Elastically Compressible Stalk Gap Rails for Kernel Retention
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Solution Overview
Problem
Existing grain harvesting technologies suffer from crop yield loss due to kernels being dislodged from their carriers during the harvesting process, despite the use of rail systems and cushioning devices, which often require costly modifications to the harvester row units.
Innovation Solution
The implementation of elastically compressible stalk gap rails made from high-wear-resistant polymers, such as ultra-high molecular weight polyethylene or nylon, mounted along the deck plates of the harvester row units, which absorb the impact of kernel carriers and prevent kernels from falling through the stalk gap, using a ramped design and flexible structures to minimize kernel dislodgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional rigid rails are used along the deck plates, then kernels are prevented from falling through the stalk gap, but kernel dislodgment increases due to impact
Solution Approach 1:
The patent changes the physical parameter of the rail material from rigid to elastically compressible. The rails are made of resilient material that can deform elastically under impact, absorbing the force of kernel carriers while preventing kernels from falling through the stalk gap, thus resolving the contradiction between kernel retention and preventing kernel dislodgment
Solution Approach 2:
The elastically compressible rails provide beforehand cushioning by being pre-positioned along the deck plates adjacent to the stalk gap. When kernel carriers impact the rails, the elastic material absorbs the impact energy before it can cause kernel dislodgment, preventing the harmful effect before it occurs
2Loss of substance
If cushioning devices are added to reduce kernel dislodgment, then kernel retention improves, but device complexity and cost increase
Solution Approach 1:
The elastically compressible rails serve multiple functions simultaneously: they prevent kernels from falling through the stalk gap, cushion impact to reduce kernel dislodgment, and are easily installable on existing row units. This multi-functionality improves kernel retention without significantly increasing device complexity
Solution Approach 2:
The rails are made from cost-effective resilient materials such as rubber or plastic that can be easily manufactured and replaced if needed. This approach provides effective cushioning at low cost, avoiding the need for expensive complex cushioning systems
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 solution effectively reduces kernel dislodgment and crop yield loss by cushioning the impact of kernel carriers, while being cost-efficient and easily integratable into existing row units, enhancing the harvesting efficiency without significant modifications.
Implementation Method 1
one or more elastically compressible stalk gap rails can be mounted to the first and second deck plates adjacent to and extending along the first and second stripping edges
Data Source
AI summary
A harvester row unit comprises first and second deck plates having first and second stripping edges which are facing and spaced apart for defining a stalk gap therebetween, first and second gathering chains extending over the first and second deck plates and comprising a plurality of sweeping lugs which traverse adjacent to and along the stalk gap, and one or more elastically compressible stalk gap rails mounted to the first and second deck plates adjacent to and extending along the first and second stripping edges. The stalk gap rails include a ramped leading end and a trailing end, and the sweeping lugs climb up the ramped leading end, traverse across the stalk gap rails, and climb down the trailing end, and/or include support pads and pockets between adjacent support pads defining one or more flexible walls which deform when impacted by kernel carriers.