Adjustable Fan Blade Position in Agricultural Harvester Extractor
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Solution Overview
Problem
Agricultural harvesters face inefficiencies in separating debris from crops, particularly in sugarcane harvesters, where debris such as dust, dirt, and leaves are not effectively removed from sugarcane billets, leading to suboptimal processing and storage outcomes.
Innovation Solution
An extractor system with a fan assembly and actuator, controlled by a computing system and sensor data, adjusts the position of fan blades within a hood to optimize suction force and debris separation, ensuring efficient removal of debris from sugarcane billets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed fan blade position is used in the extractor, then the structure is simple and easy to manufacture, but the debris separation efficiency is insufficient
Solution Approach 1:
The fan blade position is made adjustable through an actuator mechanism that allows the blade to move between multiple predefined positions. This dynamic adjustment capability enables optimization of debris separation efficiency under varying operating conditions while maintaining a relatively simple overall structure. The actuator system provides controlled movement without requiring complex reconfiguration of the entire extractor assembly.
2Productivity
If the fan blade position is manually adjusted, then the structure remains simple, but the operational efficiency and response time are reduced
Solution Approach 1:
A sensor system continuously monitors operating parameters such as debris flow rate, suction effectiveness, and fan performance. The computing system processes this feedback data and automatically actuates the fan blade position adjustment mechanism to optimize performance. This closed-loop control eliminates manual intervention, improves response time, and maintains high operational efficiency through automated adaptation to changing conditions.
3Adaptability or versatility
If multiple fan blade positions are implemented, then the adaptability to different operating conditions improves, but the device complexity increases
Solution Approach 1:
The fan blade position adjustment mechanism is segmented into discrete predefined positions rather than requiring continuous or arbitrary adjustment. This segmentation approach provides sufficient adaptability to different operating conditions through a finite set of optimized positions, while keeping the control mechanism simpler. Each position corresponds to specific operating scenarios, making the system versatile without requiring complex continuous control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enhances operational efficiency by improving debris separation and cleaning, reducing material loss and equipment wear, while maintaining effective airflow and suction force, thereby improving the overall harvesting process.
Implementation Method 1
a fan assembly positioned at least partially within the hood and configured to generate a suction force to force the debris through the extractor
Data Source
AI summary
A system for an agricultural harvester includes an extractor configured to separate debris from a crop and expel the debris therefrom. The extractor can include a hood and a fan assembly positioned at least partially within the hood and configured to generate a suction force to force the debris through the extractor. The fan assembly includes a fan blade. An actuator is configured to alter a position of the fan blade relative to an upper portion of the hood. A sensor system is configured to generate data indicative of one or more operating parameters or conditions of the extractor. A computing system is communicatively coupled to the sensor system and the actuator. The computing system being configured to receive the data from the sensor system and determine a defined position of the fan blades relative to the hood based at least in part on the data from the sensor system.