Barrier Cable Coupler with Tapered Wedges for Secure Tensioning
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Solution Overview
Problem
Existing barrier cable systems lack an efficient method to securely couple and tension barrier cables, which can lead to loose connections and reduced effectiveness in restraining vehicles and pedestrians.
Innovation Solution
A barrier cable coupler with a coupler body, fixed and tensioning retaining collars, and tensioning nut, allowing for secure engagement and tensioning of cable ends using tapered wedges and a tensioning wrench, effectively coupling and tightening two lengths of barrier cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional barrier cable connection methods are used, then the structure is simple, but the connection security and tensioning capability are insufficient
Solution Approach 1:
The coupler body is divided into distinct functional zones: a first cavity for receiving cable ends and a second cavity for tensioning operations. This segmentation allows each zone to perform its specific function optimally while maintaining overall structural integrity and reliability of the connection.
Solution Approach 2:
The patent employs nested structures where the cable end is inserted into the first cavity, which is itself contained within the coupler body. The tensioning mechanism is nested within the second cavity, creating a compact multi-functional assembly that enhances connection security without excessive complexity.
2Stability of the object's composition
If barrier cables are extended between structures, then the restraining capability is provided, but cable slippage and loose connections occur over time
Solution Approach 1:
The coupler is pre-configured with tapered surfaces and wedge members before cable installation. When the cable end is inserted, the tapered geometry automatically generates wedging action that secures the cable in place. This preliminary structural arrangement ensures stable cable tension from the moment of installation, preventing slippage and maintaining connection durability over time.
3Reliability
If a secure coupling method is implemented, then cable slippage is prevented, but the device complexity increases
Solution Approach 1:
The patent utilizes changes in geometric parameters, specifically tapered surfaces with defined angles, to transform the simple insertion motion into a secure wedging action. This parameter-based approach achieves reliable cable retention through geometric constraints rather than complex mechanical components, maintaining simplicity while ensuring cable ends cannot slip out of the coupler.
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 solution provides a secure and efficient method to couple and tension barrier cables, enhancing their restraining capability and durability by maintaining tension and preventing cable slippage.
Implementation Method 1
the fixed retaining collar (109) including a tapered inner surface (115); one or more fixed end wedges (117) positioned within the tapered inner surface (115) of the fixed retaining collar (109)... the tensioning retaining collar (127) including a tapered inner surface; one or more tensioning end wedges (135) positioned within the tapered inner surface
Data Source
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AI summary
A barrier cable coupler for coupling two lengths of barrier cable comprises a coupler body including a threaded inner surface, a first end, and a second end; a fixed retaining collar having an outer surface and being retained to the first end of the coupler body, the fixed retaining collar including a tapered inner surface; one or more fixed end wedges positioned within the tapered inner surface of the fixed retaining collar; a tensioning retaining collar having an outer surface, the tensioning retaining collar positioned at least partially within the second end of the coupler body and including a tapered inner surface; one or more tensioning end wedges positioned within the tapered inner surface of the tensioning retaining collar; and a tensioning nut including a threaded outer surface engaging the threaded inner surface of the second end of the coupler body and retaining the tensioning retaining collar therein.