Vehicle Grit Distribution Device for Even Field Coverage
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Solution Overview
Problem
Combine harvesters face challenges in evenly distributing grit over the field, particularly when dealing with residual strips of varying widths, leading to uneven distribution and potential contamination of neighboring areas.
Innovation Solution
A vehicle with a pick-up device and distribution system that includes a detection means to monitor the distribution of crops across the width of the receiving device, allowing the control unit to adjust the position of the grit strip based on detected inequalities, ensuring even distribution and alignment with crop edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the distribution device operates with fixed parameters to maintain stability, then the operational simplicity is improved, but the adaptability to varying residual strip widths deteriorates
Solution Approach 1:
The distribution device parameters are made dynamically adjustable during operation. The control unit automatically modifies distribution parameters such as throwing angle, throwing distance, and strip width based on real-time detection of residual strip characteristics, enabling the system to adapt to varying conditions without manual intervention.
Solution Approach 2:
A detection device continuously monitors the actual distribution quality and residual strip characteristics, providing feedback signals to the control unit. This closed-loop control system automatically adjusts distribution parameters to maintain optimal performance across varying field conditions.
2Manufacturing precision
If manual adjustment of distribution parameters is required to adapt to remaining strip width, then the distribution precision is improved, but the loss of time increases
Solution Approach 1:
The system performs self-adjustment through automated detection and control. The detection device identifies residual strip characteristics, and the control unit automatically calculates and applies the appropriate distribution parameters without requiring driver intervention, eliminating time loss while maintaining precision.
Solution Approach 2:
Manual mechanical adjustment of distribution parameters is replaced by an automated electronic control system. The control unit processes detection signals and actuates distribution device components electronically, substituting manual operation with automated control to eliminate adjustment time.
3Area of stationary object
If the strip of grit is widened to cover the remaining strip, then the coverage is improved, but the harmful factors increase due to contamination of neighboring areas
Solution Approach 1:
The distribution device creates locally optimized grit strips with parameters tailored to each specific residual strip section. By adjusting throwing angle, distance, and intensity locally based on detected strip width and position, the system achieves precise coverage without excessive spreading into neighboring areas.
Solution Approach 2:
The system dynamically changes distribution parameters including strip width, throwing angle, and ejection velocity based on real-time detection of residual strip characteristics. This parameter adaptation ensures the grit strip matches the residual strip dimensions exactly, providing complete coverage while preventing contamination of adjacent areas.
Data Source
Figure 1
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Figure 4~5
AI summary
In a vehicle with a receiving device (3) for harvested crops and a distribution device (4) for distributing a spreading material separated from the harvested crops during travel in the form of a spreading material strip (54) behind the vehicle, the distribution device (4) is controllable to vary the position of the spreading material strip (54) transversely to the direction of travel, a detection means is provided to detect the distribution of the harvested crops (9) over the width of the receiving device (3), and a control unit is provided to control the position of the spreading material strip (54) based on the detected distribution.