Rail Vehicle Driver's Desk Crash Absorbing Frame
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Solution Overview
Problem
Modern rail vehicles with aesthetically designed fronts, especially those with emergency exit doors at the front, face challenges in absorbing longitudinal compressive forces during collisions due to space constraints, as traditional reinforcement methods like reinforced window sills and pile drivers are not feasible.
Innovation Solution
A rail vehicle with crash equipment featuring a detachably connected driver's desk having a reinforced frame that absorbs and transmits longitudinal compressive forces, eliminating the need for pile drivers and reinforced window parapets, utilizing a screw connection and force introduction devices like wedges to distribute forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional reinforcement methods (pile drivers, reinforced window sills) are used to absorb longitudinal compressive forces, then crash safety is improved, but device complexity and space requirements increase
Solution Approach 1:
The driver's desk is divided into modular components (front desk portion, rear desk portion, side desk portions) that can be separately manufactured and assembled. This segmentation allows the crash-absorbing structure to be integrated into the driver's desk itself rather than requiring separate reinforcement components like pile drivers or reinforced window sills, thereby maintaining crash safety while reducing overall structural complexity.
Solution Approach 2:
The driver's desk serves multiple functions: it provides the operational control interface for the driver and simultaneously functions as a crash-absorbing structural element. The reinforced frame of the driver's desk is designed to absorb and transmit longitudinal compressive forces during collisions, eliminating the need for dedicated reinforcement components and reducing device complexity while maintaining reliability.
2Reliability
If traditional reinforcement methods are used, then crash safety is improved, but manufacturing time and production efficiency worsen
Solution Approach 1:
The driver's desk is pre-assembled and pre-tested as a complete module before being installed in the vehicle. The reinforced frame structure is manufactured and configured in advance with all necessary crash-absorbing features integrated, allowing for preliminary quality control and testing. This preliminary action enables parallel production activities and reduces on-site assembly time, significantly improving production efficiency while maintaining crash safety standards.
Solution Approach 2:
By segmenting the driver's desk into manufacturable modules that can be produced independently and assembled beforehand, the invention enables concurrent engineering and manufacturing processes. The modular driver's desk can be manufactured in a controlled environment with optimized production workflows, then quickly installed in the vehicle, thereby improving overall productivity without compromising the integrated crash-absorbing functionality.
3Shape
If aesthetically designed fronts with emergency exit doors are used, then design quality is improved, but the ability to provide traditional reinforcements worsens
Solution Approach 1:
The driver's desk is designed as a multi-functional component that simultaneously achieves aesthetic design requirements and crash-absorbing functionality. The reinforced frame is integrated into the driver's desk structure itself, allowing modern vehicle fronts with emergency exit doors to maintain their aesthetic appearance while providing the necessary crash protection without requiring additional visible reinforcement components.
Solution Approach 2:
The reinforcement is localized to the driver's desk structure where it is most needed for crash absorption, rather than requiring continuous reinforcement of the entire window sill or body structure. The reinforced frame of the driver's desk provides concentrated structural strength at the critical impact zone, enabling aesthetically pleasing vehicle fronts with emergency exit doors to meet crash safety requirements without compromising ease of manufacture.
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 solution allows for efficient absorption of longitudinal forces without significant structural modifications to the underframe, enabling the production of crash-worthy vehicles with favorable design aesthetics, particularly in vehicles where traditional reinforcements are impractical, and accelerates production by allowing separate testing and assembly of the driver's desk.
Implementation Method 1
A force applied to the upper edge of the driver's desk in the longitudinal direction of the rail vehicle is introduced into the underframe, with the force introduced being converted, according to the law of levers, into a downward force on the vehicle's central edge of the driver's desk and an upward (lifting) force on the front edge Divides the edge of the driver's desk
Implementation Method 2
The detachable attachment of the driver's desk or the driver's desks is preferably effected by means of a screw connection
Data Source
AI summary
The invention relates to a rail vehicle having crash equipment, comprising an underframe (2) and a driver's cab, wherein at least one control panel (1) is provided, which is detachably connected to the underframe (2) and which comprises a reinforced frame for absorbing the longitudinal compressive forces (F1, F2) occurring during a collision and transmitting said longitudinal compressive forces to the underframe (2).