Leading Railing Barb for Advance Scaffold Installation
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Solution Overview
Problem
Existing scaffolding railings cannot be installed before the new working level is completed, specifically between 2.5 m and 3.5 m above the secured working level, posing a safety risk and limiting flexibility in setup.
Innovation Solution
A railing element with a tubular central section, a connecting means, and a backward-facing hook (barb) design allows for easy installation from below, forming a stable connection without additional securing elements, and enabling flexible assembly by pivoting and hooking onto rosette discs of vertical posts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a traditional hook element is used to suspend railings from vertical posts, then the railing can be installed on completed working levels, but the railing cannot be installed in advance before the new working level is completed
Solution Approach 1:
The hook element is inverted to create a barb that projects perpendicular to the longitudinal direction of the railing and hooks into the vertical post from the front rather than suspending from above. This allows workers to install the railing by hooking the barb into the post while standing on the lower completed level, enabling advance installation before the new working level is completed
2Reliability
If additional securing elements like wedge elements are used to prevent accidental lifting, then the connection stability is improved, but the device complexity and installation time increase
Solution Approach 1:
The barb element is designed with a specific geometry where the rearward-directed hook section creates friction and mechanical interference with the receiving opening in the vertical post. This self-securing mechanism prevents accidental lifting without requiring additional wedge elements or complex fastening devices, reducing both component count and installation complexity
Data Source
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AI summary
Railing element 3 with a tubular central section 4, a connecting means attached to a first end region 5 of the tubular central section 4, and a hook attached to a second end region 12 of the tubular central section 4, wherein the hook is designed as a barb 13 with a backward-facing hook section 16 in a straight extension of the tubular central section 4.