Introduction of Rubber-tyred Gantry Crane

Rubber-tyred Container Gantry RTG Cranes are applicable to remove, load and unload international standard containers.

Features of Rubber-tyred Gantry Crane

Key characteristics include:

• Fixed guide plates and anti-sway systems to ensure operational stability.

• Minor rotation capability for precise container positioning.

• Rubber tires enabling 90° turns for inter-yard mobility.

• Standard span of 23.47m (covering 6 container rows + a walkway), with custom spans available.

• Ability to lift a 9'6" high 40ft container over 4–6 stacked tiers.

Drive Configurations:

• Diesel-Electric:A diesel engine drives a generator that powers electric motors, utilizing AC/DC frequency control for smooth speed regulation. AC frequency control is now prevalent due to its maintenance advantages.

• Diesel-Hydraulic:Hydraulic pumps driven by a diesel engine power the motors. This type offers rapid acceleration but is more susceptible to leaks and is less commonly used.

Hybrid RTGs (Oil-to-Electric Conversion):

Many terminals now employ RTGs that combine grid electricity with diesel power. Grid power is used during stacking to reduce emissions, while diesel is engaged during transit.

Structure & Main Components

1. Main Frame

• Main Beam: Box-type steel structure with trolley rails (centered or offset).

• Legs: Box-shaped design housing electrical compartments, reinforced with cross bracing.

• Base Beam: Connects to wheels via pins and shear blocks.

• Rail Assembly

• Rails are bolted or welded to the beam, often with rubber damping pads. Seamless welded rails may be used for enhanced strength.

• Trolley Frame

• Steel frame equipped with access walkways and maintenance platforms.




Core Systems

1. Wheel System

• Wheels: 4–16 large tubeless tires (size 18.00–25, 28–40 ply rating).

• Drive: Chain/sprocket mechanism powered by motors, with adjustable tension.

• Steering: Capable of 90° turns on steel plates; some models include wheel-lifting to minimize tire wear.

• Anti-Collision: Manual correction or automated systems using cameras/sensors.

• Trolley Drive

• Wheel Drive: Friction-based; 4-wheel drive models prevent slippage in wet conditions.

• Rack Drive: Gear-and-rack mechanism for precise positioning, requiring careful alignment.

• Lifting System

• Combines motor and gearbox (parallel or vertical configuration), with brakes and encoders for control.

• Diesel Generator (if equipped)

• Includes fuel tanks, pumps, and cooling systems. Elevated tanks ensure consistent fuel supply.

• Operator Cabin

• Features glass walls for visibility, air conditioning, safety grids, and control interfaces. Safety systems include overload protection, emergency stops, and wind sensors.




Why Opt for Our RTG Cranes?

• Robust construction compliant with ISO, FEM, and DIN standards.

• Intelligent control systems integrating PLC and remote monitoring.

• Adaptable configurations with customizable capacity and span.

• Premium components from brands such as Siemens, Schneider, SEW, and reputable Chinese manufacturers.

Ideal for ports and logistics yards requiring mobility, reliability, and operational economy.




Key Benefits of Our RTG Cranes

1. Optimized Strength-to-Weight Ratio

• The trolley configuration maintains a lightweight yet durable frame.

• Constructed from welded steel (Q235B/Q345B) for heavy-duty performance.

• Enhanced Mobility & Productivity

• Rubber tires provide flexibility on uneven surfaces (handling slopes up to 1–3%).

• Independent drives and frequency control enable smooth functioning.

• Precision spreader handles ISO containers, with twin-lift options.

• Dual-Power Operation

• Primary power: cable drum or slide wire (380V, 50Hz AC).

• Backup diesel generator ensures continuity during outages or yard transfers.

• Intelligent Control & Safety

• Schneider/Siemens PLC and frequency drives for accurate motion control.

• Remote Crane Monitoring System (RCMS) for real-time oversight.

• F-class motors (e.g., Jiamusi, ABM, SEW) rated for harsh environments (-20°C to +45°C).

• Durable Components

• Vacuum-cast wheels require minimal maintenance.

• Forged steel hooks and robust winches (A6-A7 duty grade).

• Heavy-duty rubber tires with protective features for extended service life.

• Adaptability to Conditions

• Operational in winds up to 20 m/s; survival wind speed of 44 m/s when parked.

• Functions in high humidity (up to 95%, including dew formation).

• Customized designs available.

• Cost Efficiency

• Dual-power design reduces downtime.

• Energy-efficient drives lower operating expenses.

• Modular structure simplifies maintenance and repairs.




Technical Parameters of Rubber-tyred Gantry Crane