem
Seed singulation and spacing issues occur during side hill operations due to lateral shifting of seeds away from the seed disc in existing seed metering systems, leading to undesirable seed distribution in the soil trench.
Innovation Solution
Incorporation of deflectors within the seed meter's inner chamber and a seed disc made from flexible material that deflects during rotation, ensuring proper seed alignment and discharge across a range of operating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid seed disc is used in conventional seed meters, then the structure is simple and manufacturing is easy, but seed singulation and spacing deteriorate during side hill operations due to lateral seed shifting
Solution Approach 1:
The seed disc transitions from a rigid structure to a flexible structure that can dynamically adapt its shape during operation. The flexible seed disc deflects laterally in response to seed pool shifts caused by side hill conditions, maintaining proper seed alignment and singulation without requiring complex mechanical adjustment mechanisms.
Solution Approach 2:
The physical parameter of the seed disc changes from rigid to flexible, allowing it to deform and adapt to varying operating conditions. This parameter change enables the seed disc to maintain effective seed metering performance across different terrain conditions without requiring multiple configurations or adjustments.
2Manufacturing precision
If the seed disc is made from flexible material, then seed alignment is maintained during side hill operations, but manufacturing complexity and material selection constraints increase
Solution Approach 1:
The seed disc is constructed using flexible material that forms a thin-walled structure capable of lateral deflection. This flexible shell design allows the seed disc to adapt to side hill conditions while maintaining seed spacing precision, replacing rigid manufacturing processes with flexible material forming techniques.
3Reliability
If deflectors are added to the inner chamber, then seed alignment is improved under varying operating conditions, but device complexity increases
Solution Approach 1:
The deflectors act as intermediary elements between the seed pool and the flexible seed disc. These deflectors guide and align seeds laterally, working in conjunction with the flexible disc to ensure proper seed alignment and discharge reliability without requiring direct mechanical intervention or complex control systems.
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 flexible seed disc effectively maintains seed singulation and spacing consistency even in challenging conditions like side hills, enhancing the precision and reliability of seed placement in agricultural seeding machines.
Implementation Method 1
a seed disc including at least a portion thereof comprised of a flexible material which is deflectable by the at least one deflector during rotation within the housing
Data Source
Figure 1
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Figure 4
AI summary
A seed meter (30) for use in an agricultural seeding machine (10) includes a housing (36) having an inner chamber (38) and one or more deflectors (48) within the inner chamber (38), and a seed disc (42) rotatably carried by the housing (36). The seed disc (42) includes at least a portion thereof formed from a flexible material which is deflectable by the one or more deflectors (48) during rotation within the housing (36).