Rail Sensor Clamping Bracket for Variable Rail Foot Widths

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Solution Overview

Problem

Railway systems face challenges in attaching sensors to railroad tracks due to varying rail foot widths, leading to the need for multiple fastening devices or complex adjustments, which increases product variety or structural complexity.

Innovation Solution

A fastening device with clamping brackets and a clamping force mechanism that allows for easy attachment of sensors to railroad tracks without requiring adjustments for different rail widths, utilizing a non-positive fit and elastic deformation for secure fixation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If different fastening devices are used for different rail foot widths, then the sensor can be securely fastened to various rail types, but the number of products increases

Engineering Contradiction:
Improvecompatibility with different rail foot widthsVSAvoidnumber of product variants
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fastening device uses a universal clamping bracket design that can accommodate different rail foot widths through adjustment mechanisms. The clamping bracket includes adjustable elements that allow it to adapt to various rail dimensions, enabling a single product design to serve multiple rail types rather than requiring separate fastening devices for each rail width specification.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The fastening device incorporates adjustable and movable components that allow dynamic adaptation to different rail foot widths. The clamping mechanism can be adjusted during installation to match the specific rail dimensions, providing versatility without requiring multiple fixed-design products. This dynamic adjustability resolves the contradiction by enabling one product to fulfill multiple fastening requirements.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If adjustment options are provided in the fastening device for different rail foot widths, then the sensor can be fastened to various rail types, but the structural complexity increases

Engineering Contradiction:
Improveadjustability to different rail foot widthsVSAvoidstructural complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fastening device is divided into modular components, with the clamping bracket as a separate adjustable element. This segmentation allows the adjustment mechanism to be isolated to specific parts rather than requiring complex integration throughout the entire structure. The modular design enables adaptability while keeping overall structural complexity manageable by localizing the adjustment functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fastening device employs dynamic adjustment mechanisms that allow structural adaptation without requiring permanently complex designs. The adjustment capabilities are integrated in a way that maintains relative structural simplicity while providing the necessary versatility for different rail foot widths.

Inventive Principle:
Principle #15Dynamics

3Device complexity

If a single fastening device design is used for all rail foot widths, then the product structure remains simple, but the device cannot accommodate different rail dimensions

Engineering Contradiction:
Improvestructural simplicityVSAvoidcompatibility with different rail foot widths
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The fastening device achieves universality through its clamping bracket design that can accommodate multiple rail foot width specifications. The bracket incorporates adjustment capabilities that allow it to function with various rail dimensions while maintaining a relatively simple overall structure, thus providing multi-functionality without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The fastening device allows for parameter changes in the clamping bracket configuration to adapt to different rail foot widths. By enabling adjustment of key dimensional parameters of the bracket, the device can accommodate various rail dimensions while maintaining structural simplicity through a standardized base design that requires only parameter adjustment rather than complete redesign for each application.

Inventive Principle:
Principle #35Parameter changes

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 enables simple and secure sensor attachment to railroad tracks, reducing product complexity and eliminating the need for adjustments, while allowing for flexible clamping force distribution and easy assembly and transport.

Implementation Method 1

the tensioning device can be formed by the tensioning bracket itself, which is elastically deformed during assembly, for example, and then compresses the tensioning areas and the assembly of sensor and railway rail like a spring

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP3420134B1Fastening device and method for fastening at least one sensor to a railway rail
Publication Date: 2021.01.27 SIEMENS MOBILITY GMBH
  • EP3420134B1 patent drawingFigure 1
  • EP3420134B1 patent drawingFigure 2~3
  • EP3420134B1 patent drawingFigure 4~5

AI summary

The invention relates to a fastening device (1) and to a method for fastening at least one sensor (10) to a railway rail (5), wherein the fastening device (1) comprises at least one clamping bow (2), at least two opposite clamping regions (3) connected to the clamping bow (2), between which clamping regions the at least one sensor (10) and at least part of the railway rail (5) can be arranged and a clamping force (F) that fastens the at least one sensor (10) can be applied, and at least one clamping device (4), which is connected to the clamping bow (2) and by means of which the clamping force (F) can be applied.