Actuated Threshing Cage Vanes for Dynamic Grain Loss Control
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Solution Overview
Problem
Existing threshing systems in agricultural combines lack the ability to adjust threshing cage vane positions in real-time during operation, making it difficult to respond to changing crop conditions and optimize performance parameters such as grain loss and power consumption.
Innovation Solution
A control system that monitors grain loss and engine power reserve to adjust the orientation of threshing cage vanes, using actuators and a microprocessor-based controller to optimize vane positions dynamically, balancing grain loss and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual setting of threshing cage vane position is used, then the system structure is simple, but the ability to adjust during operation is lost
Solution Approach 1:
The patent applies the Dynamics principle by transitioning from static manual-adjustment vanes to dynamically adjustable vanes controlled by actuators. The control system receives input signals and automatically adjusts vane positions during operation, enabling real-time adaptation to changing crop conditions while maintaining a manageable system structure through automated control architecture.
Solution Approach 2:
The control system implements self-service by automatically adjusting vane positions based on pre-programmed algorithms and sensor feedback without requiring continuous manual intervention. The system monitors operating parameters and autonomously optimizes vane settings, reducing operator workload while improving adaptability to varying harvest conditions.
2Speed
If fixed vane positions are used, then the device complexity is low, but the response to changing crop conditions is delayed
Solution Approach 1:
The patent implements feedback control by continuously monitoring operating parameters such as crop density, moisture content, and machine speed, then using this information to automatically adjust vane positions. The control system compares actual performance with target values and makes real-time corrections, enabling rapid response to changing crop conditions while managing complexity through structured feedback loops.
Solution Approach 2:
The patent replaces manual mechanical adjustment with automated electro-mechanical control systems. actuators and sensors substitute for manual operation, enabling faster and more precise adjustments to vane positions in response to changing harvest conditions, while the control algorithm manages system complexity through software-based decision logic.
3Loss of substance
If real-time adjustment of vane positions is implemented, then grain loss is reduced, but power consumption increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting vane positions based on real-time monitoring of crop conditions, machine speed, and harvest performance. The control system modifies vane angle parameters to optimize grain flow and reduce losses while considering power consumption implications, balancing performance improvement with energy efficiency through adaptive parameter optimization.
Data Source
AI summary
A method for controlling crop material speed through a rotor/cage assembly of an agricultural combine. The method includes the steps of monitoring a grain loss of the combine and adjusting an orientation of a vane coupled to the cage responsive to the grain loss, a cleaning system load and/or a straw length.