Central Lifting Device for Railway Track Bridges
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Solution Overview
Problem
Existing underfloor rail vehicle lifting systems require significant structural and economic effort, making them costly and inefficient for lifting heavy train parts, and often necessitate multiple lifting devices for reliable support.
Innovation Solution
A central lifting device is used instead of separate devices at each corner, supported by extendable arms, with a spindle and lifting nut design for reliable operation and low material usage, and a fixed track bridge with a height-adjustable cantilever to manage high loads without tilting, and a spring-loaded cover for automatic pit closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate lifting devices are used at each corner of track bridges, then reliability of support is improved, but device complexity and material costs increase
Solution Approach 1:
The patent combines multiple lifting functions into a single central lifting device. Instead of using separate lifting devices at each corner of the track bridges, one lifting device performs all lifting operations by coordinating support arm movements, thereby reducing device complexity while maintaining lifting capability
Solution Approach 2:
The support arms are designed to be dynamically adjustable in position and angle. They can extend and retract, and change their orientation to reach different positions under the track bridges, allowing a single static lifting device to perform multiple lifting positions dynamically
2Stability of the object's composition
If multiple separate lifting devices are used at each corner of track bridges, then support stability is improved, but material costs and structural effort increase
Solution Approach 1:
The patent merges multiple lifting devices into one central unit, significantly reducing the total amount of structural material required. The single lifting device with multiple adjustable support arms uses less material than four separate lifting devices would require, while still providing stable support for track bridges
Solution Approach 2:
The dynamic adjustability of support arms allows them to optimize their position for each lifting task, distributing loads efficiently and maintaining stability without requiring excessive structural reinforcement that would increase material costs
3Device complexity
If a central lifting device with extendable arms is used, then material costs and device complexity are reduced, but reliability of support for heavy loads may be compromised
Solution Approach 1:
The support arms can dynamically adjust their position, angle, and extension length to optimize the lifting configuration for each specific load. This dynamic adaptability allows the single lifting device to reliably support heavy loads by distributing forces optimally across multiple contact points under the track bridges
Solution Approach 2:
The support arms can be positioned at different locations under the track bridges depending on the specific lifting requirements. This local adaptability allows the system to provide reliable support tailored to each specific load position and weight distribution
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 reduces material costs and operational complexity, ensuring reliable and stable lifting of heavy loads with minimal tilting risk, while maintaining system safety and precision, and allows for efficient installation in railway depots.
Implementation Method 1
The lifting device can have a lifting element, which is designed as a spindle with an associated lifting nut
Implementation Method 2
a spring-loaded cover for automatic pit closure
Data Source
AI summary
Underfloor railway vehicle lifting system (1) has a track bridges (11) provided in a track, with a lifting device, which has upward and downward movable support elements. The support elements are arranged under the track bridges, in such a way, that the track bridges including the traction part can be lifted. The lifting device has a central lifting element from which extends a lifting structure equipped with support and is arranged under two track bridges parallel to each other.