Container Handling Gantry Cranes

 

Lifting Capacity: Designed to handle containers of various sizes (20ft, 40ft, 45ft, etc.) and weights, often ranging from 30 to 100+ tons.

Span Width: Adjustable or fixed spans to cover multiple container rows.

Automation: Many modern gantry cranes are automated or semi-automated for improved efficiency and safety.

Precision Control: Advanced control systems for accurate positioning of containers.

Durability: Built to withstand harsh environmental conditions, such as saltwater corrosion and heavy winds.

Safety Systems: Equipped with anti-collision, overload protection, and emergency stop mechanisms.

 

Place of Origin:Henan, China

Warranty:2 years

Weight (KG):60000 kg

Video outgoing-inspection:Provided

Machinery Test Report:Provided

Application:warehouses,factory and other place

Crane type:box type gantry crane

Travelling speed:20m/min

Lifting mechanism:Electric Hoist

Control method:Ground Control+ Remote Control (customized)

Working duty:A5

Working Temperature:-20~+40℃

Industrial voltage:380V50HZ3Phanse or other

Color:Customised

Customization:Accepted

 

 

1.Main beam

The horizontal beam that spans the width of the crane.

Supports the trolley and hoist mechanism.

Designed to handle heavy loads and resist bending.
Electric Motor Driven:
The crane's movement is powered by an electric motor, which provides smooth and efficient operation.
The electric motor typically drives the trolley and hoist, allowing the crane to lift, lower, and move loads along the beam.

2.Lifting System

These components are responsible for lifting, moving, and positioning containers.

Trolley:

Moves along the main girder to position the spreader over the container.

Equipped with motors for horizontal movement.

Hoist Mechanism:

Includes the winch, wire ropes, and drums for lifting and lowering containers.

Designed for precise control and smooth operation.

Spreader:

A specialized lifting device that attaches to the top of a container.

Can handle different container sizes (20ft, 40ft, 45ft, etc.).

May include twist locks to securely grip the container.

Ropes and Pulleys:

High-strength steel wires and pulleys are used to lift and lower loads.

Regularly inspected for wear and tear.

3.Mobility Components

These enable the crane to move within the terminal or yard.

Wheels (for RTG Cranes):

Rubber-tired wheels allow the crane to move freely in the container yard.

Equipped with steering mechanisms for maneuverability.

Rail System (for RMG Cranes):

Fixed rails guide the crane's movement.

Provides stability and precision for high-volume operations.

Drive Motors:

Electric or hydraulic motors power the movement of the crane.

Equipped with brakes for safe stopping.

                                         

4.Power and Control Systems

These components ensure the crane operates efficiently and safely.

Electric Panels and Cabinets:

House the electrical components, including transformers, circuit breakers, and control systems.

Control Cabin:

The operator's station, equipped with joysticks, monitors, and control panels.

Provides a clear view of the operating area.

Automation Systems (Optional):

Advanced cranes may include automated control systems for unmanned operation.

Uses sensors, cameras, and software for precise container handling.

Power Supply:

Diesel generators (for RTG cranes) or electrified rails (for RMG cranes) provide power.

Some cranes use hybrid or battery-powered systems for energy efficiency.

 

5.Safety Components

These ensure safe operation and protect both the equipment and personnel.

Anti-Collision Systems:

Sensors and software to prevent collisions with other cranes, containers, or obstacles.

Overload Protection:

Prevents the crane from lifting loads beyond its rated capacity.

Limit Switches:

Automatically stops the crane at the end of its travel range.

Emergency Stop Buttons:

Installed at key locations for immediate shutdown in case of an emergency.

Wind Sensors:

Monitor wind speed and alert operators or shut down the crane in high winds.

Lighting and Alarms:

Warning lights and alarms to alert personnel during crane operation.

 

6.Crane wheel

1)Wheel Design and Structure
Wheel Diameter: The size and diameter of the wheels depend on the crane's design and the type of track system it operates on. Larger wheels can support higher load capacities, but they also require sturdier rails and track systems.
2)Wheel Material:
Most crane wheels are made from high-quality steel or alloy steel, providing strength and durability for handling heavy loads and resisting wear from prolonged use.
Rubber-coated wheels can be used for quieter operations or for cranes that are operating in environments where noise reduction is important.
Special alloy or hardened steel is often used for heavy-duty applications, such as lifting heavy materials in shipyards, ports, or steel mills.
3)Wheel Axle and Bearings
The wheels are mounted on axles, which are shafts that rotate along with the wheels. These axles transfer the torque from the motor and gearbox to the wheels.
Bearings: High-performance roller bearings or ball bearings are mounted on the axles to reduce friction and ensure smooth rotation of the wheels. Properly maintained bearings ensure minimal wear, which extends the lifespan of the crane's wheel system.

