Multi-layer Segmentation Stalk Cutter for Ratoon Rice Harvesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ratoon rice harvesting methods, including manual harvesting and existing harvesters, are inefficient and cause significant damage to rice stubble, limiting the widespread adoption of ratoon rice cultivation due to high rolling rates and low work efficiency.
Innovation Solution
A multi-layer segmented-stubble cutter device with a header, segmenting cutter, and stubble cutter, controlled by actuators and sensors, which acquires images of ratoon rice and adjusts cutting heights to minimize stubble damage and optimize harvesting efficiency, integrated with a combined harvester featuring a threshing and crushing drum, disc throwing device, and double-cylinder screen cleaning system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual harvesting is used, then labor intensity is reduced, but work efficiency is low and time-consuming
Solution Approach 1:
The harvester is equipped with automatic cutting height adjustment systems that use sensors to detect stubble height and automatically adjust cutting parameters, enabling the machine to regulate itself without continuous manual intervention while maintaining high harvesting efficiency
Solution Approach 2:
Manual harvesting operations are replaced by an automated mechanical harvesting system with computer-controlled cutting mechanisms, sensor-based height detection, and automatic parameter adjustment, eliminating manual labor while significantly increasing productivity
2Productivity
If existing harvesters are used, then harvesting can be automated, but rolling rate is high (40%-50%) and stubble damage is large
Solution Approach 1:
The harvester employs dynamically adjustable cutting height mechanisms that can adapt in real-time to varying stubble conditions, and the cutting parameters are automatically adjusted based on sensor feedback to minimize stubble damage while maintaining harvesting efficiency
Solution Approach 2:
The system changes cutting parameters such as cutting height, cutting speed, and cutter engagement based on real-time detection of stubble characteristics, optimizing the harvesting process to reduce rolling rate and stubble damage while maintaining automation
3Productivity
If conventional header size is used, then harvesting capacity is sufficient, but machine size and weight increase
Solution Approach 1:
The header is segmented into modular components with selective cutting zones that can be independently adjusted or removed, allowing the harvesting capacity to be maintained while reducing overall header size and machine weight through optimized component configuration
Solution Approach 2:
The header design applies different cutting characteristics to different zones based on local crop density and stubble height variations, allowing efficient harvesting with a smaller, lighter overall structure rather than requiring a large uniform header across the entire width
Data Source
AI summary
A multi-layer segmentation/stalk cutter device for a first season of double-crop rice and a control method, and a combine harvester for a first season of double-crop rice, the multi-layer segmentation/stalk cutter device comprising: a cutting platform, a segmenting cutter and a stalk cutter, at least one segmenting cutter being disposed at a lower rear portion of the cutting platform, the segmenting cutter being hinged on a moving chassis, and a second execution mechanism controlling the cutting height of the segmenting cutter; the stalk cutter being disposed at a lower rear portion of the segmenting cutter, the stalk cutter being hinged on the moving chassis, and a third execution mechanism controlling the cutting height of the stalk cutter.