Description
Technical Parameters
ailway Turnouts (Railroad Switches) Technical Overview
Basic Definition and Function
Definition: A railway turnout is a mechanical installation that enables trains to be guided from one track to another.
Core Functions:
- Route selection (diverging or straight path)
- Maintaining continuous wheel-rail contact
- Ensuring smooth transition between tracks
Classification of Turnouts
| Classification | Types | Characteristics |
|---|---|---|
| Layout | Simple turnout | 80% of network applications |
| Symmetrical turnout | Equal diverging angles | |
| Three-way turnout | Compact yard designs | |
| Frog Type | Fixed nose crossing | Speed limit ≤120km/h |
| Movable frog | High-speed standard (≥250km/h) | |
| Speed Rating | Conventional | #12 turnout (R350m curve) |
| High-speed | #42 turnout (R5000m curve) |
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