Description
Technical Parameters
Railway Track Clamps & Fasteners Specification
| Clamp Name / Type | Primary Function & Application | Key Features & Description |
|---|---|---|
| Rail Clips (Elastic Fasteners) | To clamp the rail foot to the sleeper, providing longitudinal and lateral restraint while allowing for thermal expansion. | Most common type of "clamp." Made from spring steel. Provides a constant holding force, dampens vibrations, and is highly durable. |
| Fishplate Clamps (Bolt Hole Clamps) | To temporarily clamp two rails together at the joint during welding, thermit welding, or for emergency repairs. | Used for alignment. They hold the rail ends level and tight to ensure a perfect weld or secure joint before permanent fastening. |
| Guard Rail Clamps | To fasten guard rails (check rails) to the sleepers in tight curves, crossings, or bridges. | Often a heavier-duty version of a standard rail clip or a specific design to accommodate the extra rail. Ensures correct gauge between running rail and guard rail. |
| Check Rail Clamps | Similar to guard rail clamps, used to secure check rails in switches and crossings (S&C). | Designed to fit the specific sleeper and rail profile used in complex trackwork like frogs and crossings. |
Key Concepts:
- Elastic Fastening System: This is the modern standard. Clips like the Pandrol clip or Nabla clip are pre-tensioned to act like a spring, maintaining constant pressure on the rail foot. This system absorbs energy, reduces vibration, and handles dynamic loads far better than rigid fastenings.
- Application-Specific: The correct clamp is chosen based on:
- Sleeper Type: Concrete, wood, or steel.
- Rail Profile: The size and shape of the rail foot (e.g., UIC 60, AREMA 115RE, BS 113A).
- Location: Mainline, curves, switches, bridges, or tunnels.
- Requirements: Electrical insulation, level of restraint, or maintenance needs.
- Standards: All clamps are manufactured to strict international (e.g., EN standards European Norm) or national (e.g., AREMA American Railway Engineering and Maintenance-of-Way Association) standards to ensure safety and performance.
gnee-professional supplier
Hot Tags: railway crane rail clamp, China railway crane rail clamp manufacturers, suppliers, factory, elastic rail clip, properties of rail insulators, rail plastic sleeve, square head screw spike, Tie Plate, weld on rail shoulder
