Rail Vehicle Gap Bridge Scraper Plate Dirt Removal
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Solution Overview
Problem
Existing gap bridging devices for rail vehicles are prone to contamination, leading to potential operational failures due to dirt accumulation, which existing solutions like brushes and rubber lips fail to effectively address, especially when dirt is firmly adhered.
Innovation Solution
A gap bridging device featuring a movably mounted footplate with a scraper plate made of spring steel, attached to a cover plate, which applies spring force to ensure effective dirt removal and prevent soiling, designed for both sliding and folding sliding steps, with a sharp wearing edge and rubber profile for enhanced sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If brushes are used to remove dirt from the footplate, then dirt removal capability is improved, but installation space requirement increases and reliability decreases when faced with firmly adhering dirt
Solution Approach 1:
The invention extracts the dirt removal function from a complex brush mechanism and implements it through a simple scraper plate that works in conjunction with the footplate's own movement. The scraper plate is a minimal component that leverages the existing mechanical system rather than adding a separate complex cleaning mechanism.
Solution Approach 2:
The footplate's insertion movement itself performs the cleaning function by pressing the scraper plate against the footplate surface. The system uses its own operational movement to remove dirt, eliminating the need for separate powered brush mechanisms and reducing installation space requirements.
2Object-affected harmful factors
If rubber lips are used to prevent dirt ingress, then sealing capability is improved, but effectiveness against firmly adhering dirt decreases
Solution Approach 1:
The scraper plate performs preliminary dirt removal during the footplate insertion process, preventing dirt from reaching the sealing area. This preliminary cleaning action occurs before the footplate reaches its final position, ensuring that even firmly adhering dirt is removed in advance.
Solution Approach 2:
The invention changes the cleaning mechanism from a passive sealing approach (rubber lips) to an active scraping approach. By using a rigid scraper plate instead of a flexible rubber lip, the system can effectively remove firmly adhering dirt through mechanical scraping action rather than relying solely on sealing pressure.
3Adaptability or versatility
If the footplate is designed for frequent insertion and retraction, then operational flexibility is improved, but contamination risk increases
Solution Approach 1:
The scraper plate continuously removes dirt during every insertion and retraction cycle of the footplate. This continuous cleaning action ensures that the sealing area remains free of contamination throughout operational use, maintaining protection effectiveness without limiting operational frequency.
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 effectively removes dirt from the footplate during retraction, preventing interior soiling and ensuring the gap bridging remains operational, with the scraper plate's design and materials ensuring durability and ease of maintenance.
Implementation Method 1
a scraper plate made of spring steel is provided, which is attached to an underside of the cover plate and which is pressed against the footplate in every position of the footplate by means of spring force
Data Source
Figure 1~2
Figure 3
AI summary
Gap-bridging device for a rail vehicle for bridging the gap between a platform and a floor of the rail vehicle, comprising a movably mounted footboard (1) and a cover plate (2) which is arranged above the footboard (1) and at least partially covers the footboard (1), wherein a scraper sheet (3) is provided which is fastened to an underside of the cover plate (2) and which is pressed onto the footboard (1) by means of spring force in every position of the footboard (1).