Railcar Gangway Spring Layout for Self-Returning Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Gangways connecting cars in multi-car vehicles face challenges in returning to a normal position after navigating bends, as existing elastic connection elements influence their alignment and stability.
Innovation Solution
Incorporating a spring element with non-parallel connections between key elements of the gangway, such as vehicle mounting plates and frames, to introduce restoring forces that facilitate the gangway's return to a preferred shape and alignment when cars are in a straight line configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a connection element elastically connects the frames of the gangway, then the gangway can adapt to relative position changes between cars, but the gangway's ability to return to a normal position after navigating bends is compromised
Solution Approach 1:
The gangway is divided into multiple independent frames (first frame, second frame, third frame) connected by elastic connection elements. This segmentation allows each frame to move independently while maintaining overall structural integrity, enabling the gangway to adapt to relative position changes between cars while preserving stability through the distributed elastic connections.
Solution Approach 2:
The elastic connection elements change their mechanical parameters (flexibility, stiffness) based on the operational state. During normal operation, they provide sufficient elasticity for position adaptation, while during bending recovery, the geometric arrangement of the frames and connection elements creates restoring forces that return the gangway to its normal alignment.
2Ease of operation
If the gangway uses existing elastic connection elements between frames, then flexibility is improved, but proper alignment and stability when cars are in a straight line configuration deteriorates
Solution Approach 1:
The elastic connection elements are arranged in an asymmetric geometric configuration between the frames. This asymmetric arrangement creates directional restoring forces that specifically act to return the gangway to its normal aligned position after bending, while still allowing flexibility during normal operation. The non-uniform distribution of elastic connections provides both flexibility and alignment precision.
3Device complexity
If the gangway structure is simplified without additional alignment mechanisms, then device complexity is reduced, but the ability to return to normal position after bends is insufficient
Solution Approach 1:
The gangway structure is designed to be self-aligning through the geometric arrangement of its frames and elastic connection elements. The restoring forces required to return the gangway to its normal position are generated automatically by the elastic connections themselves during the bending and recovery process, without requiring external alignment mechanisms or additional active control systems.
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 design enhances the gangway's ability to return to a normal position, ensuring proper alignment and stability when cars are in a straight line, improving the overall performance and usability of multi-car vehicle systems.
Implementation Method 1
a spring element (14) connected with a first end (15) to a first connection point (16) on the first element and connected with a second end (17) to a second connection point (18) on the second element
Data Source
AI summary
A gangway for connecting a first car of a multi-car vehicle to a second car, the gangway having a first element and a second element of a group of elements comprised of a first vehicle mounting plate at a first end for mounting the gangway to the first car, a second vehicle mounting plate at a second end for mounting the gangway to the second car, a center frame and a hoop between the first and second vehicle mounting plates, whereby the gangway has a normal position in which the first element has a predefined position relative to the second element, a spring element is connected to a first connection point on the first element and to a second connection point on the second element, whereby in the normal position of the gangway the first connection point is at a different height compared to second connection point, and/or is arranged either further outward or further inward than the second connection point.