Retractable Rail Support Elements for Train Wheel Clearance
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Solution Overview
Problem
Existing systems for moving along rails face challenges in safely and efficiently navigating around train wheels without interfering with their operation, as they often require support structures that must engage and disengage from the rail surface synchronously with passing wheels.
Innovation Solution
A system with support structures that have operative and inoperative positions, where the support elements can move relative to the frame using drive elements, allowing them to extend beyond the rail axis when engaged and retract when not in use, ensuring the system remains supported by the rails while allowing train wheels to pass without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If support structures engage the rail surface continuously, then the system maintains stable support along the rails, but train wheels cannot pass without interfering with the support structures
Solution Approach 1:
The support structures are designed to be dynamically movable between an engaged position (extending beyond the rail axis) and a retracted position (within the rail axis). This dynamic capability allows the system to switch between providing stable support and allowing wheel passage, resolving the contradiction between continuous support and wheel interference prevention
Solution Approach 2:
The support system is divided into multiple independent support structures distributed along the rails. Each support structure can independently transition between engaged and retracted states, allowing selective engagement that maintains overall system stability while creating clear paths for wheels to pass through
2Strength
If support structures are positioned to engage the rail surface, then the system remains supported between the rails, but the support structures interfere with passing train wheels
Solution Approach 1:
The support structures incorporate drive elements that enable active control of their position. They can extend beyond the rail axis to provide strong support when needed, and retract within the rail axis to eliminate obstruction when wheels approach, dynamically balancing support capability with wheel clearance
Solution Approach 2:
The connection elements act as intermediaries between the frame and support structures, providing the mechanical linkage that allows support structures to move between engaged and retracted positions while maintaining connection to the frame, thus enabling both support and clearance functions
3Device complexity
If support structures remain stationary relative to the frame, then the system structure is simple, but the system cannot dynamically avoid train wheels
Solution Approach 1:
The system transforms from a static structure to a dynamic one by incorporating movable support structures with drive elements. This adds the adaptability needed to respond to passing wheels while maintaining a relatively simple overall structure through modular design of the support structures
Solution Approach 2:
The support structures are equipped with drive elements that enable them to autonomously transition between engaged and retracted positions based on operational needs, allowing the system to self-adjust to avoid wheels without requiring complex external control mechanisms
Data Source
AI summary
A system for moving below a train, wagon or car, the system having a plurality of support elements each resting on one or the two rails, the support elements being retractable when a train wheel passes, so that the support elements sequentially retract to allow the wheel to pass the system.