Tapered Friction Element for Roadblock Displacement Control
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Solution Overview
Problem
Existing roadblocks face challenges in enhancing their blocking capabilities, particularly in preventing displacement after impact, due to increased awareness in public space security and the need to handle vehicle collisions effectively.
Innovation Solution
A friction-increasing element with a tapered contact edge is attached to the roadblock, which increases frictional resistance by engaging with the ground upon tilting or toppling, inhibiting further displacement through localized high pressure, and can be easily integrated into new or existing roadblocks with various coupling options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the roadblock is designed to be easily installed and removed, then the ease of operation is improved, but the blocking capability may be reduced
Solution Approach 1:
The roadblock system is divided into modular components: the main barrier element and separate friction-increasing elements. This segmentation allows the barrier to be easily assembled and disassembled while the friction elements can be independently attached or removed based on security requirements.
Solution Approach 2:
The friction-increasing elements are pre-positioned on the ground surface at anticipated impact locations. This preliminary placement ensures that when a vehicle collides with the roadblock, the friction elements are already in position to immediately engage and prevent displacement, enhancing blocking capability without complicating the installation process.
2Reliability
If the roadblock weight is increased to improve blocking functionality, then the blocking capability is improved, but the ease of transport and storage deteriorates
Solution Approach 1:
Instead of uniformly increasing the weight of the entire roadblock structure, the invention applies localized friction-increasing elements only at specific contact points where vehicle impact is most likely to occur. This targeted approach enhances blocking functionality precisely where needed while keeping the overall system lightweight and easy to transport.
Solution Approach 2:
The friction-increasing elements utilize materials with high friction coefficients and potentially high strength-to-weight ratio characteristics. This allows the system to achieve enhanced blocking capability through material properties rather than sheer mass, maintaining ease of transport while improving functionality.
3Reliability
If the blocking capability is enhanced through additional features, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The friction-increasing functionality is extracted as a separate, independent element from the main roadblock structure. This allows the blocking capability to be enhanced without integrating complex mechanisms into the core barrier design. The extracted friction elements can be simple attachments that engage with the ground surface, minimizing added complexity while maximizing security effectiveness.
4Reliability
If the friction-increasing element uses protruding teeth to engage the ground, then the frictional resistance is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The friction-increasing elements utilize the geometric parameter of tapered contact edges rather than requiring precisely manufactured tooth profiles. The tapered geometry naturally concentrates force during vehicle impact, generating high frictional resistance through pressure distribution rather than relying on precise tooth-to-ground engagement. This parameter change from tooth-based to tapered-edge-based friction generation significantly reduces manufacturing precision requirements while maintaining or enhancing frictional resistance.
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 friction-increasing element effectively enhances the blocking capability of roadblocks by preventing displacement and tilting, providing reliable and cost-effective enhancement without requiring significant maintenance or production changes, and can be easily adapted or integrated into existing systems.
Implementation Method 1
the friction between the frictional resistance between the road barrier and the ground increases due to which the further displacement (shift) of the barrier over the ground is inhibited or prevented
Implementation Method 2
The cause of this is the local high pressure on the location(s) where the protruding tooth (teeth) engage on the ground/floor
Data Source
AI summary
The present invention relates to a friction-increasing element for attachment to a roadblock, comprising a friction-increasing element body for attachment to the roadblock, and at least one tapered contact edge, which tapered contact edge is carried by the friction-increasing element body such that the tapered contact edge is facing away from the friction-increasing element body. The invention also relates to a roadblock provided with a least one of such friction-increasing element.