Railway Switch Positioning System with Central Marker
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Solution Overview
Problem
Current methods for positioning railway switches are labor-intensive, time-consuming, and prone to errors due to indirect calculations and measurements, which can lead to inaccuracies and inefficiencies, especially in busy rail infrastructure like in the Netherlands and Western Europe.
Innovation Solution
A switch-positioning system comprising a rigid frame with a central positioning marker that is fastened to multiple points between two rails and sleepers, allowing for accurate and efficient positioning by making reference points from the design phase directly visible during construction, and enabling permanent or temporary attachment with communication capabilities for monitoring changes in switch geometry over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current indirect measurement and calculation methods are used for switch positioning, then the positioning process can be completed, but the positioning accuracy deteriorates due to accumulation of errors
Solution Approach 1:
The patent creates a physical copy of the design reference points by fabricating a frame with markers that replicate the theoretical positions defined in the design phase. This physical copy eliminates the need for indirect calculations during construction, as the markers directly indicate the correct switch position, thereby improving accuracy without increasing time loss.
Solution Approach 2:
The frame with positioning markers is prepared in advance during the design phase, before construction begins. This preliminary action ensures that accurate reference points are available from the start of construction, eliminating the need for time-consuming measurements and calculations during the actual positioning process.
2Manufacturing precision
If multiple measurement and calculation steps are performed during switch positioning, then positioning can be attempted, but the complexity of the positioning process increases
Solution Approach 1:
The patent extracts the essential reference information from the complex design calculations and embodies it in a simple physical frame with markers. This extraction simplifies the positioning process by removing the need for complex measurement and calculation procedures, while maintaining high precision through the physical markers.
3Device complexity
If a simple frame structure is used for positioning, then the device complexity is reduced, but the reliability of positioning deteriorates due to insufficient stabilization
Solution Approach 1:
The patent merges the frame structure with the existing rail fastening system by attaching the frame to the sleepers at multiple points using the same fastening infrastructure. This merging provides reliable stabilization without adding a separate complex support structure, maintaining simplicity while ensuring positioning reliability.
4Ease of operation
If the frame is fastened to only one sleeper, then the ease of installation is improved, but the stability of the frame deteriorates
Solution Approach 1:
The patent applies different fastening qualities at different locations of the frame. The frame is fastened to multiple sleepers at specific critical locations to provide maximum stability where needed, while maintaining overall simplicity of installation. This localized approach to fastening ensures stability without uniformly complicating the installation process.
Data Source
Figure 1~2
Figure 3
AI summary
A system (260) for accurately positioning railway switches, comprising a frame (261) made of a rigid structure, which frame is fastenable between two rails (320A, 320B) of the switch in such a way that it extends between the two rails during use, and wherein the frame is provided with a central positioning marker (264) which, during use, is situated on the centre line of the track which is formed by the two rails (320A, 320B), and wherein the frame (261) is configured to be fastened to at least one sleeper (310) at at least two locations on either side of the two rails.