Vibration-Damped Rail Sensor Mounting
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Solution Overview
Problem
Existing fastening devices for switching and sensor units on rails are complex, prone to mechanical vibrations, and inefficient in terms of manufacturing and assembly, leading to reduced durability and increased construction volume, which compromises the reliability and accuracy of the units.
Innovation Solution
A vibration-damped fastening device comprising a first fastening element attached to the rail, a second holding element for the unit, and a damping element connecting them, utilizing an elastic polymer for effective decoupling and simplified assembly, with a cylindrical design for strength and material efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-part fastening device with complex assembly is used to attach a switching or sensor unit to a rail, then the attachment can be achieved, but the device complexity increases and manufacturing becomes more difficult
Solution Approach 1:
The patent combines multiple fastening functions into a single integrated fastening element that directly attaches the switching or sensor unit to the rail, eliminating the need for separate brackets, bolts, and other auxiliary components. This merging of functions reduces device complexity while maintaining secure attachment reliability.
Solution Approach 2:
The fastening element is designed to perform multiple functions simultaneously: mechanical attachment to the rail, vibration damping, and structural support for the switching or sensor unit. This multi-functionality eliminates the need for separate specialized components, simplifying the overall device structure.
2Reliability
If conventional fastening methods are used to attach a switching or sensor unit to a rail, then the unit can be secured, but the unit is exposed to considerable mechanical vibrations when a rail vehicle drives past
Solution Approach 1:
The patent introduces a damping element as an intermediary between the fastening element and the switching or sensor unit. This damping element absorbs and attenuates mechanical vibrations from the rail before they reach the sensitive electronic components, protecting the unit while maintaining secure attachment.
Solution Approach 2:
The damping element is pre-installed as part of the fastening device assembly, providing vibration protection before the switching or sensor unit is subjected to operational vibrations. This beforehand cushioning prevents vibration-induced damage before it occurs.
3Object-affected harmful factors
If elastic compound encasing is used to protect vulnerable components, then some vibration protection is achieved, but the construction volume increases and manufacturing becomes more complex
Solution Approach 1:
The patent extracts the vibration protection function from the housing structure and implements it separately through the damping element in the fastening device. This separation allows the housing to remain compact while still providing adequate vibration protection through the specialized damping component.
Solution Approach 2:
The damping element functions as a flexible vibration-isolating layer that provides protection without requiring substantial additional volume. The thin-film or layered structure of the damping material offers effective vibration attenuation while maintaining a compact overall device size.
4Strength
If welding or riveting is used to attach the fastening device to the rail, then strong attachment is achieved, but the device cannot be detached easily and thermal destruction risk increases
Solution Approach 1:
The patent replaces permanent thermal connection methods (welding, riveting) with a mechanical fastening system that uses a fastening element with threaded engagement. This mechanical system provides sufficient attachment strength while allowing for easy detachment and repositioning when needed for maintenance or track preparation.
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 achieves significant mechanical decoupling, enhancing the service life of the units, allowing for easier maintenance and installation, while maintaining sensor accuracy and minimizing construction volume.
Implementation Method 1
a damping element (6), the first (2) and the second (4) fastening element are connected to one another by means of the damping element (6) arranged between them
Implementation Method 2
Device for the vibration-damped attachment of a switching or sensor unit to a rail
Data Source
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AI summary
The invention relates to a device for vibration-damped mounting of a switching or sensor unit (22) on a guide rail (3). With the aim of providing such a device to decouple a wheel sensor from the rail in terms of vibration and to advantageously further develop a mounting device for rail elements in such a way that it is simple and cost-effective to manufacture and assemble, and that the reliability and durability of the transmitters and measuring devices to be mounted are improved while simultaneously requiring the smallest possible installation volume, a first mounting element (2) is provided which can be attached to the guide rail (3), a second mounting element (4) for holding the switching or sensor unit (22), and a damping element (6), wherein the first and the second mounting elements (2; 4) are connected to each other by means of the damping element (6) arranged between them.