Cantilever Base 2AH / 2AV
Post-top base fixing single, double or triple cantilever assemblies to concrete and steel masts, with rotation for adjustment.
Specifications
| Model | 2AH / 2AV |
|---|---|
| Drawing No. | 2AH, 2AV |
| Standard | TB/T 2075.2-2024 — Part 2: Cantilever bases |
| Materials | Forged or cast steel/ductile iron, anti-corrosion coated |
| Installation | Bolted to the top of the OCS mast, fixing the cantilever support device |
The 2AH/2AV cantilever base is the interface between the OCS mast and the cantilever support device. Bolted to the top of the post, its rotating part carries the cantilever insulator and the cantilever assembly, and it is selected for single, double or triple cantilever arrangements — typical for station areas where several tracks meet near one mast line. Retained adjustment freedom covers erection tolerances and later service alignment.
Type variants (2AH, 2AV and related forms) match concrete and steel post interfaces and different assembly orientations. Forged and cast process states are both available, with mechanical properties meeting the assembly requirements, and all surfaces carry anti-corrosion treatment for long outdoor service.
Design Features
- AH / AV type family covers concrete and steel masts
- Single-, double- and triple-cantilever versions for station and interstation duty
- Rotating joint works with the cantilever insulator for smooth adjustment
- Forged or cast execution per project specification
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.
The base is installed at the top of OCS masts together with rod (post) insulators and the cantilever assembly, transferring suspension loads reliably into the mast. Henan Chuangwit supplies bases to match your post type and cantilever arrangement, with interface dimension confirmation before order. It is the fitting that fixes the cantilever support device to the top of the OCS mast: bolted to the post, its rotating part carries the cantilever insulator and the cantilever assembly, and it retains adjustment freedom for erection and service. The type letters denote the post-interface variants — AH and AV cover concrete and steel masts and different assembly orientations, so the base matches the post family used on the line. Yes. Bases are selected for single, double or triple cantilever arrangements, typical for station tracks where several suspensions meet near the mast. Both process states are available and both meet the mechanical requirements of the assembly; the choice follows the project specification and interface drawings.Frequently Asked Questions
What is a cantilever base?
What is the difference between 2AH and 2AV types?
Can one base carry several cantilevers?
Forged or cast — which should I choose?
Performance
Operating Conditions
Outdoor service at the post top, transferring suspension, wind and vibration loads from the cantilever assembly into the mast.
Mechanical Performance
Forged or cast execution meets assembly mechanical requirements; rotating interface permits erection and service adjustment of the cantilever.
Applications
Concrete Masts
AH interface family for concrete post tops.
Steel Masts
AV interface family for steel post tops.
Station Multi-Track
Double and triple cantilever versions.
Harsh Climates
Anti-corrosion coated for long service.
