Roadway Crash Barrier with Nested Connecting Element
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Solution Overview
Problem
Existing traffic route protective devices are costly due to high material requirements and complex assembly processes, which hinder easy installation and stability optimization.
Innovation Solution
A protective device featuring a form-fitting connection between a stabilizing box profile and a post using a connecting element with angled edges, eliminating the need for screws and allowing for larger tolerances in post spacing, thus simplifying assembly and reducing material usage while maintaining high stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If protective devices are made with solid materials and multiple guide elements to increase stability, then stability is improved, but material cost increases
Solution Approach 1:
The connecting element is inserted into the box profile, with the connecting element having an L-shaped cross-section that fits within the hollow box profile structure. This nested configuration allows the connecting element to provide structural support and connection functionality while utilizing the existing box profile space, reducing the need for additional separate support structures and minimizing material usage.
Solution Approach 2:
The protective device is divided into modular components: posts, box profiles, and connecting elements. Each component can be independently manufactured and assembled. The box profile serves multiple functions as both a guide element and a stabilizing structure, while the connecting element provides the necessary mechanical connection without requiring extensive material.
2Strength
If individual parts are connected by screw connections to achieve firm connection, then connection strength is improved, but assembly complexity increases
Solution Approach 1:
The connecting element with L-shaped cross-section is inserted into the hollow box profile, creating a nested configuration where the connecting element fits within the box profile walls. This provides mechanical interlocking and firm connection without requiring separate fastening elements like screws, thereby reducing assembly complexity while maintaining connection strength.
Solution Approach 2:
The connecting element combines multiple functions: it serves as both the connection member and the stabilizing structure. The L-shaped cross-section integrates the connection function with the structural support function, eliminating the need for separate components and simplifying the overall assembly process.
3Manufacturing precision
If precise post spacing is required for proper assembly, then connection precision is improved, but installation time increases
Solution Approach 1:
The connecting element is inserted into the box profile in a nested configuration, providing mechanical guidance and self-alignment during assembly. This nested arrangement tolerates variations in post spacing while ensuring proper connection, eliminating the need for precise pre-measurement and adjustment of post positions during installation.
Solution Approach 2:
The connecting element with its specific L-shaped cross-section design provides self-alignment and self-positioning functionality when inserted into the box profile. The geometry of the connecting element automatically ensures proper orientation and connection without requiring external alignment tools or precise pre-positioning of posts.
Data Source
Figure 1A~1B
Figure 2a~2d
Figure 3
AI summary
The roadside crash barrier has at least one post (1) anchored in the ground (2) to carry the barrier as a box-shaped profile (4). The post also carries a vehicle deflection barrier (3), held at the post by a spacer. The profile is held at the post by a fastener, bonded to the post and engaging the profile in a positive fit. The barriers are at intervals, with gaps (U) between them.