Integrated Axle and Fan Wrapper for Harvesters
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Solution Overview
Problem
Agricultural harvesting machines, such as combines, face challenges in increasing harvesting and grain processing capacity while adhering to limited size and weight restrictions, leading to competing demands on space and complexity, which can result in increased weight, cost, and complexity.
Innovation Solution
An integrated axle and cleaning fan wrapper assembly that combines a hollow fan wrapper structure with outer axle structures, where the fan wrapper encloses a cleaning fan and serves as a structural member between the axles, providing a compact, stiff, and strong structure that replaces a conventional solid axle, allowing for improved airflow and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the vertical extent of the axle is increased to increase axle weight bearing capacity, then the axle strength is improved, but the interior space of the combine is reduced
Solution Approach 1:
The patent combines the axle structure with the cleaning fan wrapper into a single integrated assembly. The hollow fan wrapper structure serves dual purposes: it encloses the cleaning fan and simultaneously functions as part of the axle structure, providing structural support and weight bearing capacity without requiring additional vertical space that would reduce interior volume.
Solution Approach 2:
The integrated axle and cleaning fan wrapper assembly performs multiple functions within a single structure: it supports wheel mounting, bears vehicle weight, provides structural rigidity, and encloses the cleaning fan while directing airflow. This multi-functionality eliminates the need for separate components that would consume additional space.
2Productivity
If the cleaning fan output is increased to increase grain processing and handling capability, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The patent merges the cleaning fan enclosure (wrapper) with the axle assembly into a single integrated structure. This consolidation reduces the total number of separate components while maintaining or enhancing cleaning fan output capability, thereby improving grain processing productivity without proportionally increasing device complexity.
Data Source
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AI summary
An integrated axle and fan wrapper (12) for an agricultural harvesting machine (10), including a fan wrapper structure (14) connected between first and second spaced apart side sheets (28, 30) and extending sidewardly therebetween in spanning relation to the space, the wrapper structure (14) incorporating at least one cross member (44, 46, 48, 54) connected between the first and second side sheets for holding the side sheets in the parallel spaced relation, and the fan wrapper structure (14) defining and at least partially enclosing an internal cavity (36) configured for receiving a fan (16) for rotation therein. The integrated axle and fan wrapper (12) includes a first axle structure (20) mounted sidewardly outwardly of and integrated with the fan wrapper structure (14) and having a first outer end portion (66) configured for mounting a first wheel (24) thereon, and a second axle structure (22) mounted outwardly of the fan wrapper structure (14) and integrated therewith and having a second outer end portion (66) configured for mounting a second wheel (24) thereon, the fan wrapper structure (14) serving to support and stiffen, strengthen and integrate the axle structures.