Pivot Unit for Barrier Walls with 90-Degree Articulation
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Solution Overview
Problem
Existing highway barriers, such as the Jersey-style reinforced concrete barriers, are heavy, difficult to handle, and lack the ability to absorb shock upon impact, while newer deformable barriers with limited coupling elements restrict pivotal movement to only a few degrees, making it impossible to form corners or angles of 90° or more.
Innovation Solution
A pivot unit comprising first and second end connectors with a hinge post allowing pivotal motion of at least 90° between connected barrier devices, enabling the formation of corners or angles greater than 90° in barrier walls by using a hinge post mounted by a pin to each end connector, allowing for increased articulation between adjacent barriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional Jersey-style reinforced concrete barriers are used, then structural strength and continuity are improved, but weight and handling difficulty increase significantly
Solution Approach 1:
The barrier system is divided into modular segments that can be independently handled and assembled. Each barrier unit is a self-contained module with standardized coupling elements, allowing the overall barrier system to achieve continuous strength while individual units remain lightweight enough for standard equipment to handle.
Solution Approach 2:
The barrier units utilize composite construction combining rigid structural components with energy-absorbing materials. This allows the barriers to maintain structural integrity and strength while reducing overall weight compared to solid concrete barriers, enabling handling by conventional equipment.
2Loss of energy
If deformable barrier materials are used to improve impact absorption, then vehicle impact force absorption is improved, but coupling element strength and connection reliability may worsen
Solution Approach 1:
The coupling system separates the connection function from the energy absorption function. Rigid coupling elements provide reliable mechanical connection between units, while dedicated energy absorption zones within each unit handle impact forces, preventing the connection points from being compromised by impact stresses.
Solution Approach 2:
The barrier design incorporates energy absorption mechanisms that activate during impact to reduce forces transmitted to coupling elements. This cushioning effect protects the mechanical connections from excessive loads that would compromise reliability, allowing deformable materials to absorb energy while maintaining connection integrity.
3Ease of manufacture
If standard coupling elements are used to connect barriers end-to-end, then ease of assembly is improved, but articulation capability and corner formation ability worsen
Solution Approach 1:
The coupling system incorporates movable and adjustable components that allow the barrier units to articulate relative to each other. Hinged connections and adjustable coupling mechanisms enable the barrier wall to form corners and adapt to various geometries while maintaining secure connections, transforming a static rigid system into a dynamically adaptable structure.
Solution Approach 2:
The coupling elements are designed with adjustable parameters such as connection angles and positioning options. This allows the same coupling mechanism to accommodate different barrier configurations including straight sections, corners, and angled installations, providing versatility without requiring multiple specialized connection types.
4Device complexity
If limited pivotal movement coupling is used, then connection simplicity is improved, but ability to form corners and angles worsens
Solution Approach 1:
The coupling mechanism incorporates hinged or articulating components that enable greater than 90-degree articulation between adjacent barrier units. This dynamic connection allows the barrier wall to form corners and angled configurations while maintaining relatively simple coupling elements that do not require complex assembly procedures.
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 pivot unit allows for the creation of barrier walls with increased articulation capabilities, reducing the weight and handling difficulties of traditional barriers while enhancing impact absorption and reducing friction, thereby minimizing damage to vehicles and injuries.
Implementation Method 1
a hinge post extending between the end connectors. The hinge post is mounted by a pin to each end connector allowing pivotal motion of one end connector, and the barrier device to which it is coupled, through an angle of at least 90° relative to the other end connector and its associated barrier device
Data Source
AI summary
A pivot unit for use with barrier devices which may be connected end-to-end to form a barrier wall. The pivot unit comprises first and second end connectors, each of which may be coupled to the end of one barrier device, and a hinge post extending between the end connectors. The hinge post is mounted by a pin to each end connector allowing pivotal motion of one end connector, and the barrier device to which it is coupled, through an angle of at least 90° relative to the other end connector and its associated barrier device.