Rail Vehicle Entry Module for Platform Height Adaptation
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Solution Overview
Problem
Rail vehicles face challenges in accommodating diverse infrastructure and accessibility requirements due to varying platform heights and legal standards, necessitating flexible and adaptable boarding systems that can be modified to meet changing conditions without significant redesign.
Innovation Solution
A modular boarding system where interchangeable entry modules can be exchanged to adjust the boarding height, gap between the vehicle and platform, and floor design, allowing for flexible adaptation of the entry area without altering the underlying vehicle structure, enabling the vehicle to be retrofitted or converted to suit different infrastructure and accessibility needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle is designed with a fixed entry area configuration, then the manufacturing cost and structural complexity are reduced, but the adaptability to different infrastructures and accessibility requirements deteriorates
Solution Approach 1:
The entry area is divided into separate modular components (floor module, wall module, ceiling module, door module) that can be independently designed, manufactured, and exchanged. This segmentation allows the vehicle to accommodate different infrastructure requirements by swapping modules without redesigning the entire entry area, thus improving adaptability while keeping individual module complexity manageable.
Solution Approach 2:
The standardized interface design enables a single module type to serve multiple functions across different vehicle models and infrastructure configurations. The universal connection system allows the same floor module to be installed in various positions and orientations, providing multi-functionality that enhances adaptability without proportionally increasing structural complexity.
2Adaptability or versatility
If the entry area is designed to meet specific accessibility standards, then accessibility for people with physical disabilities is improved, but the flexibility to adapt to changing legal requirements deteriorates
Solution Approach 1:
The entry area configuration is made dynamic through the ability to exchange modules during the vehicle's operational life. Instead of a static design fixed at manufacturing, the modular system allows the entry area to be reconfigured to meet evolving accessibility standards, transforming the system from static to dynamically adaptable.
Solution Approach 2:
Different modules provide varying parameters for accessibility (different floor heights, gap sizes, ramp configurations). By changing which module is installed, the physical parameters of the entry area can be adjusted to comply with different legal requirements without modifying the underlying vehicle structure.
3Adaptability or versatility
If interchangeable entry modules are implemented, then the flexibility and adaptability of the vehicle are improved, but the device complexity and initial manufacturing cost increase
Solution Approach 1:
The standardized interface design serves as a universal connection system that works across all module types and vehicle models. This universality reduces the overall system complexity by using a common connection standard rather than requiring unique interfaces for each module type, thus mitigating the complexity increase from modularity.
Solution Approach 2:
The modular design enables individual entry area components to be discarded (removed) and recovered (reinstalled in different configurations) as needed. This allows the vehicle operator to discard outdated modules and install new ones without wasting the entire entry area structure, reducing long-term complexity management.
4Ease of operation
If the floor structure is designed with a recess for module installation, then the ease of module exchange is improved, but the structural strength and rigidity may deteriorate
Solution Approach 1:
The floor structure is segmented to include dedicated recesses that accommodate individual modules. This segmentation separates the structural load-bearing function from the functional entry area components, allowing the floor to maintain strength while providing easy module exchange through the pre-formed recesses.
Solution Approach 2:
The recesses are pre-formed during the floor manufacturing process, preparing the structure in advance for module installation. This preliminary action eliminates the need for complex field modifications during module exchange, making the exchange process simple while maintaining the floor's structural integrity through the pre-engineered recess design.
Data Source
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AI summary
Rail vehicle car body (1), comprising - a floor (2) - a substructure (33), wherein the floor (2) and the substructure (33) have a recess (11, 13, 15, 17, 34) in at least one entry area, - an entry module (12, 14, 16, 18) which is inserted into the recess (11, 13, 15, 17, 34) and which is removable from the recess (11, 13, 15, 17, 34), wherein the entry module (12, 14, 16, 18) has a first floor height at an entry edge (27) and is interchangeable with an alternative entry module (26) which has a different floor height at an entry edge (28).