Agricultural Mowing Device with Pivotable Flail Blades
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Solution Overview
Problem
Current agricultural cutting devices are inefficient in mowing between adjacent crop rows, particularly in fields with tall grass or debris, and lack effective weed control solutions.
Innovation Solution
A cutting device attached to a tractor with pivotable shafts and rotatable blades, equipped with a motor for self-powered operation or PTO drive, featuring flail blades that can handle heavy grass and debris, and optional weed-control substance delivery systems to maintain a weed-free path between crop rows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standard cutting devices are used for mowing between crop rows, then the device structure is simple, but the cutting effectiveness is poor when encountering tall grass or debris
Solution Approach 1:
The cutting device employs a flail blade mechanism where multiple blades are freely suspended and pivot on pins, allowing them to dynamically adjust their position during operation. When blades encounter obstacles like tall grass or debris, they automatically lift and rotate away, preventing jamming while maintaining cutting effectiveness. This dynamic design resolves the contradiction by enabling the device to handle difficult materials without requiring a fundamentally more complex structure.
Solution Approach 2:
The cutting device is divided into multiple independent flail blades rather than using a single solid cutter. Each blade operates independently, allowing them to segment the cutting task and handle different materials separately. This segmentation enables the device to process tall grass and debris effectively while keeping each individual blade relatively simple in structure.
2Productivity
If flail blades are used to handle heavy grass and debris, then the cutting capability is improved, but the device complexity increases due to additional components
Solution Approach 1:
The flail blades are designed to be self-powered through the rotational motion of the drum, eliminating the need for separate drive mechanisms for each blade. The blades automatically pivot and adjust their own position when encountering obstacles, requiring no external control systems. This self-service approach enables the device to handle heavy grass effectively while minimizing additional complexity.
Solution Approach 2:
The device combines multiple functions into the flail blade assembly: cutting, impact resistance, and automatic obstacle detection are all integrated into the single blade mechanism. The drum structure serves both as a support framework and as the driving element, merging structural and functional roles to reduce overall component count.
3Adaptability or versatility
If the cutting device is made adjustable and pivotable to navigate uneven terrain, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The cutting device is mounted on a pivotable shaft that can dynamically adjust its angle relative to the tractor frame, allowing the device to adapt to uneven terrain. The shaft can pivot to maintain optimal cutting orientation while the device moves across varying ground conditions, providing adaptability without requiring complex active control systems.
4Productivity
If weed-control substances are delivered through the cutting device, then the weed control effectiveness is improved, but the device complexity increases due to additional delivery systems
Solution Approach 1:
The cutting device is designed to perform multiple functions: mechanical cutting of weeds and simultaneous delivery of weed-control substances. The flail blade assembly serves both as a cutter and as a platform for mounting substance delivery mechanisms, allowing the device to achieve enhanced weed control effectiveness while minimizing additional complexity through multi-functionality.
Data Source
AI summary
A mowing device for mowing material between rows of planted crops in an agricultural field, comprising a series of mower assemblies attached to a tractor and spaced from each other so that each mower assembly is located between an adjacent pair of rose of a printed crop. Multiple blades are mounted for rotation on each mower assembly for cutting material growing in the space between adjacent pairs of rows of a planted crop. A first deflector in front of each mower assembly moves planted crops around the outside of the mower assemblies so as not to be cut by the mower assemblies. A second deflector may be provided within each mower assembly and located rearwardly of the blades to push mowed material laterally toward the adjacent rows of a planted crop.