Lightweight Scaffold Plank with Honeycomb Core and Sensor Integration
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Solution Overview
Problem
Scaffolding workers face excessive burden when assembling scaffolds due to the weight and manual handling of components, despite the use of lightweight materials, and there is a need to monitor the load and aging conditions of scaffolding planks to prevent defects.
Innovation Solution
A lightweight scaffolding plank designed as a multi-layer system with a honeycomb or foam core, equipped with UV sensors, fiber-reinforced plastic head fittings, and strain sensors, integrated with metal or plastic structural elements for enhanced stability and load distribution, and NFC/RFID for data recording and identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional scaffolding materials and constructions are used, then load-bearing capacity and robustness are ensured, but the weight and handling burden on workers increase
Solution Approach 1:
The scaffolding plank employs a composite sandwich structure combining aluminum alloy profiles (6060 or 6082) with a polyurethane foam core (density 30-50 kg/m³). This composite construction achieves optimal balance between weight reduction and mechanical strength, allowing the plank to meet load-bearing requirements while significantly reducing handling weight for workers.
Solution Approach 2:
The aluminum alloy profiles are strategically positioned at the top and bottom surfaces of the plank where bending stresses are highest, while the lightweight foam core fills the interior space. This local optimization of material placement ensures structural strength at critical locations while maintaining overall lightweight construction.
2Ease of operation
If scaffolding planks are made lightweight using materials like aluminum, then handling burden is reduced, but stability and robustness may be compromised
Solution Approach 1:
The combination of aluminum alloy profiles with rigid polyurethane foam core creates a structurally stable composite beam. The aluminum profiles provide tensile and compressive strength while the foam core provides shear resistance and dimensional stability, achieving both lightweight handling and structural robustness.
Solution Approach 2:
The aluminum profiles are extruded with optimized curved cross-sections featuring rounded corners and specific geometric profiles. These curved shapes increase the moment of inertia and bending resistance, enhancing structural stability while maintaining lightweight construction.
3Reliability
If sensors are added to monitor load and aging conditions, then safety and lifespan are improved, but device complexity increases
Solution Approach 1:
The scaffolding plank incorporates strain sensors and UV sensors that automatically monitor load conditions and aging exposure without requiring external monitoring systems. The sensors provide self-diagnostic capability, automatically detecting when the plank approaches its load limit or when UV exposure indicates potential material degradation, thereby enhancing safety while maintaining relatively simple integration.
Data Source
Figure 1~2
Figure 3
AI summary
comprising a scaffold plank, a walking platform and at least two end fittings, wherein the walking platform accommodates the end fittings on its end face, the walking platform being constructed as a multi-layer system of at least three layers, and the walking platform comprising a lightweight core layer, in particular made of a thermoplastic or thermosetting honeycomb material or a foam, as well as a top chord as a cover layer on a top side of the core layer and a bottom chord as a cover layer below the core layer.