Magnetic Pin Connector for Vibration-Resistant Rail Attachment
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Solution Overview
Problem
Current maintenance equipment for railway installations faces challenges in achieving robust mechanical and electrical connections on ferromagnetic supports, particularly due to positioning difficulties, wind interference, and vibration-induced device movement, which can lead to inaccurate measurements and safety risks.
Innovation Solution
A device utilizing permanent magnets and a housing design with a non-magnetic contact wall allows for secure mechanical and electrical connections by penetrating pins into the ferromagnetic support, providing a stable grip against vibrations and facilitating precise positioning through adjustable magnetic impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a worker positions a measuring device on a pole at height using magnetic attraction, then the device can be attached to the ferromagnetic support, but positioning errors occur due to weight and wind interference
Solution Approach 1:
The device separates the magnetic attachment function from the measurement function. The magnetic head with permanent magnets provides stable attachment to the ferromagnetic support, while the measuring device (inclinometer or voltmeter) is positioned separately, eliminating the influence of pole positioning errors on measurement accuracy.
Solution Approach 2:
The magnetic head acts as an intermediary between the worker and the ferromagnetic support. It provides a stable, vibration-resistant attachment point that is not affected by wind or worker handling, while allowing the measuring device to be positioned independently for accurate measurements.
2Ease of operation
If a device is secured to the upright by magnetic attraction, then the device can be easily attached and removed, but vibrations cause the device to move and fall
Solution Approach 1:
The permanent magnets are pre-positioned in the magnetic head to create a strong magnetic field that engages with the ferromagnetic support upon contact. This preliminary magnetic engagement ensures immediate and stable attachment, preventing vibration-induced movement while maintaining easy mounting and removal capabilities.
3Ease of operation
If a voltmeter is positioned manually on the rail to detect current, then the device can be placed on the rail, but corrosion layers prevent accurate electrical detection
Solution Approach 1:
The device replaces manual positioning and direct contact measurement with a magnetic field-based attachment system. The magnetic head securely attaches to the rail regardless of corrosion layers, and electrical connections are established through dedicated contact points that penetrate or bypass the corrosion layer, ensuring accurate current detection.
4Measurement precision
If workers check and reposition measuring devices frequently due to vibration-induced movement, then device position can be maintained, but intervention effectiveness is reduced and costs increase
Solution Approach 1:
Instead of trying to prevent vibrations from moving the device, the invention inverts the approach by designing a magnetic attachment system that actively resists vibrations. The permanent magnets in the magnetic head create a strong holding force that counteracts vibrational forces, eliminating the need for frequent checking and repositioning.
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 device ensures reliable mechanical and electrical connections, maintaining device position despite vibrations and wind, and allows for safe and precise electrical current detection, reducing maintenance costs and enhancing worker safety.
Implementation Method 1
a device for mechanical and/or electrical connection by magnetic effect between a ferromagnetic support (2) and an element (3) to be linked to the ferromagnetic support (2)
Implementation Method 2
when the magnet(s) move within the housing and impact the contact face or wall, the impact of the magnets on the contact wall generates a force that tends to drive the pins into the ferromagnetic support
Data Source
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AI summary
The invention relates to a device (1) for mechanical and/or electrical connection by magnetic effect between a ferromagnetic support and an element (3) to be linked to the ferromagnetic support, the device (1) comprising at least one permanent magnet, characterized in that the device (1) comprises a housing (4) including at least one housing, the permanent magnet(s) being movable in translation in the housing(s) between a base wall and a contact wall (43), and in that the contact wall (43) has points (7) projecting outwards from the housing, the points (7) being intended to pierce the ferromagnetic support by impact of the permanent magnet(s) on the contact face (43).