Deformable Roller Arm for Railway Switch Positioning
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Solution Overview
Problem
Existing roller maneuvering assistance systems for railway switches and crossings cannot be installed on existing infrastructure without modifying the sleepers or bearings, as they require new crosspieces or bearings, or drilling into existing ones.
Innovation Solution
A device comprising a first element with at least one roller and a deformable arm with a fixing interface that can be mounted on a sliding bearing, allowing for adjustable positioning and deformation to accommodate existing structures, enabling installation on existing switches and crossings without requiring new components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a binding positioning system for rollers is used with edge-based positioning, then the roller positioning accuracy is improved, but the device complexity and installation requirements increase, requiring new crosspieces or bearings or drilling into existing structures
Solution Approach 1:
The patent introduces a positioning element as an intermediary component that mediates between the roller and the bearing structure. This positioning element can be inserted into the gap between the bearing and the crosspiece without requiring modification of existing structures, thus achieving accurate roller positioning while avoiding the complexity of new crosspieces or drilling operations
Solution Approach 2:
The positioning element is designed as a thin, flexible component that can be inserted into the existing gap between the bearing and crosspiece. This thin-film approach allows the positioning function to be added without significantly increasing device complexity or requiring structural modifications
2Adaptability or versatility
If rollers are mounted on crosspiece structure to position fixing, then the roller positioning adaptability is improved, but the ease of operation deteriorates, as adjustment requires changing sleepers or bearings
Solution Approach 1:
The patent segments the positioning system into separate modular components: the positioning element, the roller, and the mounting structure. This segmentation allows the positioning element to be independently adjusted and replaced without affecting the bearing or sleeper structures, thereby improving both adaptability and ease of operation
Solution Approach 2:
The positioning element incorporates adjustable features that allow dynamic repositioning of rollers along the crosspiece. This dynamic adjustment capability enables the system to adapt to different needle widths and operational requirements while maintaining ease of installation and reconfiguration
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
Enables the installation of roller maneuvering assistance systems on existing railway switches and crossings without the need for new infrastructure, ensuring efficient operation and maintaining the structural integrity of the existing components.
Implementation Method 1
the arm being adapted to withstand a deformation in a plane comprising the bearing axis of an operating needle on the rollers
Data Source
Figure 1
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AI summary
Roller positioning device for a steering assistance system, comprising: - a first member (1) having at least a roller (2) to support a switch point, and - a second member forming an arm (3) comprising, at its end, an attachment interface (4) intended for fitting on a switch plate of the switch point, the arm (3) being suitable for withstanding a deformation in a plane comprising the bearing axis of the switch point on at least one roller (2).