Flexible Infeed Deck for Agricultural Headers
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Solution Overview
Problem
Agricultural harvesters face challenges in maintaining a consistent cutting height on uneven terrain, leading to uneven crop stubble and increased wear and maintenance due to the slow response of cutter bar assemblies to terrain changes, especially at higher ground speeds or on uneven ground.
Innovation Solution
An intermediate frame assembly and an infeed deck system that allows the cutter bar assembly to pivot and rotate with the header, enabling it to follow terrain contours while maintaining a consistent cutting height, and an infeed deck that twists to accommodate header movement, facilitating the transfer of crops from lateral decks to the infeed belt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cutter bar assembly is made rigid to maintain structural stability, then the structural strength is improved, but the ability to adapt to uneven terrain deteriorates
Solution Approach 1:
The header is divided into multiple segments including a main header frame and at least one laterally movable section. The cutter bar assembly is segmented across these sections, allowing each segment to move independently laterally and rotate relative to the main header frame. This segmentation enables the cutter bar to adapt to uneven terrain while maintaining overall structural integrity through the connections between segments.
Solution Approach 2:
The cutter bar assembly transitions from a static rigid structure to a dynamic system where laterally movable sections can shift position and rotate relative to the main header frame. This dynamic capability allows the cutter bar to respond to terrain variations by adjusting the position and orientation of its segments, resolving the contradiction between rigidity and adaptability.
2Stability of the object's composition
If the cutter bar assembly responds slowly to terrain changes, then the structural stability is maintained, but the cutting height consistency deteriorates
Solution Approach 1:
The laterally movable sections are designed to dynamically respond to terrain changes by laterally shifting and rotating in real-time as the header moves forward. This dynamic response allows the cutter bar to maintain consistent cutting height across uneven terrain without compromising structural stability, as the sections can adjust their positions while remaining structurally connected to the main header frame.
3Productivity
If the header operates at higher ground speeds on uneven terrain, then the productivity is improved, but the cutting height consistency deteriorates
Solution Approach 1:
The dynamic laterally movable sections enable the header to operate at higher ground speeds on uneven terrain by rapidly adjusting to terrain variations. The sections can laterally shift and rotate quickly enough to maintain cutting height consistency even at elevated operating speeds, allowing the system to achieve both high productivity and precision.
Solution Approach 2:
The system changes physical parameters including the lateral position and rotational angle of the movable sections to adapt to terrain variations at higher speeds. By dynamically adjusting these parameters, the cutter bar maintains consistent cutting height while operating at improved ground speeds.
4Strength
If the infeed deck is made rigid to maintain structural stability, then the structural strength is improved, but the ability to accommodate header movement deteriorates
Solution Approach 1:
The infeed deck is segmented with the laterally movable section that can shift and rotate relative to the main header frame. This segmentation allows the infeed deck to accommodate header movements and terrain variations while maintaining structural strength through the connected segments. The movable section acts as a flexible element that absorbs movement stresses without compromising overall structural integrity.
5Adaptability or versatility
If the infeed deck is made flexible to accommodate header movement, then the terrain adaptability is improved, but the structural strength deteriorates
Solution Approach 1:
The infeed deck combines rigid and flexible elements through segmentation. The main infeed deck structure provides structural strength, while the laterally movable section provides flexibility to accommodate header movement and terrain variations. This segmented design resolves the contradiction by distributing structural and flexible functions to different segments.
Solution Approach 2:
The laterally movable section acts as a flexible element within the infeed deck assembly, allowing the deck to adapt to terrain variations and header movements while the main rigid structure maintains structural strength. This flexible-rigid combination enables both terrain adaptability and structural integrity.
Data Source
AI summary
An infeed deck for an agricultural header includes an infeed belt configured to convey agricultural crops toward an auger of the agricultural header and a roller configured to drive rotation of the infeed belt or configured to be driven via rotation of the infeed belt. The roller is configured to couple to an intermediate frame assembly coupled to the agricultural header and is configured to pivot about an axis extending parallel to a lateral axis and to pivot relative to an intermediate frame of the intermediate frame assembly. The intermediate frame assembly is configured to enable a header frame of the agricultural header to rotate about a longitudinal axis and relative to the intermediate frame.