Railway Vehicle Front Flexible Shielding for Coupling Protection
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Solution Overview
Problem
Existing rail vehicle nose designs with train couplings face challenges in maintaining aerodynamics and preventing dirt, ice, and snow from entering the bow opening when the flaps are open, while also limiting the pivoting range and increasing complexity and costs due to large kinematic components.
Innovation Solution
A rail vehicle front end with a flexible shielding element, such as a sleeve or apron, is positioned between the front flaps and the train coupling to seal the gap between them when open, allowing for flexible deformation and complete closure of the front opening, ensuring protection against environmental influences and maintaining aerodynamic function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a fixed box or tarpaulin enclosure is used to protect the coupling, then protection against dirt, ice, and snow is improved, but the coupling's swivel range and the radius of curves the rail vehicle can negotiate are restricted
Solution Approach 1:
The patent employs a flexible gaiter made of textile or tarpaulin material that can deform and adapt to the coupling's movement. This flexible shell provides protection against environmental factors while allowing the coupling to pivot horizontally and vertically within the bow opening, thus maintaining both protection and mobility.
Solution Approach 2:
The gaiter is designed as a dynamic structure that moves and deforms with the coupling rather than being a fixed enclosure. This dynamic design allows the protective element to adapt to the changing position of the coupling during curve negotiation and height compensation movements.
2Object-affected harmful factors
If a permanently installed gaiter is used to protect the interior of the bow ring, then protection against environmental influences is improved, but the aerodynamic function of bow flaps is hindered
Solution Approach 1:
The protective system is segmented into two distinct parts: the bow flaps that maintain aerodynamic function and the gaiter that provides protection. The gaiter is positioned inside the bow opening and does not extend beyond the bow ring contour, allowing the bow flaps to move freely for aerodynamic purposes while the gaiter provides internal protection.
Solution Approach 2:
The gaiter is positioned in the internal space of the bow opening rather than extending externally. This dimensional placement allows the external aerodynamic shape to be maintained by the bow flaps while the protective function is provided internally by the gaiter, separating the two functions in different spatial dimensions.
3Shape
If bow flaps are used to close the bow opening, then aerodynamic function is improved, but dirt, ice, and snow can penetrate through the gap between the coupling and the bow ring when flaps are open
Solution Approach 1:
The gaiter acts as an intermediary protective element positioned between the coupling and the environment. When the bow flaps are open, the gaiter remains in place and provides the sealing function, while the bow flaps maintain their aerodynamic function. The gaiter mediates between the need for flap movement and the need for protection.
Solution Approach 2:
The gaiter is pre-installed and positioned within the bow opening before the bow flaps are opened. This preliminary placement ensures that protection is already in place when the flaps are opened, preventing dirt, ice, and snow from entering through the gap between the coupling and bow ring without requiring the flaps to remain closed.
Data Source
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AI summary
The invention relates to a front of a railway vehicle, comprising a tow coupling; a front ring surrounding a front opening in which the tow coupling is positioned; and at least one front hatch which can be moved between an open position in which it releases the front opening at least partially in order to provide access to the tow coupling, and a closed position in which it closes the front opening at least partially in order to cover the tow coupling. The front of the railway vehicle according to the invention is characterised in that at least one flexible shielding element, in particular a flexible cuff or panel (6), is provided between the at least one front hatch (4, 5) and the tow coupling (1), which covers an intermediate space between the tow coupling (1) and the at least one front hatch (4, 5) in the open position of the at least one front hatch (4, 5).