Single Disk Fertilizer Opener With Parallel Arm Orientation
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Solution Overview
Problem
Conventional single disk fertilizer openers face issues with maintaining the orientation of the boot and fertilizer tube perpendicular to the trench, leading to inconsistent fertilizer depth placement and trench widening, especially on uneven terrain.
Innovation Solution
The design incorporates a second parallel arm that pivots with the first arm, maintaining the boot and fertilizer tube's vertical orientation relative to the soil, along with a wing mechanism that breaks apart soil sidewalls to ensure consistent fertilizer placement and trench formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional single arm design is used, then the device complexity is reduced, but the orientation stability of the boot and fertilizer tube deteriorates on uneven terrain
Solution Approach 1:
The single arm is divided into two separate arms (first arm and second arm) that pivot independently. This segmentation allows each arm to accommodate terrain variations while maintaining the perpendicular orientation of the boot and fertilizer tube, resolving the contradiction between simplicity and stability.
Solution Approach 2:
The arms are designed to pivot dynamically in response to terrain changes. The first arm pivots at a first location and the second arm pivots at a second location, allowing the system to adapt to uneven ground while maintaining consistent fertilizer placement depth and orientation.
2Device complexity
If the boot and fertilizer tube orientation is not maintained perpendicular to the trench, then the device complexity is reduced, but the manufacturing precision of fertilizer depth placement deteriorates
Solution Approach 1:
By segmenting the support structure into two independently pivoting arms, the system maintains the boot and fertilizer tube perpendicular to the trench without requiring complex orientation control mechanisms, thus preserving manufacturing precision while avoiding excessive complexity.
Solution Approach 2:
The two-arm linkage system acts as an intermediary mechanism that automatically maintains the perpendicular orientation of the boot and fertilizer tube relative to the trench, ensuring consistent fertilizer depth placement without requiring active control systems.
3Stability of the object's composition
If downforce is increased to maintain trench formation on uneven terrain, then the orientation stability is improved, but the force required increases
Solution Approach 1:
The dynamic pivoting capability of the two arms allows the system to maintain orientation stability by adapting to terrain variations rather than relying solely on increased downforce, thereby reducing the overall force requirement while maintaining stability.
Solution Approach 2:
Segmenting the support into two independently pivoting arms distributes the force requirements and allows each arm to independently accommodate terrain variations, maintaining stability without requiring excessive downforce from the entire system.
Data Source
AI summary
A single disk fertilizer opener assembly for opening a trench in soil includes a frame support and a cutting disk for forming the trench. The cutting disk is coupled to an axle and rotates about the axle as the assembly moves in a working direction. The assembly also includes a first arm pivotally coupled to the frame support and the axle, and a second arm pivotally coupled to the frame support at a location spaced from the first arm. A bracket is coupled to the axle and the second arm, and a scraper is coupled to the bracket and disposed substantially perpendicularly to the working direction.