12-2 D-Type Connector
D-section connector joining compensation rope and counterweight stack in pulley tensioning systems.
Specifications
| Model | 12-2 |
|---|---|
| Standard | TB/T 2075.12-2024, Fittings for overhead contact system of electrification railway — Part 12: Pulley compensation devices |
| Installation | At the connection between the compensation rope and the counterweight stack |
The 12-2 D-type connector is the standard link of pulley compensation systems: it joins the compensation rope to the counterweight stack and other tensioning components, transferring the full system tension between them.
Manufactured to TB/T 2075.12-2024, Fittings for overhead contact system of electrification railway — Part 12: Pulley compensation devices, the connector takes its name from the D-shaped cross-section of its connection face. The D profile centers the rope socket naturally and keeps the joint aligned under load. The body is forged for strength, and the bearing faces are machined so the connection turns freely without sticking.
The finished connector is hot-dip galvanized for long outdoor service, and its dimensions match the 12-1H pulley block, 12-3 double-eye rod and 12-4 tongue-eye rod of the same system.
Henan Chuangwit Railway Equipment Co., Ltd. supplies the 12-2 under CRCC certification within the complete TB/T 2075.12 compensation fitting range.
Frequently Asked Questions
What is a D-type connector used for?
It connects the compensation rope to the counterweight stack (or other tensioning components) in pulley compensation systems, transferring tension between the parts.
Why the D-shaped cross-section?
The D-shaped connection face naturally centers the rope socket and keeps the joint aligned under load, so it moves freely without twisting or jamming.
How is it manufactured?
A forged body with machined bearing faces and hot-dip galvanized finish for long outdoor service.
Performance
Operating Conditions
Outdoor service in tension compensation and anchoring assemblies, transmitting rope and tension loads through moving and fixed joints.
Mechanical Performance
Forged D-type link joins the compensation rope to the counterweight stack; the D-shape keeps the loaded path aligned under vertical weight loads.
Applications
Rope-to-Weight Joint
Standard link at the counterweight stack.
Forged Link
Forged body carries the stack load.
Simple Service
Open and close with a pin joint.
12-Series Rods
Family of compensation connecting rods.
