Mobile Scaffold Double Guardrail Assembly Against Unauthorized Removal
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Solution Overview
Problem
Existing mobile scaffolds face challenges in assembly and disassembly complexity, stability, and safety due to the removable nature of side guardrails, which can be accidentally or intentionally dismantled, posing a significant risk to individuals.
Innovation Solution
A mobile scaffold design featuring a side protection double railing system with upper and lower struts that are securely fastened to vertical ladders using U-shaped or J-shaped suspension claws, ensuring the railing cannot be dismantled without disassembling the ladders, and incorporating locking mechanisms to enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If simple side guard rails consisting of single scaffold struts are used, then assembly is easier and faster, but safety is compromised because they can be accidentally or intentionally removed
Solution Approach 1:
The patent combines multiple scaffold struts into a single integrated side protection double railing assembly that includes both an upper strut and a lower strut connected by connecting struts. This merging of components creates a unified structure that cannot be removed without disassembling the entire assembly, thereby maintaining safety while preserving ease of installation through the integrated design.
Solution Approach 2:
The side protection double railing is designed to be pre-assembled as a complete unit with all struts and connecting elements in place before installation on the scaffold. This preliminary assembly ensures that the protective structure is complete and cannot be partially removed, while still allowing quick installation on the scaffold structure.
2Productivity
If side guard rails are made removable for easy assembly and disassembly, then productivity increases, but stability and safety decrease due to unauthorized dismantling
Solution Approach 1:
Multiple struts are merged into a single assembled unit where the upper strut, lower strut, and connecting struts form an integrated structure. This merging maintains structural stability because the entire assembly must be removed together, while still allowing rapid installation as a complete unit on the scaffold.
Solution Approach 2:
The complete side protection structure is pre-assembled with all necessary struts and connections in place before installation. This preliminary action ensures structural integrity is maintained while enabling quick installation and removal as a single operational unit, thus preserving both stability and productivity.
3Reliability
If additional knee rails are installed separately to enhance protection, then safety improves, but device complexity and assembly time increase
Solution Approach 1:
The upper strut serving as the handrail and the lower strut serving as the knee rail are merged into a single side protection double railing assembly. This integration provides enhanced protection with both handrail and knee rail functionality while reducing device complexity compared to installing separate rail systems, as the entire protective structure is assembled as one unit.
4Reliability
If locking mechanisms are added to prevent unauthorized removal, then safety improves, but ease of operation and assembly difficulty increase
Solution Approach 1:
The locking security is achieved by merging multiple struts into a single assembled unit that functions as an integrated structure. The security against unauthorized removal comes from the fact that the entire assembly must be disassembled together, not from additional locking mechanisms on individual components. This approach maintains ease of operation by avoiding complex locking systems while still providing reliable security.
Data Source
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Figure 2
Figure 3.1~3.2
AI summary
The invention relates to a scaffold (10), in particular a mobile scaffold, which is constructed with at least two vertical ladders (13.1, 13.2), with at least one horizontal scaffold floor (17.2, 17.3), and with at least one advanced side protection double guardrail (11) for protecting persons against falling from the scaffold floor (17.2, 17.3). The at least one side protection double guardrail (11) cannot be dismantled without dismantling the first ladder (13.1) or the second ladder (13.2).