Self-Supporting Plate Chain with Ratchet Mechanism
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Solution Overview
Problem
Engineering chains used for transporting organic materials face challenges due to high humidity and impurities, leading to wear and increased maintenance costs, and existing solutions either lack self-supporting mechanisms or include unnecessary outboard wheels, which increase costs and complexity.
Innovation Solution
A self-supporting plate chain mechanism with external and internal pitch, featuring a ratchet mechanism between pitches, allowing the chain to rotate internally without external interference, and using high creep limit materials to reduce the need for outboard wheels, thereby minimizing catenaries and maintaining performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If outboard wheels are installed in each link of the chain, then the chain can be guided by rails and support great loads, but the number of moving parts increases, leading to higher production costs, maintenance costs, equipment weight, and energy consumption
Solution Approach 1:
The chain is divided into modular links with standardized components. Each link plate is a separate module that can be manufactured independently and assembled systematically, allowing for reduced complexity in each individual module while maintaining overall system strength through the modular architecture.
Solution Approach 2:
The outboard wheel mechanism is extracted from every link and selectively removed from intermediate links, retaining wheels only at critical positions (every 2-3 links). This extraction reduces the total number of moving parts and simplifies the chain structure while maintaining load support capacity through strategic placement of remaining wheels.
2Ease of operation
If outboard wheels are used in each link, then the chain can be guided by rails, but this increases production costs and maintenance requirements
Solution Approach 1:
Instead of providing outboard wheels in every link (excessive action), the invention uses partial action by installing wheels only in selected links (every 2-3 links). This partial implementation is sufficient to maintain effective rail guidance while significantly reducing the number of wheels required, thereby lowering production costs and maintenance requirements.
3Productivity
If traditional chain mechanisms are used, then the chain can transport materials, but the chain experiences increased catenaries and requires more support wheels
Solution Approach 1:
The chain incorporates a self-supporting mechanism where the link plates and connecting pins create inherent structural support between wheel locations. This self-service capability allows the chain to resist catenary formation through its own structural geometry and material properties, reducing dependence on frequent wheel support and improving stability without sacrificing transport capability.
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 solution reduces production and maintenance costs, decreases equipment weight and energy consumption by eliminating outboard wheels every two or three steps, while maintaining resistance and useful life, and simplifies manufacturing and maintenance processes.
Implementation Method 1
a ratchet mechanism between the pitches, making the chain self-supporting and allowing it to only rotate in the internal direction when it has direct interaction with the sprocket
Implementation Method 2
With the implementation of this self-supporting mechanism and the use of materials with high creep limits, it is possible to eliminate the support wheel every two or three steps
Data Source
AI summary
The technical field of engineering chains, specifically chains for the transport of raw material is provided, which purpose is to reduce the number of moving parts usually used in engineering chains with outboard wheels, without sacrificing optimal performance. To this end, it provides a straight plate chain mechanism with external and internal pitch, with a ratchet mechanism between the pitches, making the chain self-supporting and allowing it to only rotate in the internal direction when it has direct interaction with the sprocket, thus considerably reducing the possible catenaries.