Double Girder Overhead Cranes

Double Girder Overhead Cranes

DoubleGirder Overhead Cranes are heavy-duty lifting systems designed for handling large and bulky loads in industrial environments. These cranes consist of two parallel bridge girders supported on end trucks, with a crab-mounted hoist that travels along the girders. Known for their high load-carrying capacity (up to 250 tons), extended span lengths, and greater hook height, double girder cranes are ideal for steel plants, power stations, automotive factories, warehouses, and ports. They can be equipped with electric wire rope hoists, radio remote controls, inverter-based drives, and advanced safety features, ensuring efficient, precise, and safe material handling in demanding operations.

FAQs

1. What is a double girder overhead crane?
   A crane with two parallel girders that support the hoist and trolley mechanism for lifting heavy loads.
2. How does it differ from a single girder crane?
   It provides higher lifting capacity, greater span, and better hook height than single girder versions.
3. What is the maximum capacity of these cranes?
   Standard designs can lift from 5 tons to 250 tons or more with custom engineering.
4. Where are double girder cranes typically used?
   In heavy manufacturing, steel plants, power plants, foundries, and ports.
5. Can they be customized for hazardous environments?
   Yes, with flameproof motors, explosion-proof controls, and other safety features for hazardous areas.
6. Do they support automation and remote operation?
   Yes, modern cranes support PLC, SCADA, and wireless remote systems for automated handling.
7. What is the typical span range for these cranes?
   Spans can go up to 40 meters or more, depending on the design.
8. Are maintenance platforms included?
   Yes, most double girder cranes include walkways or maintenance platforms for easy access.
9. What kind of hoist is used?
   Typically a crab-type electric wire rope hoist mounted on a trolley running between the girders.
10. Are double girder cranes expensive?
    While costlier than single girder cranes, they offer long-term value through higher performance and durability.

Applications

• Heavy manufacturing industries (steel, cement, machinery)
• Shipbuilding and port operations
• Power plants and substations
• Automobile assembly and tooling plants
• Warehouses with high load-handling requirements
• Aircraft hangars and maintenance bays

Benefits

• High Load Capacity – Ideal for heavy-duty lifting from 10 tons to 250+ tons
• Increased Hook Height – Allows higher vertical lifting range for taller loads
• Sturdy & Long-Lasting – Built to withstand continuous, rugged operations
• Customizable Design – Tailored to specific span, lift height, and control needs
• Superior Load Distribution – Evenly distributes weight over double girders, reducing stress
• Platform for Maintenance – Easier access to hoist, motors, and controls
• Enhanced Safety – Includes overload sensors, anti-collision devices, limit switches
• Scalable Integration – Supports automation and future capacity upgrades

Uses

• Lifting and transporting raw materials in foundries and steel mills
• Installing turbines, generators, and other heavy equipment in power plants
• Assembling large vehicles or components in automotive industries
• Container handling and cargo transfer in shipyards and freight terminals
• Construction of heavy infrastructure components (bridges, girders)
• Maintenance of large machinery in workshops and industrial yards

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