Rail Support Assembly With Sliding Layer Against Spacer Pullout
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Solution Overview
Problem
Existing rail support systems face challenges during assembly and maintenance, particularly with soft spacers being pulled out during rail pulling due to high friction, leading to increased labor and wear, and reduced service life of intermediate layers.
Innovation Solution
A separately formed sliding layer with a lower coefficient of friction is introduced between the intermediate layer and the rail, which can be applied independently of the intermediate layer type, reducing friction and preventing displacement during assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If soft spacers are used to allow greater elastic deflection, then comfort and vibration damping are improved, but the spacers are pulled out during rail pulling due to high friction
Solution Approach 1:
The support system is divided into two functional layers: an intermediate layer (soft spacer) for elastic deflection and comfort, and a sliding layer for low-friction movement during rail pulling. This segmentation allows each layer to optimize its specific function without compromising the other.
Solution Approach 2:
The sliding layer acts as an intermediary between the rail and the intermediate layer, reducing friction during rail pulling while allowing the intermediate layer to maintain its elastic properties for comfort and vibration damping.
2Strength
If soft spacers are used, then vibration damping is improved, but material abrasion increases during operation
Solution Approach 1:
The system separates the vibration damping function (intermediate layer) from the friction-related wear function (sliding layer), allowing the soft intermediate layer to provide vibration damping while the sliding layer protects it from abrasion during rail pulling.
Solution Approach 2:
The sliding layer serves as a protective intermediary that reduces direct contact and friction between the rail and the intermediate layer, thereby minimizing material abrasion while allowing the intermediate layer to maintain its vibration damping properties.
3Stability of the object's composition
If a materially bonded connection between sliding layer and intermediate layer is made, then structural integrity is improved, but production complexity increases
Solution Approach 1:
The sliding layer and intermediate layer are manufactured separately and then assembled, allowing each component to be optimized independently for its specific function while simplifying the production process and enabling flexibility in material selection.
Solution Approach 2:
The separately produced sliding layer and intermediate layer are combined during assembly to form the complete support system, achieving structural integrity through their functional combination without requiring complex bonded connections during manufacturing.
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 sliding layer simplifies assembly, reduces material abrasion, and extends the service life of the intermediate layer by minimizing friction-related issues, allowing for easier installation and maintenance.
Implementation Method 1
the sliding layer, which has a lower coefficient of friction than the intermediate layer... the ratio of the friction coefficient of the sliding layer to the friction coefficient of the intermediate layer assumes a value of between 0.05 and 0.6
Implementation Method 2
soft spacers made of a rubber material instead of rigid or hard spacers, which allows for greater elastic deflection of the spacer
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
System (1) for supporting a rail on a sleeper (30), comprising - an intermediate layer (10), in particular a soft intermediate layer (20), and - a sliding layer (20), wherein the sliding layer (20) is formed separately from the intermediate layer (10) and is arranged in the assembled state along a stacking direction between the intermediate layer (10) and the rail.