Gantry Crane 200 Ton

 

Key Specifications of a 200-Ton Gantry Crane

Lifting Capacity

Maximum load capacity: 200 metric tons (200,000 kg).

Some models may have adjustable capacity (e.g., 100/200-ton dual capacity).

Span & Height

Span (width): Typically 10m to 40m (adjustable based on rail width).

Lifting Height: Usually 10m to 30m (can be customized).

Structural Design

Single or Double Girder:

Single girder for lighter-duty applications (lower cost).

Double girder for heavy-duty, high-precision lifting.

Fixed or Adjustable Legs: Some gantry cranes have extendable legs for different workspaces.

Power Supply

Electric (3-phase AC) with wire or wireless remote control.

Some models use diesel-electric hybrid for outdoor/mobile use.

Mobility Options

Rail-mounted: Moves on fixed tracks (common in shipyards).

Rubber-tired (RTG): Mobile on wheels (used in ports).

Crawler gantry: For heavy lifting in construction.

Hoisting Mechanism

Main Hoist: 200-ton capacity (with low-speed precision control).

Auxiliary Hoist: Optional (e.g., 20-ton secondary hoist).

Rope or Chain: Typically wire rope with high-strength alloy hooks.

Safety Features

Overload protection (load limiter).

Anti-collision sensors.

Emergency stop & fail-safe brakes.

Wind-resistant (for outdoor use).

 

 

A 200-ton gantry crane consists of several key structural, mechanical, and electrical components that work together to ensure safe and efficient heavy lifting. Below is a detailed breakdown of its major components:

 

1. Structural Components

A. Bridge Girder (Main Beam)

The primary horizontal beam that spans the work area.

Single girder (for lighter-duty) or double girder (for heavy-duty, higher stability).

Made of high-strength steel (box-type or truss structure).

B. Legs (Support Columns)

Vertical supports that hold the bridge girder.

Can be fixed-height or adjustable (hydraulic/screw mechanism).

Some cranes have A-frame legs for extra stability.

C. End Trucks (End Carriages)

Wheeled structures at each end of the girder for movement.

Include drive motors, wheels, and rail clamps.

D. Runway Rails

Steel tracks on which the crane moves.

Can be embedded in the floor or surface-mounted.

 

2. Lifting Mechanism (Hoisting System)

A. Hoist Unit

Electric or hydraulic motor for lifting/lowering.

200-ton main hoist (with gearbox, drum, and wire rope).

Optional auxiliary hoist (smaller capacity, e.g., 20-50 tons).

B. Wire Rope & Sheaves

High-strength steel wire rope (ISO-certified).

Pulleys (sheaves) guide the rope for smooth operation.

 

C. Hook Block

Heavy-duty swivel hook with safety latch.

May include a load cell for weight measurement.

D. Drum & Brake System

Winch drum for rope winding.

Fail-safe brakes (mechanical, hydraulic, or electromagnetic).

3. Traveling Mechanism

A. Drive Motors

AC/DC electric motors or hydraulic drives for movement.

Equipped with variable frequency drives (VFDs) for smooth acceleration.

B. Wheels & Axles

Forged steel wheels with high load capacity.

Some cranes use rubber-tired wheels (for mobile gantries).

C. Rail Clamps & Buffers

Anti-derailment clamps secure the crane when parked.

Shock absorbers/buffers prevent collisions.

4. Electrical & Control System

A. Power Supply

3-phase AC power (380V-480V, 50/60Hz).

Cable reels or busbar systems for power transmission.

B. Control Panel & Operator Cabin

Pendant control (wired/wireless remote).

Operator cabin (for large cranes, with joystick control).

C. Safety Devices

Overload limiter (cuts power if >200 tons).

Limit switches (for height and travel limits).

Anti-sway system (for precise load positioning).

Emergency stop (E-stop) buttons.

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5. Optional Components

Spreader Beams (for evenly distributing heavy loads).

Magnetic or Vacuum Lifters (for steel plates, containers).

Automated Positioning System (GPS/Laser-guided).

Wind-resistant locks (for outdoor use).

Lights & Alarms (for safety warnings).

Maintenance & Inspection Components

Lubrication system (auto-greasing for gears).

Wear pads & guides (to reduce girder friction).

Inspection platforms (for maintenance access).

SKETCH

Main technical

 

A 200-ton gantry crane is a powerful and versatile lifting solution for heavy industries. Its key advantages include:

1. High Lifting Capacity

Can handle ultra-heavy loads (up to 200 metric tons or more with customization).

Suitable for large-scale industrial applications where smaller cranes are insufficient.

2. Versatility & Customization

Available in single-girder (cost-effective) or double-girder (higher stability) designs.

Adjustable spans (e.g., 10m–40m) and lifting heights (10m–30m+).

Can be rail-mounted, rubber-tired (RTG), or crawler-type depending on mobility needs.

3. Improved Safety & Reliability

Equipped with overload protection, anti-collision sensors, and emergency brakes.

Sturdy steel construction ensures long-term durability even in harsh environments.

4. Cost-Effective for Heavy Lifting

Eliminates the need for multiple smaller cranes, reducing labor and operational costs.

Low maintenance compared to mobile cranes in long-term use.

5. Wide Range of Motion

Can cover large work areas, especially rail-mounted gantry cranes in shipyards and factories.

Some models feature 360° rotation for precise load positioning.

6. Energy Efficiency

Modern electric gantry cranes use regenerative braking & VFD controls to save power.

Diesel-electric hybrid models are available for remote sites.

 

Due to its massive lifting capacity, this crane is used in industries requiring heavy, oversized, or high-precision loads:

1. Shipbuilding & Repair

Lifting ship hulls, engines, and large components.

