Tyred Mobile Gantry Crane

Key Features of Tyred Mobile Gantry Cranes

1. Mobility & Maneuverability

Rubber tires (pneumatic or solid) enable movement on flat surfaces.

Steering systems (crab, 90°, or all-wheel steering) for tight spaces.

Self-propelled (diesel, electric, or hybrid power).

2. Structural Design

Adjustable span width to fit different workspaces.

High lifting height (useful for stacking containers or heavy loads).

Sturdy gantry frame (typically made of welded steel).

3. Lifting Mechanism

Hoist & trolley system (electric or hydraulic).

Spreader or hook attachment (for containers, machinery, etc.).

Load capacity (typically 20–100+ tons, depending on model).

4. Power Options

Diesel-powered (for outdoor, remote locations).

Electric (E-RTG) (with cable reel or battery for eco-friendly operation).

Hybrid (combines diesel and electric for efficiency).

 

Comparison with Other Gantry Cranes

Feature	Tyred Mobile Gantry (RTG)	Rail-Mounted Gantry (RMG)	Overhead Gantry Crane
Mobility	High (rubber tires)	Low (fixed rails)	Low (fixed structure)
Infrastructure Needed	None (just flat ground)	Rail tracks	Support beams/runway
Relocation Flexibility	Easy	Impossible	Difficult
Best For	Ports, logistics, construction	Large container terminals	Factories, workshops

 

Lifting Capacity 320 tons
Span (Width) 3 - 12 meters (adjustable)
Lifting Height 3 - 10 meters
Working Class A3-A5 (light to medium duty)
Hoisting Speed 0.5 - 8 m/min (variable)
Main Beam Type Single/double girder (box-type)
Power Supply 220V/380V 3-phase or manual
Control Mode Pendant control/wireless remote
Hoist Type Electric chain hoist/wire rope hoist
Travel Drive Manual push or motorized
Corrosion Protection Hot-dip galvanized or marine-grade paint
Wind Resistance Up to Beaufort scale 6 (for outdoor use)
Operating Temp -20°C to +50°C

 

Here's a detailed breakdown of the components of a rubber-tyred (tyred) mobile gantry crane (RTG), categorized for clarity:

 

1. Structural Components

A. Gantry Frame

Main Girder/Beam

Primary horizontal beam spanning the work area (box-type or truss design).

Legs (Upright Supports)

Vertical columns (fixed or adjustable height) with stabilizing cross-braces.

End Carriages

Steel frames connecting legs to wheels/tires for mobility.

B. Boom (Optional)

Telescopic or lattice boom for extended reach (used in some industrial models).

 

2. Mobility System

A. Undercarriage

Rubber Tires

Pneumatic (for rough terrain) or solid (for heavy-duty/port use).

Axle Assemblies

Single or multi-axle configurations (4–16 wheels).

Steering Mechanism

Crab, 90°, or all-wheel steering for precise maneuvering.

 

B. Drive System

Power Source

Diesel engine, electric motors (battery/cable-reel), or hybrid.

Transmission

Hydraulic or electric drive motors for wheel movement.

Braking System

Disc/drum brakes + regenerative braking (in electric models).

 

3. Lifting Mechanism

A. Hoist Unit

Electric or Hydraulic Hoist

Gearbox, drum, and wire rope for vertical lifting.

Load Block & Hook

Swivel hook or specialized spreader (for containers).

B. Trolley System

Trolley Frame

Moves along the gantry beam via motorized wheels.

Trolley Drive

Electric or hydraulic motor with rail guides.

 

 

4. Power & Control Systems

A. Power Supply

Diesel Generator (for conventional RTGs).

Electric Panel (for E-RTGs with cable reel/battery).

Hybrid System (combines diesel + electric).

B. Operator Controls

Control Cabin

Joysticks, touchscreen, and safety switches.

Remote Control (optional wireless operation).

 

C. Sensors & Automation

PLC (Programmable Logic Controller)

Manages movements and safety interlocks.

Load Moment Indicator (LMI)

Prevents overloads.

Anti-Collision Sensors

Laser/ultrasonic sensors for obstacle detection.

 

5. Safety Components

Outriggers/Stabilizers

Extendable legs for added stability during lifts.

Emergency Stop Buttons

Installed in cabin and remote.

Anti-Sway System

Reduces load swing during movement.

Anchoring Points

For securing the crane in high winds.

SKETCH

 

Main technical

 

Mobility & Flexibility

No fixed rails required – Can operate on any flat, solid surface.

