Sharpened Leading Edge Teeth for Crop Residue Cutting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing crop debris clearing devices for agricultural implements lack sharpened leading edges and efficient cutting capabilities, limiting their effectiveness in clearing debris and residue in the soil.
Innovation Solution
A debris clearing apparatus featuring rotatable discs with a plurality of teeth, where the leading edges are sharpened to create cutting edges, and the discs are arranged toed-in relative to the direction of travel, enhancing cutting and clearing action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional debris clearing discs without sharpened leading edges are used, then the device structure is simpler and easier to manufacture, but the ability to cut through crop residue and debris is insufficient
Solution Approach 1:
The patent applies local quality by sharpening only the leading edges of the teeth while leaving other portions of the teeth and discs with standard geometry. This selective sharpening provides enhanced cutting capability exactly where needed (at the leading edge that contacts debris first) without requiring complex manufacturing of the entire disc structure, thus resolving the contradiction between ease of manufacture and debris clearing efficiency
2Device complexity
If discs without sharpened leading edges are used, then manufacturing cost and complexity are reduced, but the cutting action on residue in the soil is inadequate
Solution Approach 1:
The invention implements local quality by applying sharpening treatment specifically to the leading edges of the teeth. This creates a localized high-performance cutting zone that significantly improves reliability of cutting action on residue, while maintaining simple overall disc structure and minimal additional complexity in the device design
3Ease of manufacture
If standard teeth profiles are used on debris clearing discs, then the apparatus is easier to manufacture, but the ability to clear debris and cut residue during operation is limited
Solution Approach 1:
The patent resolves this contradiction by applying local quality enhancement through sharpened leading edges on the teeth. This provides superior debris clearing efficiency at the critical cutting point while requiring minimal additional manufacturing steps compared to standard teeth profiles, thus achieving high productivity without sacrificing ease of manufacture
Data Source
AI summary
A debris clearing apparatus for use with an agricultural implement has a pair of rotatable discs each having a plurality of teeth extending from a periphery thereof. The teeth on the discs each have a profile comprising a leading edge and a trailing edge. The leading edges are sharpened to create cutting edges to cut through crop residue and other debris. The leading cutting edge can be a straight edge with an outer edge formed at the distal tip of the tooth between the leading and trailing edges. Alternatively, the leading cutting edge can be a curved edge with a sharp outer point between the leading and trailing edges. The discs are arranged so that geometric planes containing the first and second discs intersect and the discs are toed-in toward each other relative to a direction of travel of the implement.