Pivotable Guidance Plate for Agricultural Pickup Windguard
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Solution Overview
Problem
Known windguard designs for agricultural machines, particularly those with two rollers, often face issues such as crop material getting stuck or the mat becoming too dense to be handled efficiently by the conveyor, leading to reduced processing efficiency.
Innovation Solution
A windguard assembly with a pivotable guidance plate and a roller, where the guidance plate is adjustable via a controller and stop mechanism to optimize crop flow, and features a roughened surface to prevent material from sticking to the tines, ensuring smooth transfer to the conveyor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a windguard with two rollers is used to guide crop material, then the crop flow path is better defined and crop material is guided more efficiently, but crop material gets stuck between the rollers or the mat becomes too dense to be handled efficiently
Solution Approach 1:
The patent replaces the fixed two-roller windguard with a dynamic system featuring a pivotable guidance plate that can adjust its position and angle in response to varying crop material flow conditions. This dynamic adjustment prevents crop material from getting stuck while maintaining efficient guidance, resolving the contradiction between handling efficiency and flow smoothness.
Solution Approach 2:
The guidance plate's pivotable design allows changing of geometric parameters (position and angle) to adapt to different crop material densities and flow rates. This parameter variation enables the system to maintain optimal performance across different operating conditions without the crop material getting stuck or becoming too dense.
2Device complexity
If a simple deflector is used as a windguard, then the device complexity is reduced, but the crop flow path is less well-defined and crop material guidance is less efficient
Solution Approach 1:
The patent introduces a pivotable guidance plate that adds minimal mechanical complexity while dramatically improving crop material guidance efficiency. The simple pivot mechanism allows the plate to dynamically adapt to crop flow conditions, achieving well-defined crop paths without the complexity of fixed multi-roller systems.
3Device complexity
If the guidance plate is made fixed, then the structure is simpler and more stable, but it cannot adapt to varying crop material flow conditions
Solution Approach 1:
The pivotable guidance plate provides a simple yet effective dynamic mechanism that enables adaptation to varying crop material flow conditions. The single pivot axis design maintains structural simplicity while allowing the plate to adjust its position and angle in response to different crop densities and flow rates.
Solution Approach 2:
The guidance plate's pivotable design allows it to self-adjust to crop material flow conditions without requiring external control systems or complex actuators. The plate naturally responds to the forces exerted by the crop material, maintaining adaptability with minimal mechanical complexity.
Data Source
AI summary
A pickup assembly (10) for an agricultural vehicle (1), in particular a forage harvester or a baler, includes: a frame (200); a pickup drum (210) carried by the frame (200) and carrying a plurality of tines (211); and a windguard assembly (220) carried by the frame (200) and including a roller (221) carried in front of the pickup drum (210) and defining a roller axis (RA). A guidance plate (230) is provided that is pivotable about a pivot axis (PA) that is coaxial with the roller axis (RA).