Harvester Adapter Stalk Shredder Dynamics
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Solution Overview
Problem
Current grain crop harvesting technologies, particularly for sunflowers, result in significant grain loss due to seed drop during harvesting, especially when crops are down or entangled, and require separate processing of stubble, which is time-consuming and energy-intensive.
Innovation Solution
A harvester adapter with continuously adjustable stalk gathering unit speed synchronized with the combine harvester and retractable stalk shredder units allows for efficient harvesting of both tall and down crops with minimal grain loss, enabling single-step harvesting and stubble processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If stalk shredder units are mounted on the adapter frame at a fixed height, then the structure is simple, but the adapter cannot harvest down crops or crops with stalks lower than 1m
Solution Approach 1:
The stalk shredder units are mounted on pivotable arms that allow dynamic adjustment of the cutting height and angle. The arms can be lowered to harvest down crops or crops with shorter stalks, and raised for taller crops. This dynamic mounting structure enables the adapter to handle various crop conditions while maintaining a relatively simple overall design.
2Adaptability or versatility
If the adapter lowers the harvesting mechanism for down crops, then harvesting capability is improved, but the envelope slope becomes insufficient for urging dropped grains towards the rear
Solution Approach 1:
The adapter separates the harvesting function from the grain collection function. The harvesting mechanism can be lowered independently to cut down crops, while the grain collection envelope maintains its optimal slope for grain flow. This segmentation allows the harvesting mechanism to adapt to down crops without compromising the grain collection efficiency.
3Productivity
If separate stalk shredding is performed after harvesting, then stubble processing is thorough, but the process is time-consuming and energy-intensive
Solution Approach 1:
The stalk shredder units are integrated directly onto the adapter frame, combining the harvesting and stubble processing functions into a single operational pass. As the adapter moves through the crop, it simultaneously harvests the grain and shreds the stalks, eliminating the need for separate processing operations and reducing both time and energy consumption.
4Productivity
If the adapter width is increased to harvest more rows simultaneously, then productivity is improved, but road travel becomes difficult
Solution Approach 1:
The adapter frame incorporates collapsible or telescopic sections that allow the width to be dynamically adjusted. During harvesting operations, the frame can be extended to accommodate wider harvesting widths for increased productivity. When transitioning to road travel, the frame can be collapsed or retracted to a compact configuration that facilitates easy transport.
Data Source
AI summary
The invention relates to a harvester adapter with stalk shredder for harvesting grain crops, particularly sunflower, comprising a frame structure attached to a combine harvester, and at least two crop gathering units having a snout, where the crop gathering units are secured to the frame structure. Neighbouring crop gathering units are arranged such that a channel with an open leading end is formed between them, with a stalk gathering unit being disposed in driving connection with a harvesting mechanism on at least one side of the channels. The adapter has a collecting auger disposed rearward from the harvesting mechanism and at least one stalk shredder unit attached to the frame structure. The speed of the stalk gathering unit (5) is continuously adjustable by control orders given by the combine harvester and/or by a speed meter disposed on the adapter and/or by the operator, and the stalk shredder units (16) are attached to the frame structure (3) such that their position is adjustable in a direction perpendicular to the direction of travel.