Used in dry docks for vessel assembly and maintenance.

2. Heavy Machinery & Manufacturing

Handling industrial boilers, turbines, press machines, and steel structures.

Common in automotive, aerospace, and energy equipment plants.

3. Construction & Infrastructure

Installing precast concrete segments, bridge girders, and steel trusses.

Used in tunnel construction, dam projects, and power plant erection.

4. Ports & Logistics

Loading/unloading heavy containers, breakbulk cargo, and offshore modules.

Rubber-tired gantry cranes (RTGs) are popular in container yards.

5. Power & Renewable Energy

Handling wind turbine blades, generators, and transformers.

Used in nuclear, hydro, and thermal power plants.

6. Mining & Oil/Gas Industry

Moving drilling rigs, pressure vessels, and mining equipment.

Often used in fabrication yards for offshore platforms.

 

 

1. Design and Planning

Demand Analysis: According to customer needs and usage scenarios, a detailed demand analysis is carried out to determine the specifications, load, span, lifting height, etc. of the crane.

Engineering Design: Engineers use CAD and other design software to carry out detailed design, including structural, mechanical, electrical and other aspects to ensure that the design meets relevant standards and specifications.

2. Material Procurement

Material Selection: Select appropriate steel, motors, control systems and other components according to design requirements.

Supplier Screening: Screen suppliers of materials and components to ensure the quality and reliability of materials.

3. Processing and Manufacturing

Cutting and Forming: Cut, weld, bend and other processes on steel to form main beams, end beams and other structural components.

Machining: Precision machining of key components, such as turning, milling, drilling, etc., to ensure that the size and accuracy meet the design requirements.

Surface Treatment: Spray, galvanize or rust-proof metal parts to enhance corrosion resistance and aesthetics.

4. Assembly

Component Assembly: Assemble the main beam, end beam, trolley, lifting mechanism and other components to form a complete crane structure.

Installation of electrical system: Install electrical equipment such as motors, control cabinets, sensors, limit switches, etc. to ensure the normal operation of the electrical system.

5. Debugging and testing

Preliminary debugging: Carry out preliminary debugging of the crane to check the coordination and operation of each component.

Load test: Carry out load test to ensure the safety and stability of the crane under rated load, and test the functions of safety devices such as overload protection and limit switches.

Performance test: Test the performance indicators of the crane such as lifting speed, running speed, braking effect, etc. to ensure that they meet the design requirements.

6. Quality inspection

Quality inspection: Carry out a comprehensive quality inspection of the crane, including appearance, size, performance, etc., to ensure compliance with relevant standards.

Safety assessment: Carry out safety assessment to ensure the normal operation of all safety devices and systems.

7. Delivery and installation

Packaging and transportation: Pack qualified cranes and prepare them for transportation to the customer site.

On-site installation: Carry out on-site installation according to customer requirements, including basic production and equipment debugging.

Training and handover: Train operators to ensure that they master the operation methods and safety precautions of the equipment and complete the handover work.

 

 

 

 

 

 

 

Material Inspection

Quality Inspection: Strict quality inspection is carried out on the purchased raw materials to ensure that they meet the design requirements and national standards.

Material Storage: Qualified materials are stored according to classification to prevent corrosion or damage.

Cutting and Forming

Steel Cutting: Use plasma cutting, laser cutting or flame cutting and other technologies to cut the steel according to the size of the design drawing.

Forming Processing: Form the steel plate through bending, rolling, welding and other processes to manufacture the main beam, end beam and other structural parts.

Welding

Component Welding: The cut and formed steel parts are welded into the main structures such as the main beam, end beam and trolley. The welding process needs to be strictly controlled to ensure the structural strength and welding quality.

Weld Inspection: Use non-destructive testing technology (such as ultrasonic testing, radiographic testing) to inspect the welds to ensure that there are no cracks or other defects.

Machining

Precision Machining: Precision machining is performed on the key components of the crane, such as wheel sets, bearing seats, pulleys, etc., to ensure their dimensional accuracy and surface quality.

Assembly of the whole machine

General assembly: On the basis of pre-assembly, the overall assembly of the crane is carried out, including the final installation of the main beam, end beam, lifting mechanism, walking mechanism, etc.

Commissioning and testing

Under dynamic conditions, the operating performance of the crane is tested, including the testing of lifting, walking, steering and other functions. The overall size of the assembled bridge crane is checked to ensure that all dimensions meet the design requirements.

Spraying and anti-corrosion treatment

Surface treatment Rust removal: Rust removal on the surface of the crane, common methods include sandblasting, pickling, etc. Primer spraying: Spray anti-corrosion primer on the treated surface to prevent metal oxidation and corrosion. Topcoat spraying Color spraying: Spray topcoat according to customer requirements or industry standards to give the crane a protective and decorative effect. Marking: After spraying, mark the crane's identification information in accordance with the specifications, such as model, rated load, etc.

Factory and installation

Packaging and transportation

Packaging protection: Protectively package the key components of the crane to prevent damage during transportation. Transportation arrangement: According to the equipment size and transportation conditions, select a suitable transportation method to transport the crane to the customer's site.

Acceptance and delivery

Customer acceptance

On-site acceptance: The customer conducts on-site acceptance of the crane according to the contract requirements and technical specifications to check the performance and quality of the equipment.

Problem rectification: If any problems are found, the manufacturer needs to rectify them in time to ensure that the equipment fully meets the customer's requirements. Delivery and use Operation training: The manufacturer usually trains the customer's operators to ensure that they can operate the crane correctly and safely.

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