Port Container Gantry Cranes

Types of Port Container Gantry Cranes:

Ship-to-Shore (STS) Cranes

Used for transferring containers between ships and the dock.

Feature long booms to reach across large vessels.

High lifting capacity (typically 40–100+ tons).

Rail-Mounted Gantry (RMG) Cranes

Move on fixed rails within the terminal yard.

Used for stacking containers in storage areas.

Rubber-Tired Gantry (RTG) Cranes

Mobile cranes that operate in container yards.

Run on rubber tires for flexibility in movement.

 

Key Differences Between STS, RTG, and RMG Cranes

Component	STS Crane (Ship-to-Shore)	RTG (Rubber-Tired Gantry)	RMG (Rail-Mounted Gantry)
Mobility	Rails along quay	Rubber tires (yard)	Fixed rails (yard)
Lifting Capacity	40–100+ tons	30–50 tons	30–50 tons
Automation	High (AI/remote ops)	Moderate (some automated)	High (automated yards)

 

Features & Capabilities:

Lifting Capacity: 40–100+ tons (some ultra-large cranes handle even more).

Outreach: Up to 72 meters (to service mega-ships like those with 24+ container rows).

Automation: Many modern cranes are semi or fully automated (e.g., remote-controlled or AI-driven).

Speed: Hoisting speeds up to 180 ft/min, trolley travel at 240 ft/min.

 

Place of Origin：Henan, China

Warranty：1 Year

Weight (KG)：2000 kg

Video outgoing-inspection：Provided

Machinery Test Report：Provided

Keywords：gantry crane

Color: Customized

Size: Customized

Design: computer optimization design

Safety: High flexible flat cable power

Application: construction industrial,workshop,warehouse

Working class: A3-A8

Certification: ISO,CE,BV,S GS,TUV

Power Source: 380~480V,customized

Port container gantry cranes, especially Ship-to-Shore (STS) cranes, consist of several critical components that work together to ensure efficient container handling. Below is a detailed breakdown of their key parts:

 

1. Structural Components

A. Boom (Outreach Arm)

Function: Extends over the vessel to load/unload containers.

Types:

Fixed Boom: Standard design with a set outreach.

Adjustable Boom: Can be raised/lowered to accommodate different ship sizes.

Outreach Range: Typically 20–72 meters (to reach ultra-large container ships).

 

B. Gantry Frame (Portal Structure)

Supports the entire crane and allows movement along rails.

Landside & Waterside Legs: Provide stability; some cranes have A-frame supports for extra strength.

C. Trolley & Hoist System

Trolley: Moves horizontally along the boom to position the spreader.

Hoist Mechanism: Raises/lowers containers using wire ropes or chains.

Lifting Speed: Up to 180 ft/min (55 m/min) for efficient operations.

D. Spreader (Container Lifter)

Function: Locks onto containers using twistlocks.

Types:

Fixed Spreader: Handles one container size (e.g., 20ft or 40ft).

Telescopic Spreader: Adjusts to different lengths (20ft, 40ft, 45ft).

Twin/Lift Spreader: Can lift two 20ft containers simultaneously.

 

2. Mobility & Drive Systems

A. Rail System

STS cranes move on parallel rails along the quay.

Drive Mechanism: Powered by electric motors (AC/DC) with anti-collision systems.

B. Wheels & Bogies

Distribute the crane's weight and ensure smooth movement.

Some cranes use hydraulic systems for alignment adjustments.

3. Power & Control Systems

A. Power Supply

Cable Reel System: Delays electricity through trailing cables.

Alternative: Some cranes use diesel generators or battery backups.

B. Operator Cabin

Located on the crane for direct visibility.

Equipped with joysticks, screens, and automation controls.

Modern cranes may have remote-control stations or AI-assisted operations.

 

C. Automation & Sensors

LIDAR/Cameras: Detect container positions and obstacles.

PLC Systems: Control movements for precision.

Anti-Sway Tech: Reduces container swing during transit.

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4. Safety & Auxiliary Components

A. Braking Systems

Emergency brakes for sudden stops.

Anemometers to detect high winds and halt operations if necessary.

B. Lights & Alarms

Warning signals for movement and lifting.

Flashing beacons for visibility in low light.

C. Ladders & Maintenance Platforms

Allow technicians to access mechanical/electrical parts for servicing.

5. Specialized Attachments (Optional)

Reefer (Refrigerated Container) Handlers: Extra power slots for cooling units.

Weighing Systems: Measure container weight during lifting.

Laser Guidance: For automated stacking in terminals.

