1-2 Inclined Cantilever (1-2BG60 / 1-2AL70)
Slanted load-bearing tube that stabilizes the cantilever triangle and carries positioning loads.
Specifications
| Model | 1-2BG60 / 1-2AL70 |
|---|---|
| Drawing No. | 1-2BG |
| Standard | TB/T 2075.1-2024 — Part 1: Cantilever support devices |
| Design Speed | ≤250 km/h (1-2BG60) / 250–350 km/h (1-2AL70) |
| Materials | Hot-dip galvanized steel tube (Φ60); aluminum alloy tube 6082-T6 (φ70×6) |
| Installation | Mounted diagonally between the mast and the flat cantilever, carrying positioning tube and contact wire loads |
The 1-2 inclined cantilever is the slanted load-bearing tube of a cantilever support device for electrified railway overhead contact systems. Arranged diagonally between the mast and the flat cantilever, it closes the load-bearing triangle of the assembly and provides the mounting reference for the positioning device that holds the contact wire at the designed stagger.
The lower end cooperates with the cantilever base and the post-side insulator; the upper end is hinged to the flat cantilever through the 1-3 cantilever connector; and the 1-6 support connector attaches the support tube to it. This triangulated arrangement raises the overall stiffness of the assembly and suppresses vibration and displacement in service.
Variants and Speed Classes
- 1-2BG60 — Φ60 hot-dip galvanized steel tube for ≤200 km/h and 200–250 km/h lines (supplied in speed classes)
- 1-2AL70 — φ70×6 aluminum alloy tube (6082-T6) for 250–350 km/h aluminum cantilever systems, with matching AL70 fittings
The product is manufactured under CRCC railway product certification and an ISO 9001 quality management system, with incoming material inspection, in-process control on critical operations and batch-by-batch final inspection before delivery.
Typical applications are interstation and station cantilever supports on mainline, high-speed and mixed-traffic lines. Henan Chuangwit supplies the inclined cantilever as part of a matched assembly with bases, insulators and connectors, including pre-assembly drawings and site guidance. It is the slanted load-bearing tube of the cantilever support device. Its lower end works with the post-side base and insulator, its upper end joins the flat cantilever through the cantilever connector, and via the support connector it also carries the support tube — forming the stable triangle that provides the mounting reference for the positioning device. 1-2BG60 in Φ60 hot-dip galvanized steel for lines up to 250 km/h, and 1-2AL70 in φ70×6 aluminum alloy (6082-T6) for 250–350 km/h aluminum cantilever systems. It is mounted diagonally between the mast and the flat cantilever, carrying the loads from the positioning tube and the contact wire side of the assembly. Yes. The Φ60 (steel) and φ70 (aluminum) tube diameters match cantilever connectors, positioning rings and support connectors, so pre-assembly and later adjustment use standard parts throughout.Frequently Asked Questions
What role does the inclined cantilever play?
Which models are available for the 1-2 inclined cantilever?
How is the inclined cantilever installed?
Does it match the standard fittings family?
Performance
Operating Conditions
Outdoor service on mainline and station OCS support structures, carrying positioning and suspension loads through the triangulated cantilever structure.
Mechanical Performance
Diagonal layout gives the assembly high stiffness and vibration resistance; standardized hole patterns match the cantilever fittings family for pre-assembly and adjustment.
Applications
High-Speed Mainlines
1-2AL70 aluminum version for 250–350 km/h lines.
200–250 km/h Lines
1-2BG60 steel version for passenger dedicated lines.
Station Yards
Standard fittings simplify multi-track erection.
Harsh Climates
Galvanized / aluminum construction for long outdoor service.
