Barrier Cable Anchor Wedge Retention Mechanism
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Solution Overview
Problem
Existing barrier cable anchor systems lack a reliable and efficient mechanism for securely coupling barrier cables to retaining structures, particularly in dynamic environments like parking garages and highways, where secure anchoring is crucial for vehicle and pedestrian safety.
Innovation Solution
A barrier cable anchor system that includes an anchor body with a mounting extension and retaining collar, which is mechanically coupled to an anchor plate using a mounting nut, and features retaining wedges that increase the normal force on the cable, preventing removal and ensuring secure coupling to the retaining structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cable anchoring methods are used, then installation is simpler, but reliability of secure coupling is insufficient
Solution Approach 1:
The anchor system is divided into distinct functional components: a cable receiving portion, a retaining collar with retaining wedges, and a mounting extension with mounting nut. This segmentation allows each component to perform its specific function optimally while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The retaining wedges act as intermediary elements between the cable and the retaining collar. These wedges convert the normal force into a frictional force that secures the cable, providing a reliable coupling mechanism that is more dependable than direct friction-based anchoring alone.
2Strength
If friction-based retention is used, then device complexity is reduced, but resistance to cable removal is insufficient
Solution Approach 1:
The retaining wedges utilize the normal force applied to the cable and convert it into a beneficial frictional force through their inclined surfaces. This conversion transforms the simple friction concept into a more effective retention mechanism that significantly increases resistance to cable removal while adding minimal complexity.
Solution Approach 2:
The retaining wedges change the effective friction parameter by converting normal force into enhanced frictional resistance. This parameter transformation allows the system to achieve higher removal resistance without proportionally increasing the applied normal force, effectively amplifying the retention strength.
3Reliability
If normal force is increased to prevent cable removal, then retention strength improves, but the cable may slip or damage the anchor
Solution Approach 1:
The retaining wedges serve as intermediary elements that distribute and transform forces. Instead of applying normal force directly to the cable, the wedges convert it into frictional force through their inclined surfaces, providing reliable retention without the harmful effects of excessive direct normal force such as cable slippage or anchor damage.
Solution Approach 2:
The system replaces a direct normal force application mechanism with a friction-based retention mechanism mediated by the retaining wedges. This substitution transforms the mechanical interaction from direct compression to friction-based holding, improving reliability while eliminating the harmful effects associated with excessive normal force.
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 system effectively secures barrier cables to retaining structures, resisting removal and maintaining tension, thereby enhancing safety by providing a reliable and durable anchoring solution for barrier cable installations.
Implementation Method 1
retaining wedges that increase the normal force on the cable
Data Source
Figure 1
Figure 2
AI summary
A barrier cable anchor (100) for mechanically coupling a barrier cable (10) to a barrier retaining structure (20) comprises an anchor body (101) comprising a mounting extension (103) and an anchor body extension (102) and including a radially extending mounting face, a a retaining collar (111) coupled to the anchor body extension and including a tapered inner surface, and one or more retaining wedges (119) positioned within the retaining collar. The anchor body extension, mounting extension, and retaining collar may have bores therethrough. The retaining collar may include a threaded outer surface and the anchor body extension may include a threaded inner surface and the retaining collar may be threadedly coupled to the anchor body extension. The anchor may further comprise an anchor cap retained to the anchor body extension. The anchor cap may include a threaded inner surface and the retaining collar may be threadedly coupled to the anchor cap.