Cable Safety Fence Noise Panel Mounting
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Solution Overview
Problem
Existing cable road safety fences lack noise reducing capabilities and are prone to disintegration upon vehicle impact, posing a risk of severe injuries from flying objects and sharp fractures.
Innovation Solution
Integration of noise absorbing panels with energy absorbing materials, such as mineral wool fibre boards encased in stretch metal netting, mounted at different levels on the cables to absorb energy and prevent disintegration during collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If noise absorbing panels are added to cable safety fences, then noise reduction capability is improved, but structural complexity increases
Solution Approach 1:
The patent combines noise absorption function with the existing cable safety fence structure by mounting panels directly onto the cables. This merging approach adds noise reduction capability while utilizing the existing structural framework, thereby limiting the increase in overall system complexity
Solution Approach 2:
The cable safety fence structure is enhanced to serve multiple functions: it maintains its original safety barrier function while simultaneously providing noise reduction through the attached panels. This multi-functionality approach allows one structure to address both safety and noise concerns
2Object-affected harmful factors
If noise absorbing panels are mounted on cables, then noise reduction is achieved, but risk of disintegration upon impact increases
Solution Approach 1:
The patent applies preliminary protective measures by encasing the noise absorbing panels in energy absorbing material before they are mounted on the cables. This pre-protection ensures that when impact occurs, the panels are already prepared to absorb energy and resist disintegration, maintaining reliability while providing noise reduction
Solution Approach 2:
The noise absorbing panels are surrounded by energy absorbing material that acts as a cushion before impact occurs. This beforehand cushioning protects the panels during vehicle collisions, preventing disintegration while maintaining the noise reduction function
3Ease of manufacture
If panels are mounted at single level on cables, then installation is simplified, but panels may swing around cables during operation
Solution Approach 1:
The patent divides the mounting system into multiple levels along the cable structure. By distributing mounting points at different heights and positions, the panel is segmented into a more stable configuration that prevents swinging while still maintaining relatively simple installation procedures
4Object-affected harmful factors
If brittle materials like glass or plastic are used for noise absorbing panels, then noise reduction is achieved, but panels break upon vehicle impact
Solution Approach 1:
The patent employs composite material construction by encasing noise absorbing panels in energy absorbing material. This composite structure combines the noise reduction properties of materials like mineral wool with the impact resistance of surrounding protective material, achieving both noise reduction and impact resistance simultaneously
Solution Approach 2:
The patent uses energy absorbing material that can deform and absorb impact energy in place of brittle permanent structures. This approach accepts controlled deformation of the protective material to prevent disintegration and flying objects, maintaining safety while providing noise reduction
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
Enhances road safety by effectively absorbing vehicle impact energy, preventing panel disintegration, and providing a continuous noise-reducing barrier that maintains structural integrity and safety.
Implementation Method 1
the noise absorbing panel comprises a noise absorbing material board which is encased in an energy absorbing material
Implementation Method 2
the noise absorbing panel comprises a noise absorbing material board which is encased in an energy absorbing material provided with openings. Such an energy absorbing material provided with openings can be formed by a mesh, a grid or a perforated material
Data Source
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AI summary
The present invention concerns a cable road safety fence for installation at a lateral or median side of a road, said cable safety fence comprises a series of spaced apart upright posts (1), and a plurality of tensioned cables (2) provided at different levels on and supported by said posts (1), wherein at least one noise absorbing panel (3) is mounted onto the cables (2) with at least two mounting points (4), said points being at different levels.