A gauge block for preventing stray currents

By setting a double-layer insulating and wear-resistant layer on the gauge block and coating its surface with a hydrophobic and oleophobic layer, the problem of insufficient insulation performance of the gauge block is solved, thus protecting the rail pad, reducing maintenance costs and safety risks, and ensuring the stability of the track system.

CN224431153UActive Publication Date: 2026-06-30GUANGDONG SUNLITE SCI & TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG SUNLITE SCI & TECH CO LTD
Filing Date
2025-07-25
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the design and manufacturing process of existing gauge blocks, mechanical strength is mainly considered while insulation performance is neglected. This results in current leakage through the gauge blocks during train operation, forming stray currents that corrode the steel reinforcement of the rail pads, increasing maintenance costs and safety risks.

Method used

The design employs a double-layer insulating and wear-resistant layer, which is used to isolate the gauge block body from the rail and the gauge block body from the rail pad. A hydrophobic and oleophobic coating is applied to the surface of the insulating layer to block the current conduction path and prevent the formation of stray current.

Benefits of technology

It effectively improves the insulation performance of the gauge block, prevents current leakage, protects the strength and life of the rail pad, reduces maintenance costs and safety risks, and ensures the long-term stable operation of the track system.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224431153U_ABST
    Figure CN224431153U_ABST
Patent Text Reader

Abstract

This utility model relates to the field of track insulation technology and discloses a gauge block for preventing stray currents. It includes a gauge block body that is pressed against a rail by a clamping seat, and further includes a first insulating wear-resistant layer and a second insulating wear-resistant layer. The first insulating wear-resistant layer is located on the side of the gauge block body closest to the rail and abuts against the side of the rail, serving as an isolation between the gauge block body and the rail. The second insulating wear-resistant layer is located on the side of the gauge block body closest to the clamping seat and abuts against the side of the clamping seat, serving as an isolation between the gauge block body and the clamping seat. The first and second insulating wear-resistant layers are symmetrically distributed on the gauge block body. All or part of the surfaces of the first, second, and gauge block bodies are coated with a hydrophobic and oleophobic coating. By providing the first and second insulating wear-resistant layers, which respectively isolate the gauge block body from the rail and the rail pad, the overall insulation performance is improved.
Need to check novelty before this filing date? Find Prior Art