Modular Harvester Auger Coupling for Wide Headers Without Mid Supports
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Solution Overview
Problem
Existing harvesting headers face challenges in exceeding a width of 12.2 meters due to weight limitations and material flow restrictions caused by conventional support systems, leading to vibration and assembly difficulties, especially in modular augers.
Innovation Solution
A modular harvesting header design with a central module and lateral extensions, using flanges for precise alignment and a sleeve within the auger tubes for torque transmission without intermediate supports, ensuring collinearity and smooth material flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the header width is increased beyond 12.2 meters, then the productivity is improved, but the weight increases excessively
Solution Approach 1:
The header is divided into multiple modular sections that can be assembled together. Each module contains its own auger segments and support structures, allowing the header to achieve greater width through composition of lighter individual modules rather than one large heavy structure.
Solution Approach 2:
The support structures are repositioned from intermediate locations to the extreme ends of the header. This dimensional relocation eliminates the need for additional intermediate supports, reducing overall structural weight while maintaining structural integrity across the extended width.
2Stability of the object's composition
If conventional support systems are used in modular augers, then the structural stability is improved, but the material flow is restricted and vibration increases
Solution Approach 1:
Intermediate support structures that were previously necessary for structural stability are removed from the design. The system achieves stability through alternative means (end supports and modular construction) while eliminating the harmful interference these supports caused to material flow.
Solution Approach 2:
Instead of providing support at multiple intermediate points along the auger, the support strategy is inverted to provide support only at the extreme ends. This counterintuitive approach eliminates material flow restrictions while maintaining structural stability through the modular section design.
3Strength
If modular auger sections are connected with intermediate supports, then the structural integrity is improved, but the assembly complexity and difficulty increase
Solution Approach 1:
The auger is segmented into modular sections that can be independently manufactured and assembled. Each segment is designed to connect seamlessly to adjacent segments through standardized interfaces, simplifying assembly while maintaining structural integrity across the complete header.
Solution Approach 2:
The modular sections are designed with universal connection features that serve multiple functions: structural support, torque transmission, and alignment. This multi-functionality eliminates the need for separate intermediate support structures, reducing assembly complexity.
Data Source
AI summary
A harvesting header having a transversal collector-conveyor auger, having a main module and lateral modules to extend its working width. Module end flanges are a pin-guides for preliminary alignment. Thereafter bolts are inserted inside a threaded bushing screwed into one of the flanges until it bottoms out against the other flange having a smaller hole to allow only the bolt to pass. The bolt is tightened with a nut and the bushing with a locknut. Auger modules are interconnected by an internal sleeve fitting across the tubular ends of each module. One sleeve portion includes a first ring fixed inside the module by welding studs applied through perforations in the auger tube and a second ring is joined to the tube end by a weld seam. The other portion has a second pair of rings with threaded holes to receive bolts passing through the wall of the other auger module.