Harvester Pickup Units With Internal Drive Transmission
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Solution Overview
Problem
Conventional pick-up devices for agricultural vehicles have a widened overall width due to external transmission gears, leading to inefficiencies in crop collection, as they cannot utilize the full transport width and cannot reliably pick up crops not in swaths, resulting in missed crops and increased operational complexity.
Innovation Solution
The design features receiving units with adjacent elements spaced to match or be smaller than the largest distance within a working unit's width, allowing for a continuous working width without gaps, with drive transmission elements integrated within the working width to enable closer arrangement of receiving units and improved maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If transmission gears are arranged externally outside the working width, then the drive transmission is simplified and accessible, but the overall width of the device increases beyond the working width, reducing the utilization of transport width and creating gaps between adjacent receiving units
Solution Approach 1:
The transmission gears are repositioned from an external arrangement (outside the working width) to an internal arrangement (within the working width). This dimensional relocation allows the receiving units to be placed closer together, eliminating gaps and fully utilizing the transport width for productive work.
Solution Approach 2:
The transmission gears are nested within the working width envelope, fitting inside the space defined by the receiving units. This nesting approach allows the drive mechanism to be integrated into the working width without increasing the overall device footprint.
2Productivity
If receiving units are arranged next to each other with external transmission gears, then the working width is limited by the width of individual units, but additional receiving units cannot be connected externally due to the transmission gear gap
Solution Approach 1:
The receiving device is divided into multiple independent receiving units that can be arranged side by side. Each unit has its own transmission gear positioned within its working width, allowing modular expansion without creating gaps between units.
Solution Approach 2:
By moving transmission gears from external to internal positioning, the spatial arrangement allows receiving units to be connected seamlessly in the lateral direction, enabling continuous working width across multiple units without gaps.
3Device complexity
If the distance between outer receiving elements of adjacent units is large, then the transmission gear arrangement is simplified, but crops remain on the ground in the transition area between units
Solution Approach 1:
The transmission gears are repositioned within the working width, which reduces the distance between outer receiving elements of adjacent units. This closer spacing ensures continuous coverage of the ground surface, preventing crop residue in transition areas.
Solution Approach 2:
The spatial parameter (distance between receiving elements) is changed by relocating transmission gears internally. This parameter change creates a continuous receiving surface across adjacent units, eliminating gaps where crops would remain on the ground.
Data Source
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AI summary
The forage harvesting attachment (2) for an agricultural machine (1), to gather up crops lying on the ground, has at least two pick-up units (3-5). In the working position, the gap between the outer gatherers of two neighboring pick-up units is equal to or less than the largest gap between two gatherers within the working width of a pick-up unit.