Agricultural Machine Conveying Channel Wall Dynamics
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Solution Overview
Problem
Agricultural machines face issues with blockages or choppers due to fluctuating crop material volumes, where increased material flow can cause clogging and reduced material flow leads to insufficient cutting, and existing solutions either fail to prevent these issues or compromise cutting quality.
Innovation Solution
The conveying channel wall is movably suspended in a linearly displaceable manner to uniformly adjust the channel cross-section along the conveying direction, preventing tilting or pivoting movements and allowing for a consistent gap change, and the cutting blades can be independently moved to coordinate with the channel wall's movement to maintain optimal cutting quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conveying channel wall is moved away from the conveying rotor to enlarge the cross section, then blockages are prevented, but cutting quality deteriorates
Solution Approach 1:
The conveying channel wall is designed to be movable rather than fixed, allowing it to dynamically adjust its position relative to the conveying rotor. This enables the system to adapt to varying material flow conditions - moving away to prevent blockages during high flow, and moving closer to maintain cutting quality during low flow conditions.
Solution Approach 2:
The system changes the geometric parameter of the conveying channel cross-section by moving the conveying channel wall. This parameter change allows the channel to expand when material flow increases to prevent blockages, and contract when material flow decreases to maintain cutting effectiveness.
2Manufacturing precision
If the conveying channel wall is fixed, then cutting quality is maintained, but blockages occur during high material flow
Solution Approach 1:
The conveying channel wall transitions from a fixed structure to a dynamic one that can respond to material flow conditions. This allows the system to maintain cutting quality under normal conditions while automatically adjusting to prevent blockages during high material flow events.
3Reliability
If the conveying channel wall pivots away from the conveying rotor, then material flow path is enlarged, but choppers continue to occur in the inlet area
Solution Approach 1:
The conveying channel wall is designed with linear displacement capability that allows controlled movement away from the conveying rotor. This dynamic adjustment enlarges the material flow path to prevent choppers in the inlet area while maintaining proper positioning to avoid blockages downstream.
Data Source
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AI summary
The present invention relates to an agricultural machine with a crop picker (1) for picking up crops from the ground and a conveying rotor (3) for conveying the picked-up crops through a conveying channel (4), wherein the conveying channel (4) is bounded by a movable conveying channel wall (5) such that the conveying channel cross-section changes when the conveying channel wall (5) is moved. It is proposed to movably suspend the conveying channel wall (5) such that the conveying channel cross-section increases or decreases uniformly along the conveying direction when the conveying channel wall is moved away from or towards the conveying rotor (3).