SKETCH

 

Main technical

 

Unmatched Efficiency

Capable of handling 30-50+ container moves per hour

Cycle times as low as 2-3 minutes per container

Simultaneous hoisting and trolley movement for optimal productivity

Mega-Ship Compatibility

Outreach up to 72 meters to service ultra-large container vessels

Lifting heights exceeding 50 meters above quay level

Capacity to handle ships carrying 24,000+ TEUs

Operational Flexibility

Adjustable boom systems for different vessel profiles

Interchangeable spreaders for various container types/sizes

Capability to work in tandem with yard equipment

Advanced Automation

Remote operation capabilities

Computer-assisted positioning systems

Integration with terminal operating systems (TOS)

Enhanced Safety Features

Anti-collision systems

Load monitoring and overload protection

Automated storm securing systems

Environmental Benefits

Regenerative power systems

Electric operation options

Reduced carbon footprint compared to manual systems

 

Primary Applications:

Container Terminal Operations

Primary tool for ship-to-shore container transfers

Essential for mainline vessel servicing

Critical for maintaining port productivity and vessel turnaround times

Intermodal Connections

Direct transfer to yard gantry cranes (RMGs/RTGs)

Interface with straddle carriers and shuttle trucks

Connection point for landside transport modes

Specialized Cargo Handling

Oversized and project cargo movements

Reefer container operations

Dangerous goods container handling

Port Development Projects

Enabling infrastructure for new mega-terminals

Key equipment for port expansion projects

Technology showcase for smart port initiatives

Emergency and Special Operations

Disaster relief cargo handling

Military logistics support

Special vessel loading scenarios

Emerging Applications:

Automated Container Terminals

Integration with automated guided vehicles (AGVs)

Interface with automated stacking cranes

Central component in lights-out terminal operations

Green Port Initiatives

Electrification projects

Energy recovery systems

Low-emission port operations

Data Collection Hub

Container tracking and tracing

Performance monitoring

Predictive maintenance data collection

 

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Crane production procedure

1. Design and Engineering

Requirement Analysis

Understand the client's specifications (load capacity, span, height, working environment, etc.).

Determine operational parameters: lifting height, travel speed, working frequency, etc.

Preliminary Design

Create conceptual designs and 3D models.

Choose materials based on strength and environmental conditions.

Detailed Engineering

Develop detailed engineering drawings (structural components, mechanisms, electrical systems).

Perform stress and fatigue analysis to ensure safety.

2. Material Procurement

Source high-quality materials, including:

Steel plates and profiles for structural components.

Motors, gearboxes, and other mechanical parts.

Electrical systems and control components.

Inspect materials to ensure compliance with quality standards.

3. Fabrication

Structural Component Fabrication

Cut, weld, and assemble the steel structures (main girder, cantilever arms, legs, etc.).

Ensure precise alignment and dimensions.

Perform surface treatment (e.g., shot blasting, painting) for corrosion protection.

Mechanical Assembly

Assemble mechanical parts (trolley, hoist, wheels, etc.).

Install motors, gearboxes, and drive systems.

Electrical Assembly

Install electrical components (control panels, cables, sensors).

Wire and connect the system to ensure functionality.

4. Quality Inspection

Material Inspection

Verify material certification and conduct tests (e.g., tensile tests).

Structural Inspection

Inspect weld quality (e.g., ultrasonic testing).

Ensure dimensional accuracy and surface finishing.

Assembly Inspection

Check alignment and functionality of all parts (mechanical and electrical).

Load Testing

Conduct static and dynamic load tests to ensure safe operation.

5. Factory Acceptance Testing (FAT)

Conduct a comprehensive trial run, including:

Full load and overload tests.

Functionality of all safety devices (e.g., limit switches, emergency brakes).

Smooth operation of trolley, hoist, and crane travel.

Document results and obtain client approval.

6. Disassembly and Packing

Disassemble the crane into transportable sections.

Pack components securely to prevent damage during transportation.

Label and prepare a packing list for efficient reassembly.

7. Transportation

Deliver the crane components to the installation site using appropriate transportation methods.

8. Installation and Commissioning

On-Site Assembly

Assemble structural components and mechanical systems.

Install electrical systems and control panels.

Calibration and Testing

Recalibrate the crane system for site-specific conditions.

Perform on-site load testing to verify performance.

9. Handover

Provide training to the client's personnel on safe operation and maintenance.

Deliver technical documentation (user manual, maintenance guide, certificates).

Obtain final approval and acceptance from the client.

10. After-Sales Support

Offer warranty services and maintenance support.

Provide spare parts and technical assistance as needed.

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%.