Agricultural Header Swath Gate for Crop Flow Control
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Solution Overview
Problem
Agricultural vehicles with counter-rotating disc cutters concentrate crop material flow, making it difficult to uniformly disperse cut crop material for enhanced drying, especially for green crops with high moisture content.
Innovation Solution
A movable swath gate with integrated spreaders and convergers that can switch between spreading and converging positions to control the crop flow stream, allowing for uniform distribution or concentration of cut crop material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If counter-rotating disc cutters are used to cut crop material, then the crop material flow is concentrated in streams centered behind the cutters, but this concentration makes it difficult to uniformly disperse the cut crop material for enhanced drying
Solution Approach 1:
The swath gate is made movable between a spreading position and a converging position, allowing the system to dynamically adjust its configuration. When in the spreading position, the gate laterally disperses the concentrated crop material stream into a wider, more uniform distribution pattern, enhancing drying efficiency. When in the converging position, it concentrates the material flow. This dynamic adjustment resolves the contradiction by enabling uniform dispersion capability while maintaining the concentrated flow generation from the cutters.
Solution Approach 2:
The swath gate assembly is segmented into distinct functional components: a spreader portion with lateral dispersing elements and a converger portion with material-concentrating elements. This segmentation allows each portion to perform its specific function independently, with the spreader addressing the uniform dispersion need and the converger maintaining the concentrated flow path, thereby resolving the contradiction between concentration and dispersion requirements.
2Adaptability or versatility
If both spreader and converger are always present in the crop flow stream, then both functions can be performed, but the device complexity and number of parts increase
Solution Approach 1:
The swath gate is designed so that either the spreader or the converger is positioned in the crop flow stream at any given time, depending on the gate's position. When the gate is in the spreading position, only the spreader interacts with the crop material; when in the converging position, only the converger is in the material stream. This dynamic configuration allows both functions to be available without requiring both components to be permanently present, reducing device complexity while maintaining functional versatility.
Solution Approach 2:
The swath gate assembly serves multiple functions through a single integrated structure that can operate in different modes. The same gate mechanism provides both spreading and converging capabilities by moving between positions, eliminating the need for separate independent spreader and converger devices. This multi-functionality reduces the number of parts while maintaining adaptability to different operational requirements.
3Productivity
If the spreader and converger both remain in the crop flow stream simultaneously, then both functions can operate, but they may interfere with each other's functions
Solution Approach 1:
The system dynamically positions either the spreader or the converger in the crop flow stream based on the swath gate's position. When the gate is in the spreading position, the spreader is in the material stream while the converger is positioned out of the stream, preventing interference. When the gate is in the converging position, the converger is in the stream while the spreader is out of the stream. This dynamic separation eliminates functional interference while maintaining operational efficiency through rapid switching between modes.
Data Source
AI summary
A header includes: a header frame; a cutter carried by the header frame; a roll disposed rearwardly of the cutter and configured to convey cut crop material rearwardly in a crop flow stream; a swath gate coupled to the header frame and movable between a spreading position and a converging position; a spreader coupled to the swath gate and configured to laterally spread the crop flow stream as the crop flow stream flows across the spreader; and a converger coupled to the swath gate and configured to converge the crop flow stream toward a centerline of the swath gate as the crop flow stream flows across the converger. The spreader and the converger are configured to not be in the crop flow stream at the same time, depending on the position of the swath gate.