Rail Vehicle Anti-roll Device with Dynamic Coupling
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Solution Overview
Problem
Existing rail vehicles experience excessive torsional loads when navigating twisted or deformed track sections, leading to undesirable rolling movements and potential derailment risks, which current anti-roll devices fail to adequately mitigate without compromising their rolling movement-limiting effectiveness.
Innovation Solution
The anti-roll devices are designed and coupled such that they can actively adjust their displacements to compensate for vertical misalignments between car bodies, allowing them to follow the deformed track without introducing restoring forces, thereby reducing torsional loads and maintaining effectiveness in preventing rolling movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-roll devices are used to prevent rolling movements between car bodies, then driving comfort and derailment safety are improved, but excessive torsional loads are introduced into the car body when driving on twisted track sections
Solution Approach 1:
The anti-roll device is designed with a dynamic length adjustment mechanism that allows the distance between car bodies to be adaptively changed. When track twist is detected or anticipated, the device can extend or compress to accommodate the vertical misalignment, thereby preventing excessive torsional loads while maintaining roll stabilization effectiveness under normal conditions.
Solution Approach 2:
The invention changes the physical parameter of the anti-roll device length dynamically. By allowing the distance between car bodies to vary within a certain range, the system can adapt to different track conditions, reducing torsional stress on the car body structure while preserving the anti-roll function when needed.
2Stability of the object's composition
If anti-roll devices connect adjacent car bodies rigidly, then rolling movements are effectively prevented, but the car body cannot adapt to vertical misalignments on deformed track sections
Solution Approach 1:
The anti-roll device transitions from a rigid connection to a dynamic one with adjustable length. This allows the system to maintain roll stability through active control while adapting to vertical misalignments caused by track deformations, achieving both objectives simultaneously.
Solution Approach 2:
The coupling between car bodies is segmented into adjustable modules rather than a single rigid connection. This segmentation allows independent adjustment of the distance between car bodies, enabling adaptation to track conditions while maintaining overall structural integrity and roll stability.
Data Source
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AI summary
The invention relates to a vehicle, particularly a rail vehicle, comprising: a vehicle longitudinal axis (101.1); a first railway car body (102); a second railway car body (111) that is adjacent to the first railway car body (102) in the direction of the a vehicle longitudinal axis (101.1); a third railway car body (112) that is adjacent to the first railway car body (102) in the direction of the a vehicle longitudinal axis (101.1); a first anti-roll device (107) that connects the first railway car body (102) and the second railway car body (111), and; a second anti-roll device (108) that connects the first railway car body (102) and the third railway car body (112). The anti-roll device (107, 108) counteract rolling motions between the railway car bodies (102, 111, 112), which are connected via them, about a rolling axis parallel to the vehicle longitudinal axis (101.1), and the first anti-roll device (107) and the second anti-roll device (108) are coupled to one another via a coupling device (109). The anti-roll devices (107, 108) and the coupling device (109) are designed so that at least one first displacement on the first anti-roll device (107) causes at least one second displacement on the second anti-roll device (108).