23-6 Tunnel Limit Frame (Type B/C)
Guide and limit frame restraining the counterweight stack in tunnel compensation systems.
Specifications
| Model | 23-6B / 23-6C |
|---|---|
| Standard | TB/T 2075.23-2024, Fittings for overhead contact system of electrification railway — Part 23: Tunnel anchoring compensation devices |
The 23-6 tunnel limit frame is installed at tunnel anchorages to guide and laterally restrain the moving parts of the compensation system — chiefly the counterweight stack — so that they cannot swing, drift or jam as the tension compensation travels.
Manufactured to TB/T 2075.23-2024, Fittings for overhead contact system of electrification railway — Part 23: Tunnel anchoring compensation devices, two constructions cover different installation conditions: Type B, a double-rod frame, and Type C, a guided construction. Both are welded section-steel structures with the rigidity to hold the guiding geometry under load.
The frame is hot-dip galvanized overall for the damp tunnel environment, and its mounting interfaces match the 23-1 anchor arm and the rest of the 23-series tunnel tensioning set, so the complete system installs as matched components.
Henan Chuangwit Railway Equipment Co., Ltd. supplies both frame types under CRCC certification, with type selection against the tunnel's clearance and counterweight travel requirements.
Frequently Asked Questions
What does the limit frame do?
It guides and laterally restrains the moving counterweight stack of a tunnel compensation system so the stack cannot swing or jam and the compensation travel stays smooth.
Which types are available?
Type B (double-rod) and Type C (guided) constructions, selected for the tunnel's load and installation space.
What is the frame made of?
A welded section-steel structure, hot-dip galvanized overall for the damp tunnel atmosphere.
