Rail Vehicle Emergency Exit Door with Rotatable Parts and Foldable Ramp
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rail vehicle emergency exit systems are inadequate for quick and safe evacuation, especially in tunnels with limited space and varying levels, and lack a solution that is lightweight, inexpensive, and does not obstruct the driver's vision, while also allowing evacuation to another rail vehicle.
Innovation Solution
A rail vehicle emergency exit door unit with a detachable design comprising a door frame, upper and lower parts, where the upper part is rotatably mounted on the roof-side edge and the lower part on the chassis-side edge, featuring a foldable ramp and screw connections for attachment to the vehicle, allowing for easy installation and maintenance, and incorporating a spring device to keep the upper part open, ensuring efficient and safe evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional emergency exit design is used with fixed structure and welding, then structural strength is ensured, but manufacturing complexity and installation time increase significantly
Solution Approach 1:
The emergency exit door is divided into separate modular components including the door frame, upper door part, lower door part, and foldable ramp. These segments can be manufactured independently and assembled using screw connections instead of welding, significantly reducing manufacturing complexity and installation time while maintaining structural integrity
Solution Approach 2:
The door design incorporates rotatable mounting at the roof-side and chassis-side edges, allowing the door parts to rotate open during emergency evacuation. The foldable ramp can be deployed dynamically to bridge the height difference between the train floor and track bed, providing adaptability while keeping the structure relatively simple
2Reliability
If a heavy-duty fixed emergency exit structure is used, then reliability is improved, but weight increases and driver's field of vision is obstructed
Solution Approach 1:
The emergency exit door utilizes rotatable mounting mechanisms at the roof-side and chassis-side edges, allowing the door to pivot open during evacuation. This dynamic design replaces heavy fixed structures with lighter movable components that maintain reliability through controlled motion rather than brute-force static strength
Solution Approach 2:
The upper door part, lower door part, and foldable ramp are combined into an integrated emergency exit assembly that functions as a unified system. This merging allows the components to work together to achieve reliable evacuation capability while minimizing individual component weights
3Adaptability or versatility
If a simple emergency exit design is used, then cost is reduced, but the ability to evacuate to both track bed level and another rail vehicle is limited
Solution Approach 1:
The emergency exit door is designed with dual functionality: it can evacuate passengers to the track bed level using the foldable ramp, and it can also facilitate train-to-train evacuation by opening to another rail vehicle at the same level. This multi-functionality is achieved through the rotatable door mechanism and deployable ramp structure
Solution Approach 2:
The foldable ramp is divided into multiple segments that can be deployed and configured for different evacuation scenarios. This segmentation allows the same basic structure to adapt to both track-bed-level evacuation and train-to-train evacuation without requiring completely separate systems
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 solution enables flexible and efficient evacuation to both track bed level and another rail vehicle, reducing complexity and weight, improving passenger throughput, and maintaining the driver's field of vision, while being cost-effective and easy to install without the need for welding.
Implementation Method 1
an upper door part (3) and a lower door part (4), wherein the upper door part (3) is rotatably mounted on the roof-side edge of the door frame (2) and the lower door part (4) is rotatably mounted on the edge of the door frame (2) on the chassis side
Implementation Method 2
a spring device (9) is provided, which holds the upper part (3) in the open position
Implementation Method 3
the lower door part (4) comprises a foldable ramp (5)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Emergency exit unit (1) for a rail vehicle, for detachable mounting on an end of a rail vehicle (10), said unit comprising a door frame (2), an upper door part (3) and a lower door part (4), wherein the upper door part (3) is rotatably seated at the edge of the door frame (2) proximal to the roof, and the lower door part (4) is rotatably seated at the edge of the door frame (2) proximal to the vehicle chassis, and wherein at least one screw connection is provided for mounting the emergency exit unit (1) for a rail vehicle on an end of a rail vehicle (10).