Description
Technical Parameters
Key Components
| Component | Function | Common Types |
|---|---|---|
| Rail Clip | Clamps the rail base to the sleeper (e.g., Pandrol clip, Nabla clip). | Elastic (spring) clips, rigid clips |
| Baseplate | Distributes load and provides rail inclination (e.g., Zwergschwelle plate). | Flat, inclined, or anti-vibration designs |
| Fastening Bolts | Secures clips/plates to sleepers (e.g., hook bolts, screw spikes). | M24, M30 (metric) or AREMA-standard |
| Insulators | Electrically isolates rails (for track circuits). | Nylon, composite materials |
| Pads | Reduces vibration/noise between rail and sleeper. | Rubber, EVA, or polyurethane pads |
Standards & Applications
| Standard | Region/Use Case | Example Fasteners |
|---|---|---|
| EN 13481 | Europe (high-speed rail) | Vossloh 300, Pandrol Fastclip |
| AREMA | North America (heavy haul) | Elastic spike, cut spike |
| TB/T | China (GB standards) | WJ-7, WJ-8 (for HSR) |
| JIS | Japan (Shinkansen) | Nabla clip, DE-type fastener |
A railway fastening system is a set of components designed to securely fix rails to sleepers (ties) while allowing for thermal expansion, vibration damping, and maintenance adjustments.
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