Vehicle Retention System Guide Plate Dynamics
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Solution Overview
Problem
Existing vehicle restraint systems face challenges in achieving improved starting behavior, containment capability, and ease of assembly while maintaining effective protection against vehicle breaches and minimizing damage.
Innovation Solution
A vehicle restraint system with detachable crash barriers featuring a guide plate with anchor sections and connecting means, allowing for lateral displacement and rotation during impacts, and incorporating elastomer feet for increased friction and leveling, which enables efficient distribution of forces and potential manual repositioning post-impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If crash barriers are rigidly anchored to the ground, then protection against vehicle breaches is improved, but damage to the restraint system during impact increases
Solution Approach 1:
The guide arrangement allows the crash barrier to undergo controlled lateral displacement and rotation during impact, transforming the system from a rigid static structure to a dynamic one that can adapt to impact forces. The connecting means with elongated slots enable the barrier to move laterally while remaining guided, and the bracing elements allow rotational movement, creating a dynamic response that reduces peak forces and damage.
Solution Approach 2:
The system changes its mechanical parameters during impact by transitioning from a fixed position to a displaced position. The guide arrangement permits lateral displacement up to the length of the elongated slots, and the bracing elements allow rotation within certain angular limits. These parameter changes enable the system to absorb impact energy while maintaining protection capability.
2Reliability
If crash barriers are firmly fixed to prevent movement, then containment capability is improved, but starting behavior and range of action deteriorate
Solution Approach 1:
The guide arrangement creates a dynamic system that can transition between fixed and movable states. During normal operation, the crash barrier appears fixed and provides containment. During impact, it dynamically displaces laterally and rotates, improving starting behavior and range of action without sacrificing containment capability.
Solution Approach 2:
The connection between the crash barrier and ground is segmented into multiple functional components: the guide plate with elongated slots for lateral movement, the connecting means for attachment, and the bracing elements for rotational movement. This segmentation allows different degrees of freedom while maintaining overall containment capability.
3Reliability
If crash barriers use rigid anchoring, then protection against vehicle breaches is improved, but assembly and maintenance effort increases
Solution Approach 1:
The anchoring system is segmented into modular components: guide plates that can be independently installed, connecting means that facilitate attachment, and bracing elements that can be adjusted. This modularity simplifies assembly and maintenance compared to rigid monolithic anchoring systems.
Solution Approach 2:
The dynamic guide arrangement with elongated slots and movable bracing elements allows for easier assembly and adjustment compared to rigid fixed anchoring. The components can be installed and adjusted to accommodate different installation conditions, reducing assembly effort while maintaining protection capability.
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 achieves enhanced starting behavior, containment capability, and reduced damage by allowing defined lateral displacement and rotation, minimizing the need for component replacement and facilitating easy assembly and maintenance.
Implementation Method 1
incorporating elastomer feet for increased friction and leveling
Implementation Method 2
incorporating elastomer feet for increased friction and leveling
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
The vehicle restraint system 1 for limiting the driving path consists of detachably connected guide rails 2. Each guide rail 2 has a base body 4 with bottom-side skids 25, 26 and is movable transversely to the roadway within limits on at least one bottom-side guide arrangement 23. The guide arrangement 23 comprises a guide plate 29, which has a central section 30 and an anchor section 31, 32 at each end. The central section 30 has an elongated hole 35 extending longitudinally along the guide plate 29. Each anchor section 31, 32 has an elongated hole 31 oriented transversely to the longitudinal direction LR1 of the guide plate 29. The guide plate 29 can be fixed to the ground 3 by means of anchoring means 37. For this purpose, the anchoring means 37 are mounted through the elongated holes 35 in the anchor sections 31, 32. The base body 4 can be mounted on the guide plate 29 of the guide arrangement 23 with a first skid 25.The first skid 25 has a horizontal plate 27 in which at least one elongated hole 43, 44 is provided, oriented transversely to the longitudinal direction LR2 of the first skid 25. The first skid 25 can be coupled to the guide plate 29 via a connecting element 45, incorporating at least one cam plate 48, 49. For this purpose, the connecting element 42 is guided through the elongated hole 35 in the central section 30 of the guide plate 29 and the elongated hole 43, 44 in the horizontal plate 37 of the first skid 25 and clamped in place, including the cam plate 48, 49.