Windrow Chute Roller for Residue Accumulation
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Solution Overview
Problem
Existing windrow assemblies for agricultural vehicles are prone to material accumulation at the leading edge, disrupting the harvesting process due to wind and residue flow imbalances.
Innovation Solution
A windrow assembly with a roller forming an active leading edge that moves crop material from the leading edge to the trailing edge, optionally equipped with blades for self-rotation and beater rods to break up accumulated residue, reducing material accumulation and improving operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the leading edge is properly spaced to protect windrowed residue from wind and catch straw, then residue protection is improved, but crop residue accumulates on the leading edge
Solution Approach 1:
The patent applies the dynamics principle by replacing the static leading edge with a rotating roller. The roller rotates to actively move crop residue from the leading edge toward the trailing edge, preventing accumulation while maintaining proper spacing for residue protection. This dynamic solution allows the leading edge to adapt continuously to incoming residue flow.
Solution Approach 2:
The roller is designed to be self-rotating through the natural flow of crop residue and wind forces, without requiring external power sources. The residue flow itself drives the roller rotation, which in turn prevents accumulation - creating a self-service system where the problem (residue flow) becomes the solution (roller rotation).
2Productivity
If the leading edge is positioned to catch chaff from cleaning system, then chaff collection is improved, but material accumulation disrupts operation
Solution Approach 1:
The rotating roller dynamically manages material flow at the leading edge, continuously clearing accumulated residue and chaff while maintaining collection efficiency. The rotation ensures that materials are continuously moved along the chute rather than building up and blocking flow, preventing operational disruptions.
3Reliability
If a roller is added to form an active leading edge, then material accumulation is reduced, but device complexity increases
Solution Approach 1:
The roller is designed to rotate automatically using the kinetic energy from incoming crop residue and wind forces, eliminating the need for motors, sensors, or control systems. This self-service approach maintains reliability improvement while minimizing the increase in device complexity.
Solution Approach 2:
The roller design recovers the kinetic energy already present in the crop residue flow and wind to drive its rotation, rather than requiring additional energy input. This converts the existing energy in the system into useful rotational motion for clearing materials.
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 active leading edge discourages crop residue accumulation, allowing for smoother operation and reducing the need for additional power to rotate the roller, enhancing the harvesting process by preventing material buildup and ensuring continuous operation.
Implementation Method 1
a roller associated with the leading edge to form an active leading edge of the windrow chute during rotation. The roller is arranged adjacent to the leading edge such that, during operation of the vehicle, rotation of the roller moves crop material from near the leading edge and toward the trailing edge
Data Source
Figure 1
Figure 2
Figure 2A
AI summary
An agricultural vehicle (100) includes: a chassis (101); a header (110) carried by the chassis (101) and configured to cut crop material; a chopper (180) carried by the chassis (101) downstream of the header (110); and a windrow assembly (200, 200', 200") carried by the chassis (101) downstream of the chopper (180), the windrow assembly (200, 200', 200") including a windrow chute (210) defining a leading edge (211) downstream from the chopper (180) and a trailing edge (212) downstream from the leading edge (211). The agricultural vehicle (100) is characterized by a roller (220) associated with the leading edge (211) to form an active leading edge (211) of the windrow chute (210) during rotation.