Tensioned Cable Security Fence for Rapid Deployment
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Solution Overview
Problem
Existing security fences are heavy, difficult to install and maintain, and lack effective resistance to both bullet fire and vehicle impacts, necessitating a solution for rapid deployment and enhanced impact resistance.
Innovation Solution
A bullet-resistant security fence design featuring horizontally extending panels supported by H-beam posts, with tensioning mechanisms and adjustable stabilizers, and a ballistic core formed from aluminum plate or fabric, capable of absorbing kinetic energy from vehicle impacts and rapidly deployed for temporary installations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If bullet resistant metal panels are used to form security fences, then ballistic resistance is improved, but weight increases making installation and maintenance difficult
Solution Approach 1:
The patent uses flexible cable elements instead of rigid metal panels to provide ballistic resistance. The cables are tensioned between support structures to form a barrier that can stop bullets while being significantly lighter than traditional metal panel fences. The flexibility of the cables allows them to absorb impact energy without the weight penalty of solid metal construction.
Solution Approach 2:
The invention replaces the traditional mechanical structure of solid metal panels with a tensioned cable system. This substitution uses the principles of tension and energy absorption in flexible elements rather than relying on the mass and rigidity of metal panels, achieving ballistic protection with reduced weight.
2Strength
If heavy metal panels are used to resist vehicle impacts, then impact resistance is improved, but ease of installation deteriorates
Solution Approach 1:
The patent employs flexible cable barriers that can be easily installed by tensioning between support posts. These cables are designed to absorb vehicle impact energy through elastic deformation and tension, providing impact resistance without requiring heavy metal panels that would be difficult to install and position.
3Strength
If traditional ballistic barriers are designed to stop bullets, then ballistic resistance is improved, but resistance to vehicle crashes deteriorates
Solution Approach 1:
The patent applies different properties to different parts of the barrier system. The cable composition, tension, and spacing are optimized to provide ballistic resistance at the cable level while the overall system configuration (cable diameter, tension force, spacing between support structures) provides vehicle crash resistance. This local optimization allows the same structure to address multiple threat types.
Solution Approach 2:
The invention uses composite cable constructions combining different materials with complementary properties. The cables incorporate high-strength, energy-absorbing materials that provide both ballistic protection and vehicle impact resistance, achieving dual functionality through material composition rather than requiring separate barrier systems.
4Duration of action of stationary object
If permanent security fence structures are installed, then long-term protection is improved, but deployment time deteriorates
Solution Approach 1:
The patent divides the security barrier into modular, pre-fabricated sections that can be quickly assembled on-site. Each module includes support structures and tensioned cable assemblies that can be independently installed and then connected to form a complete barrier system, significantly reducing deployment time compared to traditional permanent installations.
Solution Approach 2:
The barrier components are pre-assembled and pre-tensioned in controlled manufacturing environments before delivery to the installation site. This preliminary preparation ensures that field installation requires minimal adjustment and assembly steps, enabling rapid deployment while maintaining the structural integrity and protective performance of the finished barrier.
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
The fence effectively resists bullet fire and vehicle impacts, is easily assembled and disassembled, and offers economical manufacturing and installation options, providing enhanced security with adjustable configurations for various settings.
Implementation Method 1
the tensioning mechanism is operable to absorb kinetic energy from an object impacting the cables
Data Source
AI summary
A bullet resistant security fence resists impacts from objects, such as vehicles, impacting the fence. A configuration of a bullet resistance security fence can be rapidly assembled and deployed as a riot fence that can be disassembled and subsequently repositioned. The riot fence is stabilized by securement devices that pull adjacent ballistic panels toward intermediate support posts and by adjustably positionable stabilizers that can engage the ground surface in front and in rear of the riot fence, even if mounted on steps. Alternative security fence configurations provide more economical manufacturing and installation by having a ballistic panel between thin front and rear shells. The ballistic panel can be formed of aluminum plate or from multiple layers of ballistic fabric. A ballistic panel can be formed from strips of aluminum plate welded together to form seams that are covered by lathe formed from aluminum plate to maintain ballistic integrity.