Rail Vehicle Front Flap Synchronization
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Solution Overview
Problem
Jamming of front hatches in rail-bound vehicles occurs due to uneven travel paths of support elements in guide systems, leading to potential blocking during retraction, which is exacerbated by limited space constraints and friction conditions.
Innovation Solution
A synchronization device is implemented to synchronize the travel paths of support elements, using flexible tension elements like Bowden cables or toothed belts to ensure equal displacement, preventing skewed positions and jamming, and can be integrated in a space-efficient manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple guides are used to hold the front hatch, then the front hatch can be guided along a travel path, but deviations in force application cause tilting and jamming in the guides
Solution Approach 1:
The patent combines multiple guides into a single guide structure that accepts multiple support elements. This merging approach ensures that all support elements follow the same travel path without deviating, eliminating the tilting and jamming problems that occur when multiple separate guides are used. The single guide structure provides a unified constraint that prevents skewed positioning of the front hatch.
2Reliability
If support elements are positioned at a distance from each other transversely, then the front hatch can be guided, but unequal travel paths cause skewed positions and jamming
Solution Approach 1:
The patent incorporates a synchronization device that provides feedback on the relative positions of support elements and adjusts their movement accordingly. This feedback mechanism ensures that all support elements traverse equal paths despite being positioned at different locations, preventing skewed positions and jamming by continuously monitoring and correcting travel path deviations.
3Volume of moving object
If the installation space at the front is limited due to deformation systems and automatic coupling, then the vehicle design is compact, but the space for guide systems is restricted
Solution Approach 1:
The patent nests the guide system within the existing front structure by positioning the single guide alongside the deformation systems and automatic coupling. The guide structure is integrated into the available space without requiring additional volume, effectively utilizing the limited front space while maintaining guiding functionality. This nesting approach allows the guide system to coexist with other front-mounted components without increasing overall vehicle length.
Data Source
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AI summary
The invention relates to a front flap assembly for a railbound vehicle, comprising: at least one front flap, which is suspended for sliding between a retracted position and an extended position; at least two guides, which retain the front flap and which guide respective carrier elements connected to the front flap for retraction and extension along respective travel paths and which are positioned at a distance from one another perpendicularly to a sliding direction of the front flap. The front flap assembly according to the invention is characterized in that a synchronization device is provided, which acts on the carrier elements and/or the front flap in such a way that the travel paths are synchronized.