7.Crane Hook

1)Size and Shape: The hook can be designed in different sizes and shapes to accommodate various lifting applications.
2)Load Capacity: Adjust the hook's lifting capacity according to your operational needs.
3)Material: The hook can be made from various materials like forged steel or alloy steel, depending on the load capacity and environmental conditions.
4)Motor Type: You can choose between different electric motor specifications to match the desired lifting speed, load, and power requirements.
5)Control System: You can integrate manual or automatic control systems, depending on your preferences.
6)Paint and Coating: Customized coating for the hook to resist corrosion, especially for outdoor or marine applications.

8.Motor

1)Motor Type:
AC Motors: Most common for gantry cranes, offering high efficiency and reliability.
DC Motors: Suitable for precise speed control applications, especially in small cranes or low-speed applications.
Variable Frequency Drives (VFD): Allows for variable speed control, optimizing performance based on load and operational conditions.
2)Power and Torque:
The motor's power is customized based on the required lifting capacity of the crane. Higher capacity cranes demand larger motors.
The torque provided by the motor should match the load requirements and the crane's movement speed.
3)Load Capacity and Speed:
Motors can be tailored to provide the appropriate lifting speed (slow for heavy loads, fast for lighter ones).
Crane motor speeds are adjustable to optimize the crane's operation depending on the type of material being moved or the application.

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Sound and light alarm system & limit switch

1)Sound and Light Alarm System
The sound and light alarm system is designed to alert operators and personnel to various crane operating conditions, such as the crane moving, the load being lifted or lowered, or an emergency situation. It can be integrated into the crane control system for real-time feedback.
2)Limit Switch System
A limit switch is an essential safety feature in a gantry crane. It prevents the crane from exceeding its designated operational limits, helping to protect the crane structure, motor, and load. Limit switches automatically stop or reverse the crane's movements once it reaches predefined limits.

10.Safety Devices

1)Overload Protection System
The overload protection system is one of the most critical safety devices for a gantry crane. It ensures that the crane does not lift loads exceeding its designed capacity, preventing potential damage to the crane and ensuring safe lifting operations.
2)Anti-Collision System
The anti-collision system prevents the gantry crane from colliding with other cranes, structures, or equipment. This is particularly important in areas with multiple cranes or dense operation spaces.
3)Emergency Stop System
The emergency stop system is essential for immediately halting the crane's operation in case of an emergency. This system helps prevent accidents or damage by quickly stopping the crane when necessary.
4)Limit Switches
Limit switches are crucial for preventing the crane from exceeding its safe operational limits. They stop the crane from moving beyond a specific range, thus avoiding damage to the crane, equipment, or structure.
5)Safety Locking Mechanism
A safety locking mechanism is used to prevent accidental movement of the crane or its components, especially during maintenance or when the crane is idle.

11.Control Mode

1)Manual Control Mode
This is the most basic and widely used control mode for gantry cranes, where the operator has full control over all crane movements using control buttons, joysticks, or levers.
2)Wireless Remote Control Mode
This mode enables the operator to control the crane from a distance, improving safety by allowing the operator to avoid hazardous areas or work in more convenient locations.
3)Cab Control Mode
In this mode, the operator controls the crane from a fixed cabin located on the crane itself. This mode is common for large gantry cranes operating in harsh environments, such as ports or shipyards.
4)Automated or Semi-Automated Control Mode
This control mode involves the automation of certain crane functions, reducing the need for manual intervention. The level of automation can range from semi-automatic (operator intervention is still required) to fully automatic (no human involvement in routine operations).
5)Dual Control Mode (Manual + Automatic)
In this hybrid mode, the crane can be operated manually or automatically depending on the situation, giving operators the flexibility to switch between control methods.

Sketch

Main technical

 

Advantages of Container Handling Gantry Cranes

Efficiency and Productivity:

Enable rapid loading and unloading of containers, reducing ship turnaround times.

Streamline container stacking and retrieval in storage yards.

Space Optimization:

Allow vertical stacking of containers, maximizing the use of available space in ports and terminals.

Reduce the footprint required for container storage.

Versatility:

Can handle containers of various sizes (20ft, 40ft, 45ft, etc.) and weights.

Equipped with adjustable spreaders to accommodate different container types.

Automation and Precision:

Modern gantry cranes can be automated or semi-automated, improving operational consistency and reducing human error.

Advanced control systems ensure precise positioning of containers.

Safety:

Equipped with safety features such as anti-collision systems, overload protection, and emergency stop mechanisms.

Reduce the risk of accidents and damage to containers or equipment.

Durability and Reliability:

Built to withstand harsh environmental conditions, such as saltwater corrosion, heavy winds, and extreme temperatures.

Designed for continuous operation in demanding industrial environments.

Cost-Effectiveness:

Reduce labor costs through automation and efficient operation.

Minimize downtime and maintenance costs with robust design and reliable components.

Scalability:

Can be customized to meet the specific needs of different terminals and facilities.

Suitable for both small-scale operations and large, high-volume ports.

