L-Shaped Moveable Edge Scaffold for Stable Wall Access
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Solution Overview
Problem
Existing access apparatuses for contractors in walled spaces, such as pools and tanks, are difficult to move and relocate, unstable due to rounded bottoms, and lack ease of secure placement and repositioning for maintenance tasks.
Innovation Solution
A scaffold apparatus with an L-shaped configuration comprising an upper horizontal structure, vertical structures, and a platform, made of welded metal tubing, allowing secure anchoring and easy relocation, with optional ladder integration and adjustable height features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pulley system is used to suspend access apparatus into walled spaces, then access is provided for contractors, but the apparatus becomes difficult to move and relocate
Solution Approach 1:
The scaffold is divided into separable components including vertical members, horizontal members, and platform sections that can be independently assembled and disassembled. This segmentation enables easy relocation by allowing contractors to disassemble and reassemble the scaffold at different locations without requiring complex pulley systems.
Solution Approach 2:
The scaffold incorporates adjustable vertical members with telescopic sections that can be extended or retracted to different heights. This dynamic adjustment capability allows the scaffold to adapt to various walled space depths while maintaining ease of relocation through simple height modifications rather than complete disassembly.
2Reliability
If a ladder is used from the floor of the walled space, then access is provided, but the ladder becomes unsteady due to rounded bottoms
Solution Approach 1:
Instead of placing the scaffold directly on the rounded floor surface, the design extends the platform structure horizontally away from the wall, creating a three-dimensional L-shaped configuration. This dimensional change provides a stable working platform that is not affected by the rounded floor geometry, as the platform extends into the walled space rather than relying on floor contact for stability.
Solution Approach 2:
The scaffold replicates the stability characteristics of traditional ladders by incorporating ladder rungs integrated into the vertical members, while eliminating the instability issue through its structured framework. The ladder rungs are fixed to rigid vertical members rather than relying on floor contact, copying the climbing function while avoiding the rounded-floor stability problem.
3Ease of operation
If the platform structure extends into the walled space providing support surface, then maintenance access is enabled, but the apparatus requires secure anchoring
Solution Approach 1:
The anchoring function is merged with the existing horizontal member structure that already extends along the wall. The horizontal members serve dual purposes: providing structural support for the platform and incorporating attachment interfaces for securing the scaffold to the wall. This integration eliminates the need for separate anchoring systems and simplifies the overall apparatus.
Solution Approach 2:
The attachment interfaces are designed to be self-contained on the horizontal members, with built-in attachment points that can be directly secured to the wall without requiring external anchoring equipment. The scaffold essentially anchors itself through its own structural components, eliminating the need for additional complex anchoring systems.
Data Source
AI summary
A scaffold apparatus has an upper horizontal structure of a first width, a vertical structure having a first and a second vertical member attached each at opposite ends of the first width of the upper horizontal structure, and a platform structure attached at a lowermost point to the vertical structure, extending away from the vertical structure in a direction opposite direction of the upper horizontal structure, such that the scaffold apparatus, viewed in side elevation, forms an L-shape. The upper horizontal structure lies flat on a surface at an upper edge of a walled space and extends the vertical structure downward into the walled space proximate a wall of the walled space, and the platform structure extends from a lower end of the vertical structure into the walled space, providing a support surface for a user to stand upon to perform maintenance on the wall proximate the vertical structure.