Escalator Step Plug-in Assembly for Transport Efficiency
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Solution Overview
Problem
The production of escalator steps using complex and expensive molds for cast or diecast aluminum requires laborious tempering to prevent cavitation, leading to transportation challenges due to their large volume and small mass, making it difficult to transport multiple steps efficiently.
Innovation Solution
The escalator step is designed as a single-piece tread body with an L-shaped cross section, featuring plug-in connections between the tread body, side cheeks, and supporting profile, allowing for disassembly and reassembly, which enhances stability and facilitates efficient transportation by reducing play in connections and allowing for automated assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If escalator steps are made as single-piece cast or diecast aluminum components, then manufacturing precision and structural integrity are improved, but transportation efficiency deteriorates due to large volume and small mass
Solution Approach 1:
The escalator step is divided into multiple separate components including a tread body, side cheeks, and supporting profiles that can be manufactured independently and then assembled through plug-in connections. This segmentation reduces the volume of individual parts for transportation while maintaining the structural integrity of the complete assembly.
2Manufacturing precision
If complex molds are used for cast or diecast aluminum escalator steps, then manufacturing precision is improved, but device complexity and cost increase
Solution Approach 1:
Instead of using a single complex mold for the entire escalator step, the design segments the step into multiple simpler components that can be manufactured using less complex molding processes. Each component has a simpler geometry that is easier to mold, reducing mold complexity and cost.
Solution Approach 2:
Multiple separately manufactured components are combined through plug-in connections to form the complete escalator step assembly. This merging of simpler parts achieves the functional equivalent of a complex single-piece component without requiring complex molds.
3Weight of moving object
If thin-walled and support-structured step skeletons are used, then weight is reduced, but stability deteriorates due to large volume and small mass
Solution Approach 1:
The step is segmented into discrete components that can be efficiently packed and secured during transportation. The modular nature allows for stable stacking and arrangement in transport containers, improving transportation stability despite the lightweight construction.
Solution Approach 2:
The combination of thin-walled structures with supporting profiles creates a composite lightweight structure that maintains stability. The supporting profiles provide structural reinforcement while keeping the overall mass low, achieving both weight reduction and transportation stability.
Data Source
AI summary
The application relates to an escalator step that includes a single-piece tread body, two side cheeks, and at least one supporting profile, which are all formed as plug-in parts and comprise plug-in connections. Owing to this division into plug-in parts, the escalator steps can be transported more effectively in disassembled form and put together in a very simple manner at the assembly site.