Maize Header Turning Drum Pivoting for Transport Width
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Solution Overview
Problem
Maize headers with increasing working widths face challenges in being transported efficiently due to exceeding permissible transport widths, necessitating a design that allows for compact transport while maintaining a large working width up to 12 meters.
Innovation Solution
The integration of rotatable feeding and turning drums with frustoconical envelopes, which pivot relative to the mowing and infeed units, allows the maize header to be rearranged into a transport position where the turning drums' envelopes fit within the permissible transport width, enabling road transport without exceeding dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the working width of the maize header is increased to harvest larger areas, then the productivity is improved, but the transport width exceeds the permissible limit for road transport
Solution Approach 1:
The maize header employs movable and pivotable components including laterally movable mowing and infeed units, and pivotable turning drums that can rotate about horizontal axes. These dynamic elements allow the header to transform between a working configuration with large working width and a transport configuration with reduced transport width, resolving the contradiction between productivity and transportability
Solution Approach 2:
The turning drums are designed with frustoconical envelopes that utilize three-dimensional space arrangement. By optimizing the spatial arrangement and orientation of these cylindrical components during transformation, the design achieves compact transport dimensions while maintaining large working width capability
2Productivity
If the maize header is designed with a large working width to maximize harvest area, then the productivity is improved, but the device complexity increases due to additional components needed for width adjustment
Solution Approach 1:
The turning drums serve multiple functions: they act as turning members to redirect crop flow, provide structural support for the laterally movable units, and enable the transformation between working and transport positions. This multi-functionality reduces the need for separate dedicated components, thereby managing device complexity while achieving large working width
Solution Approach 2:
The design merges the turning drum function with the structural support function and the transformation mechanism. The laterally movable mowing and infeed units are integrated with the turning drum assembly, combining multiple subsystems into unified components that reduce overall structural complexity
Data Source
AI summary
A maize header (2) comprising multiple mowing and infeed units (10) and comprising feeding drums (12) and turning drums (14, 15) arranged behind the mowing and infeed units (10), in the working position a feeding drum (12) is behind the two central mowing and infeed units (10a) and a first turning drum (14) is behind a transfer region between the central mowing and infeed units (10a) and a first lateral mowing and infeed unit (10b) that is laterally next to it, and to transfer the maize header (2) between the two positions, the mowing and infeed units (10) pivot relative to one another about axes (16) so the first lateral mowing and infeed units (10b) and one of the first turning drums (14) is pivotable relative to the adjoining central mowing and infeed unit (10a), so that, in the transport position, a frustoconical envelope (14a) of the respective first turning drum (14) is completely inside a permissible transport width of the maize header (2).