Fertilizer Distributor Disc Resilient Bending Bar Oscillation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fertilizer distributor devices in agricultural machines are limited by rigid preload springs that restrict the adaptability of the disc to ground irregularities, preventing large excursions and effective fertilizer distribution.
Innovation Solution
The use of a resilient bending bar and a hinge system that allows vertical oscillation of the disc, combined with a chain for limiting oscillation and a preload spring for damping, enhances adaptability to ground variations while maintaining controlled movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rigid preload springs are used to maintain the disc pressed against the ground, then the disc is kept in contact with the ground for groove formation, but the disc cannot perform large excursions to follow ground irregularities
Solution Approach 1:
The patent changes the mechanical parameter of the spring from rigid to resilient, transforming it from a rigid preload spring to a resilient bending bar. This parameter change allows the spring to provide both the necessary contact force and the flexibility to follow ground irregularities, resolving the contradiction between maintaining reliable contact and adapting to varying terrain.
Solution Approach 2:
The patent employs a composite support structure combining a resilient bending bar with an oscillating arm mechanism. This composite system integrates the force-providing function of the spring with the motion-providing function of the oscillating arm, enabling both reliable ground contact and large excursions to follow ground profile variations.
2Adaptability or versatility
If the disc is allowed to oscillate freely to follow ground profile, then adaptability to ground irregularities is improved, but uncontrolled oscillation occurs
Solution Approach 1:
The oscillating arm mechanism provides a feedback-controlled oscillation system where the arm's movement is constrained by its pivot point and return mechanism. This creates a controlled feedback loop that allows the disc to follow ground profile variations while automatically returning to its neutral position, preventing uncontrolled oscillation.
Solution Approach 2:
The patent transforms the static rigid spring system into a dynamic oscillating system. The oscillating arm can move dynamically to accommodate ground irregularities while the pivot mechanism and resilient bar provide dynamic restraint, allowing controlled motion rather than fixed positioning or uncontrolled oscillation.
3Adaptability or versatility
If a complex oscillating mechanism is used to enable large disc excursions, then ground adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments the support function into two independent components: the resilient bending bar provides the force and the oscillating arm provides the motion. This segmentation allows each component to be simple in design while their combination achieves the complex function of following ground profile, reducing overall system complexity compared to a single complex mechanism.
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
This configuration enables the disc to follow significant ground profile variations without uncontrolled movement, ensuring effective fertilizer distribution and adaptability, while being economical and easy to manufacture.
Implementation Method 1
the resilient organ is a bending bar
Implementation Method 2
the disc is maintained pressed against the ground for realisation of a groove
Data Source
AI summary
An agricultural machine (10) comprising a bearing frame (11) and a plurality of fertilizer distributor devices (20), comprising at least a fertilizer distributor (21) associated to a disc (22), where the distributor devices (20) are supported by a mounting (25) associated to the bearing frame (11) by a resilient organ (27), the resilient organ (27) being a bending bar.