Auxiliary Processing System for Combine Harvester Tailings
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Solution Overview
Problem
Agricultural harvesters face inefficiencies and excessive wear when rethreshing tailings, either through overloading the main threshing mechanism or using cumbersome external units, which result in inferior processing and space occupancy.
Innovation Solution
An auxiliary processing system is integrated within the combine, utilizing a discharge chopper and rethreshing element to process tailings efficiently, reducing energy consumption and volume contribution to the cleaning system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the main threshing mechanism is used for rethreshing tailings, then the rethreshing function is provided, but the main threshing mechanism becomes overloaded and experiences excessive wear
Solution Approach 1:
The invention divides the threshing function into two separate mechanisms: the main threshing mechanism for initial grain separation and an auxiliary threshing mechanism specifically for rethreshing tailings. This segmentation allows each mechanism to perform its designated function without overloading, thereby reducing wear on the main threshing mechanism while maintaining rethreshing capability.
2Reliability
If an additional separate threshing mechanism is used for rethreshing, then the load on the main threshing mechanism is reduced, but the processing results are inferior and the device occupies large external space
Solution Approach 1:
The auxiliary threshing mechanism is nested within the existing combine structure, specifically utilizing the space between the cleaning fan and the grain elevator. This nesting approach allows the additional threshing mechanism to be housed within the combine's internal volume rather than requiring external mounting, thereby reducing external space occupancy while still providing separate rethreshing capability.
3Productivity
If an externally mounted additional threshing mechanism is used, then the main threshing mechanism load is reduced, but the device becomes cumbersome and occupies large exterior space
Solution Approach 1:
The invention merges the auxiliary threshing mechanism with the existing combine structure by integrating it into the internal space between the cleaning fan and grain elevator. This merging eliminates the need for separate external mounting structures and complex support systems, thereby reducing device complexity while maintaining the protective function for the main threshing mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces energy consumption and tailings volume, minimizing load on the cleaning system while maintaining efficient rethreshing without external components, thus enhancing operational efficiency and reducing wear on the main threshing mechanism.
Implementation Method 1
the tailings rethresher element may be driven by the discharge chopper
Data Source
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AI summary
An agricultural vehicle 100 includes a chassis 102, a threshing and separating mechanism 120 supported by the chassis 102 and configured for threshing and separating a crop material, a cleaning system 130 positioned downstream of the threshing and separating mechanism 120 in a direction of crop material flow, and an auxiliary processing system 200, 500 positioned downstream of the threshing and separating mechanism 120 in the direction of crop material flow. The auxiliary processing system 200, 500 has an inlet 202, 502 and an outlet 204, 504, and includes a discharge chopper 210, 510 having an end and a first direction of rotation R1 about an axis of rotation AR. The auxiliary processing system 200, 500 also includes at least one rethreshing element 220, 520 coaxially aligned with the discharge chopper 210, 510 and adjacent to the end of the discharge chopper 210, 510 and having a second direction of rotation R2.