Easy relocation – Ideal for temporary job sites or multi-location projects.

Steering options (crab, 90°, or all-wheel) for tight spaces.

Cost Efficiency

Lower infrastructure costs than rail-mounted gantry cranes (RMGs).

Fuel-efficient options (electric/hybrid models available).

High Load Capacity & Stacking Ability

Typically 20–100+ tons lifting capacity.

Can stack containers 4–6 high, optimizing yard space.

Versatility

Handles containers, steel coils, machinery, and bulk cargo.

Adaptable with hooks, spreaders, or custom attachments.

Reduced Downtime

No rail maintenance needed (unlike RMGs).

Modular design simplifies repairs.

Environmentally Friendly Options

Electric (E-RTG) and hybrid models reduce emissions.

1. Ports & Container Terminals

Container stacking (yard operations).

Loading/unloading trucks, trains, and barges.

Intermodal logistics (transfer between transport modes).

2. Logistics & Warehousing

Heavy cargo handling (steel, machinery, large crates).

Cross-docking (transferring goods between trucks).

3. Construction & Heavy Industry

Bridge/road construction (lifting precast concrete, beams).

Power plants/shipyards (handling turbines, generators, ship parts).

4. Manufacturing & Industrial Plants

Steel mills (coil, plate, and pipe handling).

Automotive/aerospace (positioning heavy components).

5. Emergency & Temporary Work

Disaster recovery (debris lifting).

Event staging (installing heavy equipment).

 

The production process of a 200-ton mobile boat/marine lift crane involves several stages, from design and engineering to fabrication, assembly, and testing. Below is a detailed breakdown of the typical production process:

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1. Design & Engineering

Conceptual Design: Engineers create initial sketches and 3D models based on load capacity (200 tons), reach, mobility, and environmental conditions (marine use).

Structural Analysis: Finite Element Analysis (FEA) ensures the crane can handle dynamic loads, wind, and wave forces.

Hydraulic & Electrical Systems: Design of hydraulic cylinders, winches, and control systems for smooth lifting operations.

Material Selection: High-strength steel (e.g., ASTM A514) for corrosion resistance in marine environments.

Regulatory Compliance: Meets standards like DNV-GL, ABS, or Lloyd's Register for marine cranes.

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2. Material Procurement

Steel Plates & Beams: Sourced for the boom, chassis, and structural framework.

Hydraulic Components: Pumps, cylinders, hoses, and valves from certified suppliers.

Electrical Systems: Motors, sensors, and control panels (often waterproof for marine use).

Wire Ropes & Sheaves: High-grade steel cables for lifting.

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3. Fabrication

A. Structural Fabrication

Cutting & Shaping: CNC plasma/laser cutting for precision parts.

Welding: Automated and manual welding (Submerged Arc Welding for thick sections).

Boom Construction: Lattice or telescopic design for strength and mobility.

Chassis & Outriggers: Reinforced for stability during lifts.

B. Hydraulic & Mechanical Assembly

Hydraulic System: Installation of pumps, cylinders, and hoses.

Winches & Drums: Mounted for lifting and lowering operations.

Slewing Mechanism: Allows 360° rotation (if applicable).

C. Electrical & Control Systems

Control Cabin: Waterproof operator station with joysticks/sensors.

Load Monitoring: Load cells and limit switches for safety.

Power Supply: Diesel engine or electric motor (marine-grade).

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4. Assembly & Integration

Boom Installation: Mounted onto the chassis with pivot points.

Counterweights: Added for balance (if required).

Final Wiring & Plumbing: Connecting hydraulic and electrical systems.

Painting & Coating: Anti-corrosion paint (epoxy or zinc coatings).

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5. Testing & Quality Control

Load Testing: Lifting 200 tons (+25% overload test, per standards).

Functional Tests: Checking hydraulic movements, rotation, and stability.

Environmental Tests: Salt spray tests for marine durability.

Safety Checks: Emergency stop systems, overload alarms.

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6. Delivery & Commissioning

Transport: Disassembled for shipping or delivered as a mobile unit.

On-Site Assembly: Reassembled at the dock or shipyard.

Operator Training: Handling and safety protocols.

Workshop view:

The company has installed an intelligent equipment management platform, and has installed 310 sets (sets) of handling and welding robots. After the completion of the plan, there will be more than 500 sets (sets), and the equipment networking rate will reach 95%. 32 welding lines have been put into use, 50 are planned to be installed, and the automation rate of the entire product line has reached 85%.