Reverse Telescopic Security Barrier Mechanism
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Solution Overview
Problem
Existing security barriers face issues such as forming trap hazards, requiring deep foundations that interfere with urban infrastructure, and being less robust, which compromises safety and effectiveness.
Innovation Solution
A reverse telescopic security barrier apparatus with a configuration where the inner post is lowermost in the deployed position, providing improved strength and shallow mounting, utilizing a base plate and reinforcing bar for enhanced ground connection, and a drive device with connection mechanisms for efficient deployment and retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pivotable security bollard is used, then the barrier can be deployed and retracted, but it forms a trap hazard with the ground creating a safety risk
Solution Approach 1:
The patent inverts the traditional telescopic mechanism by making the inner post lowermost in the deployed position rather than uppermost. This reversal eliminates the trap hazard because the barrier moves from below ground level upward, rather than creating a downward-moving trap. The inner post engages the outer post to lift it upward, inverting the conventional motion sequence.
Solution Approach 2:
The patent employs a nested telescopic structure where the inner post is positioned within the outer post. The inner post acts as a lifting mechanism that engages the outer post to raise it from below ground level to the deployed position above ground, enabling compact storage and clean deployment without trap hazards.
2Length of stationary object
If a telescopic post with conventional configuration is used, then the foundation depth is reduced, but the barrier strength is compromised
Solution Approach 1:
By inverting the telescopic configuration so the inner post is lowermost when deployed, the patent achieves both shallow foundation requirements and high barrier strength. The inverted arrangement allows the inner post to effectively lift and support the outer post, creating a strong deployed position while minimizing excavation depth.
3Strength
If a high security barrier is used, then vehicle crash impact is withstood, but the barrier is robustly constructed requiring deep foundations
Solution Approach 1:
The patent employs a dynamic telescopic mechanism that transitions from a compact stowed position below ground level to a deployed position above ground level. This dynamic arrangement provides high security barrier strength when needed while eliminating the need for deep foundations, as the barrier is only fully extended during deployment rather than being permanently fixed at full height.
Data Source
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AI summary
Security barrier apparatus (10) comprising a support (12, 14) and a barrier member (18, 20) movable relative to the support between a stowed position and a deployed position, the support (12, 14) having an upper part (16) for positioning substantially at ground level. The barrier member (18, 20) has at least two telescopic posts one within the other, the inner post (20) being lowermost in the deployed position. A linkage is provided between an outer post (18) and the inner post (20). In use, motion of the outer post (18) between the stowed position and the deployed position causes corresponding motion of the inner post (20).