Angled Disk Opener and Closing Wheel Layout for Seed Trench Control
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Solution Overview
Problem
Conventional seed drills face challenges in penetrating hardened soil, causing soil disturbance and misalignment of seeds due to blowout material, and lack efficient depth control and seed placement.
Innovation Solution
The agricultural device employs a pair of rolling elements with angled disk opener blades and rubber wheels to form a trench for seed placement, capturing blowout material and ensuring accurate depth control, minimizing soil disturbance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a seed drill is used to penetrate hardened soil, then seed placement capability is improved, but soil disturbance and blowout material increase
Solution Approach 1:
The seed drill is divided into separate functional components: disk openers for trench formation, seed meters for precise seed delivery, and closing wheels for trench closure. Each component performs a specific function to minimize overall soil disturbance while maintaining seed placement precision.
Solution Approach 2:
The disk openers are designed with specific angles and configurations to create narrow trenches with minimal blowout. The closing wheels are positioned and angled to gently press soil back into the trench without causing additional disturbance. Each component has optimized local properties to achieve the dual goal of precise seed placement and minimal soil disturbance.
2Force
If downward force is increased to penetrate hardened soil, then penetration capability is improved, but seed depth control and alignment deteriorate
Solution Approach 1:
The seed drill incorporates adjustable components that can be dynamically positioned based on soil conditions. The disk openers can be adjusted in depth and angle, and the closing wheels can be positioned to accommodate varying soil hardness, allowing optimal penetration force to be applied while maintaining depth control.
Solution Approach 2:
The system allows for parameter adjustments including disk opener depth, closing wheel position, and seed meter rate. These parameters can be changed to match different soil conditions, enabling the drill to penetrate hardened soil effectively while maintaining precise seed depth control and alignment.
3Productivity
If conventional seed drill operation is used, then seeding speed is improved, but blowout material causes trench misalignment and destroys formed trenches
Solution Approach 1:
The closing wheels act as intermediaries between the disk openers and the seed trench. They capture and redirect blowout material back into the trench, preventing misalignment and trench destruction while allowing the drill to operate at high speeds without sacrificing precision.
Data Source
AI summary
An agricultural device including a frame, a pair of first rolling elements supported by the frame and configured to form a trench in a soil for planting a seed, and a pair of second rolling elements supported by the frame. The pair of second rolling elements cooperatively engage with the pair of first rolling elements to capture the soil caused by an operation of the pair of first rolling elements. The pair of first rolling elements is at a first angle and the pair of second rolling elements is at a second angle different than the first angle.