Adjustable Stalk Stomper Curtain Assembly for Agricultural Harvesters
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Solution Overview
Problem
Conventional corn headers face challenges with damage from standing stalks and flying debris during harvesting, as existing stalk stompers are heavy, difficult to attach, and increase the harvester's weight, leading to soil compaction and tripping hazards.
Innovation Solution
An adjustable assembly with a control arm and members that can be rotated to knock down stalks and shield from debris, using lightweight materials and a biasing mechanism, allowing for independent adjustment and modular design to reduce weight and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional stalk stompers are attached to corn headers, then protection from standing stalks is improved, but weight increases significantly
Solution Approach 1:
The patent applies parameter changes by transitioning from traditional heavy metal materials to lightweight materials such as polymers, composites, or foam cores with skin layers. This material parameter change maintains the protective function against standing stalks while dramatically reducing the weight of stalk stompers and chopper curtains, directly resolving the contradiction between reliability and weight.
2Reliability
If conventional stalk stompers are attached via brackets to the toolbar, then protection from standing stalks is improved, but the header complexity increases
Solution Approach 1:
The patent merges the stalk stompers and chopper curtains directly onto the header structure, eliminating the need for separate brackets and toolbar attachments. This integration combines multiple protective functions into a unified assembly that attaches directly to the header, reducing the number of components and simplifying the overall attachment system while maintaining protection effectiveness.
3Reliability
If conventional stalk stompers project out from behind the header, then protection from standing stalks is improved, but safety deteriorates due to tripping hazards
Solution Approach 1:
The patent repositions the stalk stompers and chopper curtains in a different spatial dimension by mounting them flush against or integrated into the header's rear surface rather than projecting outward. This dimensional change in positioning eliminates the overhang that creates tripping hazards while maintaining the protective function, as the elements remain in place to knock down stalks and block debris without extending into the operator's path.
4Strength
If conventional stalk stompers are made from heavyweight materials, then durability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies parameter changes in material selection, using modern polymers, composite materials, or foam-based structures with protective skin layers that provide sufficient durability and impact resistance. These materials offer a favorable strength-to-weight ratio, maintaining the ability to knock down stalks and block debris while being lightweight enough for easy manual handling, repositioning, and removal by operators.
Data Source
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Figure 3A~3B
AI summary
An adjustable stalk stomper and/or chopper curtain assembly (300) for a header (200) of an agricultural harvester. The adjustable assembly (300) comprises a control arm (302), at least one member connected to the control arm (302), wherein the at least one member is configured to knock down plant stalks and/or to shield the agricultural harvester from flying debris, and wherein the control arm (302) is configured to provide for adjustment of the orientation of the at least one member relative to the ground and the header (200). Also disclosed are agricultural harvester headers (200) comprising the above adjustable assembly (300) and a frame (202) having a toolbar (208), as well as agricultural harvesters (102) comprising such headers (200) and other machinery comprising such adjustable assemblies (300).