Cutting Table Length Adaptation in Agricultural Harvesters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Agricultural harvesters face challenges in maintaining a homogeneous material flow due to uneven cutting table lengths, leading to inefficiencies and crop losses, as existing systems require manual adjustment and struggle to adapt to changing harvesting conditions.
Innovation Solution
An automated driver assistance system that adjusts the cutting table length based on real-time harvested material throughput and vibration coefficients, using sensors and computing devices to optimize the cutting unit parameters, including the cutting table length, reel vertical position, and reel longitudinal position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cutting table length is manually adjusted by the driver, then the cutting table can be adapted to harvesting conditions, but the driver cannot continuously adapt to changing conditions and manual control is cumbersome
Solution Approach 1:
The system enables automatic self-adjustment of the cutting table length by using sensors to detect material flow conditions and automatically actuating the cutting table positioning mechanism, eliminating the need for manual driver intervention while maintaining continuous adaptation to harvesting conditions
Solution Approach 2:
The system implements a feedback control loop where sensors continuously monitor material flow homogeneity and provide signals to the control unit, which automatically adjusts the cutting table length to maintain optimal harvesting conditions based on real-time feedback
2Productivity
If the cutting table length is adjusted too short, then the harvested material is pushed toward the auger, but material collects between the blade and auger causing uneven supply
Solution Approach 1:
Sensors detect material accumulation between the blade and auger and provide feedback signals to the control unit, which automatically extends the cutting table length to restore homogeneous material flow and prevent backlog formation
3Productivity
If the cutting table length is adjusted too long, then the harvested material collects behind the blade, but the material is pressed toward the auger causing uneven supply
Solution Approach 1:
Sensors detect material accumulation behind the blade and provide feedback signals to the control unit, which automatically shortens the cutting table length to prevent material pressing and restore even material flow to the auger
Data Source
AI summary
An agricultural harvester is disclosed. The agricultural harvester includes a cutting unit that has a cutting table adjustable in its cutting table length, a reel adjustable to a reel vertical position and reel longitudinal position, an inclined conveyor downstream from the cutting unit, and a driver assistance system. The driver assistance system autonomously determines, using at least one input variable, at least one machine parameter and specifies the machine parameter to the cutting unit. The machine parameter can include one or more of the cutting table length, the reel vertical position, or the reel longitudinal position. In particular, the driver assistance system may determine a harvested material throughput and a vibration coefficient describing the fluctuation in the harvested material throughput in a region lying in front of the threshing system and adapt or modify the cutting table length based on the determined vibration coefficient.