Harvest Header Crop Shields for Inter-seeded Protection
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Solution Overview
Problem
Conventional harvest headers often damage inter-seeded crops by cutting both the first and second crops, leading to reduced yields, as they are not designed to differentiate between the two, especially when the second crop is not yet mature.
Innovation Solution
A harvest header apparatus with crop shields mounted along the header table, aligned with the rows of the second crop, which pushes the second crop plants downward and under the knife, preventing them from being cut, while allowing the first crop to be harvested between the shields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the header operates at a high cutting position to avoid cutting the second crop, then the second crop is protected, but the first crop cannot be harvested effectively when it is short or lying down
Solution Approach 1:
The header table is divided into multiple sections with individual shields for each row of the second crop. Each shield can be independently positioned to protect only the specific row of inter-seeded crops while allowing the knife to cut the first crop in the spaces between rows. This segmentation allows selective protection without compromising overall harvesting effectiveness.
Solution Approach 2:
Crop shields are provided only at locations corresponding to rows of the second crop, rather than across the entire header table. The shields create localized protection zones where the second crop is pushed down and protected from cutting, while areas between the shields allow normal cutting of the first crop. This local quality approach ensures protection where needed without interfering with harvesting elsewhere.
2Productivity
If the header operates at a low cutting position to harvest the first crop effectively, then the first crop is harvested completely, but the second crop is cut and damaged
Solution Approach 1:
Crop shields serve as intermediary elements between the knife and the second crop. These shields physically intercept the second crop plants and push them downward, creating a protective barrier that prevents direct contact between the knife and the inter-seeded crops. The shields mediate the interaction between the cutting mechanism and the protected crop, allowing low-position cutting without damage to the second crop.
3Object-affected harmful factors
If crop shields are added to protect the second crop, then the second crop is protected from cutting, but the device complexity increases
Solution Approach 1:
The crop shields are constructed from flexible, thin-walled material that can bend and deform as it contacts the second crop plants. This flexibility allows the shields to gently push crops downward without breaking or requiring complex mechanical mechanisms. The thin-film construction keeps the shields lightweight and simple in structure while maintaining their protective function.
Data Source
AI summary
A harvest header apparatus for harvesting a first crop in a field while preventing damage to a second later crop planted in the same field. A header table with a knife mounted along a lower front edge thereof has a plurality of crop shields attached to and spaced along the header table at a selected shield spacing, each crop shield extending forward from a rear portion thereof located under the knife to a forward end thereof located forward of the knife. A forward portion of each crop shield slopes upward such that crop plants contacted by the forward portion of each crop shield are pushed downward and pass under the knife without contacting the knife. The shield spacing is selected so the crop shields move along rows of second crop and push the second crop plants down and under the table such that same are not contacted by the knife.