Scaffolding Standard with Segmented Projection for Ledger Alignment
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Solution Overview
Problem
Existing scaffolding systems face challenges in quick and safe erection due to complex coupling constructions that require skill and time, with ledgers often falling and causing injuries during assembly.
Innovation Solution
The scaffolding system features a standard with an elongate tubular wall and radially protruding supporting projections that form an annular surface with alternating elevations and depressions, guiding ledger extremities into secure positions using gravity, and optional keeper projections for enhanced safety and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional coupling constructions with ring flanges, couplings, and wedge members are used, then the scaffolding system can be assembled, but the assembly process is time-consuming and requires skill
Solution Approach 1:
The supporting projection is segmented into multiple functional zones: an annular supporting surface with alternating elevations and depressions for positioning, and a separate keeper projection for retention. This segmentation allows each zone to perform its specific function independently, simplifying the overall coupling construction while maintaining assembly speed and precision.
2Reliability
If traditional coupling constructions are used, then the ledger can be connected to the standard, but the ledger may shift and fall during assembly causing injury
Solution Approach 1:
The keeper projection is designed to engage with the coupling before the ledger is fully positioned, performing the retention function in advance. This preliminary action secures the ledger to the standard early in the assembly process, preventing shifts and falls during subsequent positioning operations, thereby improving safety without increasing handling difficulty.
3Ease of operation
If the ledger is loosely supported on ring flanges during assembly, then the ledger can be positioned, but the opposite end may shift and fall off
Solution Approach 1:
The supporting projection merges two previously separate functions into a single integrated component: the annular supporting surface provides positioning support while the keeper projection provides retention. This merging ensures that both ends of the ledger are simultaneously supported and secured, preventing the opposite end from shifting or falling during assembly, thereby maintaining both positioning ease and stability.
4Manufacturing precision
If the scaffold builder has to jiggle the ledger to align openings with cut-outs, then the desired alignment can be achieved, but the process is time-consuming and requires skill
Solution Approach 1:
The annular supporting surface with alternating elevations and depressions is designed to automatically guide the ledger into the correct alignment position through gravity and geometric constraints. The ledger self-aligns with the supporting projection without requiring the builder to jiggle or manually adjust it, achieving precise alignment instantly while eliminating the time-consuming and skill-dependent jiggling process.
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
Facilitates quicker and safer assembly by allowing ledgers to be easily aligned and secured without jiggling, reducing the risk of injury and improving handling and disassembly ease.
Implementation Method 1
it may be guided by gravity, over the supporting surface, towards the nearest depression
Data Source
AI summary
A standard (10) of a scaffolding system (1), comprising an elongate tubular wall (12), having a central longitudinal axis (Ls), and at least one supporting projection (14) that protrudes radially outwardly from said tubular wall (12). When the standard (10) is in a vertical orientation, the supporting projection (14), seen in a tangential direction (Ts) relative to the longitudinal axis (Ls), forms an annular supporting surface (16) that encircles the tubular wall (12) and that defines alternating elevations (18) and depressions (20). Also disclosed is a ledger (30) with ledger couplings (40) configured for cooperation with said standard (10).