Expandable Crowd Barricade Stability and Anti-Climb Design
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Solution Overview
Problem
Current portable crowd control fencing is inadequate for managing civil unrest, as it is lightweight, easily movable, and can be used as a weapon, failing to provide a stable barrier against climbing and offering limited resistance to force, thereby increasing the risk of violent interactions and civil disturbances.
Innovation Solution
The Expandable Crowd Barrier System consists of a heavy-duty welded aluminum Base Section with a modified upside-down W design and an Anti-Climb Section, secured with anchor bolts and tab-socket connections, allowing for expansion and contraction to resist forces and prevent climbing, while being designed to mitigate the risk of being used as a weapon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If lightweight portable fencing is used for crowd control, then ease of movement and deployment is improved, but resistance to force and stability deteriorates
Solution Approach 1:
The barricade system is divided into modular sections that can be independently assembled and connected. Each section contains standardized connection points that allow rapid assembly while maintaining structural integrity. The segmentation enables the system to be both easily deployed and sufficiently strong when properly assembled.
Solution Approach 2:
Connection points and assembly mechanisms are pre-positioned during manufacturing, allowing for rapid field assembly without requiring complex tools or procedures. The pre-configured connection system enables security personnel to quickly deploy effective barriers while ensuring proper structural alignment for force resistance.
2Ease of operation
If easily movable fencing is used, then ease of deployment is improved, but stability and resistance to being pushed into protected areas deteriorates
Solution Approach 1:
The barricade is composed of multiple connected sections with standardized joining mechanisms. This modular design allows rapid deployment while creating a continuous stable structure when assembled. The segmented approach enables both ease of deployment and operational stability.
Solution Approach 2:
The barricade sections feature a three-dimensional configuration with vertical and horizontal structural elements that interlock. This multi-dimensional structure provides stability in multiple directions, resisting forces from various angles while maintaining ease of assembly through standardized connection points.
3Ease of manufacture
If exposed connection points are used for assembly, then ease of assembly is improved, but vulnerability to disassembly and weaponization deteriorates
Solution Approach 1:
Connection mechanisms are designed with built-in security features that prevent unauthorized disassembly or weaponization. The connection points require specific tools or procedures to disassemble, and the structure includes anti-prying features that negate attempts to use the barricade as a weapon, while still allowing legitimate assembly operations.
4Device complexity
If fencing without anti-climb features is used, then simplicity is improved, but ability to prevent climbing deteriorates
Solution Approach 1:
The barricade incorporates vertical structural elements and configured rails that create an anti-climb profile. The three-dimensional arrangement of structural members makes climbing difficult without adding significant complexity to the assembly process or requiring additional components.
Data Source
AI summary
A portable crowd barricade system consisting of two sections, an upper section and a lower section. Each section shares a common structural design with offset contact points on the ground that decrease in width from the lower section through the upper section to create forward and backward force stability throughout the structure. This stability is further strengthened by securing points to a variety of surface material with anchor bolts. The upper section frame is covered by small diameter mesh to inhibit climbing. The upper section is further strengthened by a removable support member that connects the top distal ends of the upper section, rearwardly to the surface through an anchor bolt. Each section is comprised of a socket side and a tab side that creates a protected connection point to allow for both a secure connection for an adjacent barricade section but also allows for forward and rearward movement.