Railway Vehicle Mobile Platform for Wheelchair Access
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Solution Overview
Problem
Current railway vehicle designs that allow access for users in wheelchairs to the passenger compartment either slow down pedestrian traffic or require modifications to the upper part of the vehicle or the universal toilet module, failing to provide seamless access without impacting passenger flow or design.
Innovation Solution
A railway vehicle design featuring a ramp between the first fixed access platform and the lower floor, with a mobile access platform that can move vertically and a control unit to manage its position, along with an anti-tipping system and a universal toilet module accessible from the mobile platform, ensuring wheelchair users can access the lower passenger compartment independently without hindering pedestrian flow and maintaining the original design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mobile platform is used to allow wheelchair users to access the passenger compartment, then accessibility for wheelchair users is improved, but pedestrian traffic flow is slowed down
Solution Approach 1:
The access system is segmented into separate functional zones: a first level with fixed platforms for pedestrian access, a second level with mobile platforms for wheelchair access, and a ramp connecting them. This spatial segmentation allows pedestrians and wheelchair users to operate in different zones simultaneously, improving both accessibility and traffic flow efficiency.
Solution Approach 2:
The invention introduces a vertical dimension by creating two distinct levels for access. Wheelchair users access the vehicle via the ramp to the first level, while pedestrians use the second level platforms. This dimensional separation resolves the conflict between accessibility and traffic flow by operating in different spatial planes.
2Ease of operation
If a ramp is added to allow wheelchair access between levels, then accessibility is improved, but the design of the upper part of the vehicle must be modified
Solution Approach 1:
The vehicle structure is divided into independent modular components: the ramp system as a separate access module, the mobile platforms as independent units, and the fixed platforms as stable support structures. This modular segmentation allows the ramp to be integrated without requiring comprehensive redesign of the upper vehicle structure.
Solution Approach 2:
The ramp acts as an intermediary element connecting the two levels. It is designed as a separate mediating structure that bridges the gap between the first and second levels without requiring modification of the vehicle's upper structural framework, thus maintaining design integrity while enabling accessibility.
3Ease of operation
If a mobile platform is positioned at the first level for wheelchair access, then autonomous access is enabled, but the universal toilet module cannot be integrated on the same level
Solution Approach 1:
The vehicle interior is segmented into distinct functional zones: the first level with mobile platforms for wheelchair access to the passenger compartment, and the second level with fixed platforms and the universal toilet module. This spatial segmentation allows both the mobile platform system and the toilet module to coexist without design conflicts.
Solution Approach 2:
The toilet module is positioned on the second level, utilizing the vertical dimension to resolve the spatial conflict. Wheelchair users access the passenger compartment via the mobile platform on the first level, while the toilet module occupies the second level, allowing both functions to operate independently without interference.
Data Source
Figure 1
Figure 2
AI summary
The rail vehicle (1) comprises, on a first level (10), a lower passenger compartment (6) including a lower floor (44), and on a second level (12) offset in height from said first level (10), a first access door (22) from a first side (26) of the rail vehicle, a second access door (24) from a second side (28) of the rail vehicle opposite the first side (26), a first fixed access platform (48) located opposite the first access door (22), and an access platform (52), movable vertically relative to the lower floor (44), interposed between the second door (24) and the first fixed access platform (48). The rail vehicle (1) comprises a ramp (32) extending between the first fixed access platform (48) and the lower floor (44), allowing a wheelchair user to access the lower passenger compartment (6).