Elastomeric Wheelset Shaft Protection Against Collision Damage
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Solution Overview
Problem
Existing protective devices for rail vehicle wheelset axles are insufficient in providing effective and cost-effective protection against damage from collisions, leading to frequent repairs and increased maintenance costs due to corrosion and cracking.
Innovation Solution
A protective device comprising an elastomeric mat and a rigid housing that can be easily attached to the wheelset axle, distributing collision kinetic energy and preventing direct contact, with the housing absorbing energy before it is damped by the elastomer mat, thereby reducing damage risk and maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing protective devices (banderole, shock plates, or known protective tubes) are used, then some protection is provided, but they are insufficient to ensure effective protection against collision damage
Solution Approach 1:
The protective device combines an elastomeric mat material with a housing structure to create a composite protective system. The elastomeric mat provides energy absorption through elastic deformation, while the housing provides structural protection and directs collision forces. This composite approach achieves superior protection effectiveness compared to single-material solutions while maintaining reasonable device complexity.
Solution Approach 2:
The elastomeric mat is positioned between the collision object and the wheelset axle to absorb collision energy before it reaches the critical shaft components. This beforehand cushioning prevents direct contact between collision objects and the axle, protecting against damage before it occurs.
2Reliability
If complex coating processes are used to protect the wheelset axle, then corrosion protection is improved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The protective device uses relatively simple, inexpensive materials (elastomeric mat and housing) that can be easily manufactured and replaced if needed. This approach trades the complexity of multi-step coating processes for a simpler, more cost-effective protective structure that provides both mechanical and corrosion protection.
Solution Approach 2:
The elastomeric mat serves as an intermediary layer between the collision environment and the wheelset axle, providing both mechanical shock absorption and corrosion protection. This intermediary protects the critical shaft components from direct exposure to harmful environmental factors.
3Ease of operation
If the protective device is designed to be easily attached and dismantled, then maintenance time is reduced, but the structural integrity and protection effectiveness may be compromised
Solution Approach 1:
The protective device is segmented into distinct components (elastomeric mat and housing) that can be independently assembled and disassembled. The housing can be easily removed to access the axle for maintenance, while the elastomeric mat can be replaced independently. This segmentation enables quick maintenance operations while maintaining full protection effectiveness when assembled.
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 solution extends the service life of the wheelset axle, reduces maintenance costs, and provides complete protection with easy assembly and disassembly, suitable for high-speed rail vehicles.
Implementation Method 1
The kinetic energy of a collision body, which is to be absorbed by the wheelset axle in the event of a collision by the protective device according to the invention, is elastically damped by the elastomer mat and is thus distributed over a larger area.
Implementation Method 2
The kinetic energy of the collision body is first absorbed by the dimensionally stable housing and only then introduced into the elastomer mat and dampened by it, so that the risk of damage to the elastomer mat is reduced.
Data Source
AI summary
In order to protect the wheel set shaft (2) of a rail vehicle in an effective and economical manner, according to the invention a device (1) is used, which comprises an elastomeric mat (3) which can be easily placed on the wheel set shaft and retaining means (11) for retaining the elastomeric mat (3) on the wheel set shaft.