Inflatable Pad for Train Coupler-Head Snow Removal
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Solution Overview
Problem
Existing coupler-head designs for trains face challenges in reducing snow accumulation on their surfaces or in recesses, which can impede operability, especially when retractable covers are hindered by snow or ice.
Innovation Solution
An inflatable chamber pad is attached to the coupler-head, which inflates and deflates to dislodge snow or ice, utilizing shape change to eject accumulated material and repeatedly inflate/deflate to maintain effectiveness over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a retractable cover is used to protect the coupler-head surface, then the surface is protected from snow accumulation, but the cover itself becomes blocked by snow and ice preventing full retraction
Solution Approach 1:
The pad employs an inflatable chamber that can dynamically change its volume between deflated and inflated states. This dynamic transformation allows the pad to adapt to different operational conditions - remaining deflated during normal operation to minimize snow accumulation, and inflating when snow removal is needed to dislodge accumulated snow and ice from the coupler-head surface.
Solution Approach 2:
The system implements periodic inflation and deflation cycles of the inflatable chamber. By repeatedly inflating and deflating the pad at appropriate intervals, the system maintains continuous snow removal effectiveness. The periodic action ensures that snow accumulation is prevented from becoming permanent, as the repeated volume changes continuously disrupt and remove accumulated material.
2Object-affected harmful factors
If the inflatable chamber is inflated to crack and eject snow, then snow accumulation is reduced, but the chamber volume increases temporarily
Solution Approach 1:
The inflatable chamber transitions between deflated and inflated states dynamically. During normal operation, the chamber remains deflated to maintain a compact form factor. When snow removal is required, the chamber is inflated to generate the necessary force to crack and eject snow, then deflated again afterward. This dynamic volume change allows the system to achieve snow removal effectiveness without permanently increasing the chamber volume.
Solution Approach 2:
The periodic inflation and deflation cycles allow the chamber to temporarily increase in volume only when needed for snow removal. The repeated cycling ensures that the chamber returns to its compact deflated state after each snow removal operation, maintaining the overall compactness of the coupler-head assembly while achieving continuous snow removal effectiveness.
3Object-affected harmful factors
If the pad is repeatedly inflated and deflated, then snow removal effectiveness is enhanced, but energy consumption increases
Solution Approach 1:
The system employs periodic inflation and deflation cycles rather than continuous operation. By timing the inflation events to occur only when snow accumulation reaches problematic levels, the system minimizes energy consumption while maintaining effective snow removal. The periodic action allows the system to achieve snow removal effectiveness without the continuous energy demand of constant inflation.
Solution Approach 2:
The pad design allows the inflatable chamber to be inflated and deflated using the train's existing pneumatic system, leveraging the available compressed air resources. This self-service approach enables the pad to utilize the train's infrastructure for its operational needs, reducing the requirement for dedicated energy consumption and minimizing additional energy requirements.
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
The inflatable pad effectively reduces snow accumulation by cracking and removing snow/ice upon inflation, and repeated cycles enhance snow removal, ensuring the coupler-head remains operational even in snowy conditions.
Implementation Method 1
the change of shape of the inflatable chamber will lead to snow being moved off the outward facing surface
Implementation Method 2
The inflation of the chamber and hence the change of shape of the chamber itself can already create a force that ejects the accumulated snow from the outward facing surface
Implementation Method 3
it is suggested to repeatedly inflate and deflate the inflatable chamber. This will lead to a repeated change of shape of the inflatable chamber, which will increase the positive effect of the concept according to the invention
Data Source
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AI summary
The invention relates to a pad suitable to reduce the accumulation of snow on a surface of or in a recess of a coupler-head of a train, when the pad is attached to the coupler-head having an inflatable chamber.