Environmental Benefits:

Electrified RMG cranes and hybrid RTG cranes reduce fuel consumption and emissions.

Contribute to greener and more sustainable port operations.

Improved Logistics Flow:

Facilitate faster and more efficient movement of goods, enhancing supply chain performance.

Support just-in-time logistics and reduce inventory holding costs.

 

Applications of Container Handling Gantry Cranes

Ports and Terminals:

Ship-to-Shore Operations: STS (Ship-to-Shore) gantry cranes load and unload containers from ships to the dock and vice versa.

Yard Operations: RTG (Rubber-Tired Gantry) and RMG (Rail-Mounted Gantry) cranes stack and organize containers in storage yards.

Intermodal Facilities:

Transfer containers between different modes of transport, such as ships, trucks, and trains.

Facilitate seamless movement of goods in logistics hubs.

Container Freight Stations (CFS):

Handle the sorting, storage, and consolidation of containers before they are transported to their final destination.

Warehousing and Distribution Centers:

Manage the storage and movement of containers in large logistics and distribution hubs.

Manufacturing and Industrial Facilities:

Handle heavy loads and oversized containers in industrial settings, such as steel plants or automotive factories.

Inland Container Depots (ICD):

Provide temporary storage and handling of containers away from ports.

Military and Defense Logistics:

Used for handling containers in military logistics operations, including deployment and supply chain management.

 

1. Requirement Analysis & Technical Design
Client Consultation: Understand the customer's specific needs (load capacity, span, lifting height, working environment, control system, safety features).
Site Assessment: Evaluate the installation site, environmental conditions, and any special constraints.
Engineering Design:
Develop detailed 3D CAD drawings and structural calculations for the girder, end carriages, trolley, hoist, and electric systems.
Customize components such as motors, brakes, control panels, and safety devices based on project specifications.
Ensure compliance with international standards (ISO, FEM, CMAA, etc.).
2. Material Procurement
Steel Structure Materials: Source high-quality steel plates, beams, and profiles (Q235B/Q355B or equivalent) for the girder and frame.
Electrical & Mechanical Components: Purchase motors, gearboxes, brakes, hoists, control panels, limit switches, cables, and other electrical components from approved suppliers.
Specialty Items: Order additional customized parts (e.g., explosion-proof motors, stainless steel components, or corrosion-resistant finishes if needed).
3. Steel Structure Fabrication
Cutting: Use CNC cutting machines or laser cutters to process steel plates and profiles according to design specifications.
Beveling: Perform edge preparation for welding using beveling machines.
Welding:
Weld the main girder, end carriages, and other structural components according to certified welding procedures.
Conduct weld inspections (visual inspection, ultrasonic or X-ray testing if required).
Straightening: Use hydraulic presses to ensure the girder and frame are straight and dimensionally accurate.
Machining: Machine key connection points (e.g., wheel bases, trolley rails) for precise assembly.
4. Surface Treatment
Sandblasting/Shot Blasting: Remove rust, scale, and surface impurities from the steel structure to achieve SA2.5 or better surface grade.
Painting/Coating:
Apply primer and finishing coats based on the environmental working conditions (e.g., marine-grade paint for outdoor cranes).
Optional: Apply anti-corrosion, anti-static, or explosion-proof coatings depending on the client's requirements.
5. Component Assembly
Hoist & Trolley Assembly:
Assemble the electric hoist and trolley system, including motors, gear reducers, wire ropes or chains, and hook blocks.
Pre-install limit switches, brakes, and cable reels.
End Carriage Assembly:
Install traveling wheels, bearings, buffers, and drives onto the end carriages.
Electrical Wiring:
Pre-wire key components (e.g., hoist motor, trolley motor) in accordance with the electrical layout.
Install control systems, power supply cables, festoon systems, or cable carriers.
6. Pre-Assembly & Trial Fitting
Pre-assemble the girder, end carriages, hoist, trolley, and electrical system at the factory to ensure proper fit and alignment.
Conduct tolerance checks on critical dimensions (e.g., span, wheelbase, and diagonal measurements).
7. Factory Testing (Pre-Delivery Inspection)
Mechanical Testing: Perform no-load and partial-load tests on hoisting, trolley travel, and crane travel systems to verify smooth and reliable operation.
Electrical Testing: Verify proper functioning of motors, control panels, limit switches, alarms, and safety devices.
Safety Inspection:
Overload protection testing.
Emergency stop and brake system verification.
Check for proper function of sound and light alarms.
Note: A third-party inspection can be arranged if required by the client.
8. Disassembly & Packaging
Disassemble major components (girder, trolley, hoist, end carriages) for transport.
Protect all surfaces with anti-corrosion oil or protective wraps.
Use reinforced wooden crates or steel frames for sensitive components like motors, control systems, and electrical parts.
9. Delivery & Logistics
Organize transportation (by truck, rail, or sea) to the customer's site.
Provide detailed installation manuals, electrical diagrams, and operation guides along with the shipment.

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%.