Movable Sealing Web for High-Speed Rail Door Pressure Sealing
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Solution Overview
Problem
Existing rail vehicle entrance doors for high-speed traffic are complex and costly to construct due to their pressure-resistant sealing systems, which hinder the development of simpler and more cost-effective solutions.
Innovation Solution
A movable sealing web is integrated into the vehicle floor, capable of protruding to form a sealing surface when the door is closed and recessing into the floor when open, allowing for a stepless entry area and utilizing prestressed seals to maintain a secure seal, while a pivotable flap in the entry area can serve as a ramp to bridge level differences between the vehicle and platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure-resistant sealing system with inflatable sealing is used for high-speed rail vehicle entrance doors, then sealing reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the complex inflatable sealing system and replaces it with a simple movable sealing web that can be manually or automatically positioned between sealing and non-sealing positions. This removes the need for compressed air systems, valves, and control mechanisms while maintaining effective sealing when the web is in the sealed position against the door frame.
Solution Approach 2:
Instead of using a fixed complex sealing system that requires active control, the patent inverts the approach by using a movable simple web that can be positioned as needed. The sealing function is achieved by the presence of the web in a specific position rather than by active inflation/deflation cycles, simplifying the overall system.
2Ease of operation
If a movable sealing web is used to enable barrier-free entry, then ease of operation is improved, but sealing reliability may deteriorate
Solution Approach 1:
The movable sealing web acts as an intermediary element between the door frame and the interior space. When positioned for sealing, it creates an effective barrier; when retracted, it allows barrier-free access. This single element mediates between the conflicting requirements of sealing reliability and ease of operation.
Solution Approach 2:
The patent employs a dynamic sealing solution where the sealing web can move between two extreme positions (sealed and open) rather than relying on a fixed complex mechanism. This dynamic positioning allows the system to adapt to different operational states while maintaining simplicity.
3Reliability
If a sealing web protrudes from the floor to form a sealing surface, then sealing effectiveness is improved, but ease of operation (barrier-free entry) deteriorates
Solution Approach 1:
The sealing web transitions dynamically between protruding (when sealing is needed) and retracted (when barrier-free entry is needed) positions. This dynamic repositioning resolves the contradiction by allowing the same element to serve both sealing and accessibility functions at different times.
Solution Approach 2:
The sealing web is designed as a separate movable component distinct from the fixed floor structure, allowing it to be independently positioned. This segmentation enables the web to protrude when needed for sealing and retract when needed for accessibility without compromising the integrity of either function.
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
This configuration enables a simple, cost-effective, and barrier-free entry and exit system with enhanced sealing efficiency and level adjustment, ensuring a seamless transition between closed and open states without steps, thus facilitating easy access and maintaining pressure resistance.
Implementation Method 1
the seal is prestressed in the sealing state between the sealing surface of the sealing web and the door, in particular in the horizontal direction
Implementation Method 2
the further seal is prestressed in the sealing state between the sealing web and the floor
Implementation Method 3
it forms a sealing surface for sealing the closed door to the interior of the vehicle
Data Source
AI summary
The invention relates to a vehicle, in particular a passenger rail vehicle, having at least one door (1), wherein, in the area of the door (1), the vehicle comprises a sealing web (3) which is arranged on a floor (2) of the vehicle and can be moved at least between a sealing and an open state, such that, in the sealing state, the sealing web projects out of the floor (2) and forms a sealing surface (12) for sealing off the closed door (1) with respect to the interior of the vehicle, and that, in the open state, the sealing web is recessed in the floor (2).