Grain Chaff Stream Vertical Elevation for Compact Harvester Design
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Solution Overview
Problem
Existing grain harvesting methods face inefficiencies in material flow and admixture separation, leading to longer conveyor systems and reduced working widths, which hinder autonomous movement and optimal grain collection.
Innovation Solution
A threshing method that imparts a transport movement with a vertical and working travel component to the grain/chaff stream, allowing for deflection and elevation, minimizing conveyor length and enabling a compact, variable-width system for efficient separation and collection of grain and chaff.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional linear threshing and conveying systems are used, then the system can process grain crops, but the conveyor system length increases and working width is reduced
Solution Approach 1:
The patent applies dimensionality change by transitioning from a conventional linear horizontal conveying system to a three-dimensional system that incorporates vertical elevation. The grain/chaff stream is elevated vertically and then conveyed horizontally, creating a compact spatial arrangement that reduces the overall conveyor length while maintaining processing capacity and working width
2Device complexity
If conventional linear threshing and conveying systems are used, then the system can process grain crops, but the system complexity and material flow inefficiencies increase
Solution Approach 1:
The patent segments the conveying process into distinct functional stages: elevation phase, horizontal conveying phase, and separation phase. This segmentation allows each component to be optimized independently and simplifies the overall system design by breaking down the complex material flow into manageable, efficient segments
Solution Approach 2:
The system employs dynamic adjustments in the grain/chaff stream transport, varying the elevation angle and conveying speed according to the specific phase of processing. This dynamic approach optimizes material flow efficiency throughout the threshing and separation process
3Adaptability or versatility
If the cutting mechanism is positioned traditionally, then the system structure is simple, but the load capacity and autonomous movement capability are reduced
Solution Approach 1:
The cutting mechanism is integrated into a multi-functional platform that serves both as the cutting station and the autonomous mobile unit. This universal design allows the same structure to perform cutting, processing, and autonomous navigation functions, enhancing adaptability without proportionally increasing complexity
Data Source
AI summary
A method and device for harvesting grain crops is provided. A threshing method includes separating grain from harvested material, which is fed to a threshing phase after a gathering process taking place against a direction of working travel. During threshing, the harvested material is processed as the respective grain crops and admixtures in the form of straw and chaff such that essential, dischargeable admixtures are separated from the grain crops, and these, in the form of a mixture with chaff or similar fine particles, are fed as a grain/chaff stream to a final cleaning. The grains free of these residual admixtures are subsequently collected as grain crops. During at least one feed phase preceding the final cleaning, a transport movement is imparted to the at least one grain/chaff stream with the transport movement having a component in a vertical direction and a component in the direction of working travel.