Gantry crane
Rail-Mounted Gantry Crane
Product Overview
The Rail-Mounted Gantry Crane runs on a pair of fixed rails embedded in the yard, offering the highest positioning precision and load capacity among gantry crane types. RMGs are the standard choice for high-throughput container terminals, intermodal rail yards, and heavy bulk-handling operations where repeatable, automated positioning is more valuable than the lane-changing flexibility of a rubber-tyred design.
Structure Composition
- Main Girder: Heavy box-type double girder structure, sized for high duty-cycle, often automated operation.
- Legs: Rigid A-frame or portal legs mounted on multi-wheel bogies running on the fixed rail.
- Runway: Ground-embedded rail with precisely surveyed gauge and elevation, since RMGs depend on runway accuracy for automated positioning.
- Trolley/Spreader: Container spreader (fixed or telescopic) or hook/grab for bulk handling.
- Control System: Cab-operated, remote-operated, or fully automated (ARMG) with position sensors and anti-sway control.
Application
- Container terminal stacking yards (especially automated terminals)
- Intermodal rail yards for container transfer between rail cars and trucks
- Bulk material handling yards (coal, ore, aggregates) requiring high-capacity, repeatable operation
- Any high-throughput yard where automation and precise, repeatable positioning justify a fixed-rail investment
Key Features
- Higher load capacity and stability than rubber-tyred designs, due to the fixed rail eliminating tyre flex and steering slack
- Suited to full or partial automation (ARMG), since fixed-rail travel removes positioning variability
- Lower per-move energy consumption than diesel-powered RTGs, typically running on grid power via cable reel or conductor rail
- Long service life and lower tyre-related maintenance cost compared to RTGs
Technical Parameters (Reference Range)
Lifting Capacity: 20–65 t (container/general cargo)
Span: 16–30+ m (across multiple container rows plus rail/truck lanes)
Stacking Height: 1-over-4 to 1-over-6+ tiers
Power: Grid electric (cable reel or conductor rail)
Automation Level: Manual, remote, or fully automated (ARMG)
Safety Devices
Overload protection, anti-sway and anti-collision systems, automated position verification (for ARMG), rail clamps and storm anchors for wind safety, emergency stop system, and runway alignment monitoring.
Customization Options
Span (number of container rows plus lanes), automation level, spreader type, power supply method, and rail gauge to match the terminal’s civil layout.
