Flex Rake Chain Link Structure for Two-Way Load-Bearing Flex
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Solution Overview
Problem
Conventional chain links lack flexibility in both directions, particularly when a load is applied, limiting their effectiveness in load-bearing applications such as water management equipment.
Innovation Solution
The development of novel chain links featuring a unitary metal bar configuration with a clevis, tang opening, and integrally mounted prow, allowing for two-way flexibility and utilizing a polyurethane plug as a load-bearing spring to enable up to four degrees of flex past parallel, enhancing load-bearing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional chain links are used, then structural simplicity is maintained, but flexibility in both directions is lost
Solution Approach 1:
The chain link is divided into distinct functional segments: a rigid body portion for structural integrity, a clevis portion with openings for articulation, and a prow portion for engagement. This segmentation allows each part to perform its specific function while collectively providing two-way flexibility.
Solution Approach 2:
The chain link incorporates dynamic elements including a replaceable spring member that can flex in two directions, and a polyurethane plug that acts as a load-bearing spring. These dynamic components enable the link to adapt its flexibility based on loading conditions, providing unrestricted flex in one direction and controlled flex in the other.
2Strength
If conventional rigid chain links are used, then manufacturing simplicity is maintained, but load-bearing capacity under flexing is reduced
Solution Approach 1:
The chain link employs composite construction combining a rigid body portion made of metal bar stock with a polyurethane plug insert. The polyurethane material provides elastic load-bearing capability while the metal portions provide structural strength. This composite approach enhances load-bearing capacity under flexing conditions while maintaining manufacturability through standard fabrication processes.
Solution Approach 2:
The polyurethane plug serves as an intermediary element between the metal chain link components. It acts as a load-bearing spring that mediates the interaction between linked components, absorbing and distributing loads while allowing controlled flexion. This intermediary element enhances the overall load-bearing capacity without requiring complex metal fabrication.
3Adaptability or versatility
If chain links are made flexible in both directions, then adaptability is improved, but structural stability is reduced
Solution Approach 1:
Different portions of the chain link have different mechanical properties optimized for their specific functions. The rigid body portion maintains structural stability, while the clevis and prow portions provide articulation and flexibility. The replaceable spring member and polyurethane plug provide controlled flexibility in specific directions while maintaining overall structural integrity through their load-bearing capabilities.
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 novel chain links provide enhanced flexibility and load-bearing capacity, allowing unrestricted flex in one direction and controlled flex in another, improving the performance of chains in water management equipment.
Implementation Method 1
with a load applied, they will flex up to four degrees past a parallel using a plug as a load bearing spring
Data Source
AI summary
Novel chain links that are used in combination with essentially identical chain links to form a chain that is useful in flex rake apparati for use in cleaning water streams.