Heavy Duty Double Girder Gantry Crane for Construction

1. Product Introduction
Gantry cranes are versatile lifting equipment that operate by a trolley equipped with a winch and can move horizontally along rails or beams. These cranes offer an efficient alternative to traditional overhead cranes, especially in environments where structural modifications are not feasible. Their flexibility allows them to be easily disassembled and relocated, making them ideal for temporary or mobile applications.
Our Heavy Duty Double Girder Gantry Cranes are designed to handle heavy loads, with capacities up to 700 tons and spans exceeding 50 meters. They are suitable for use in shipyards, ports, rail yards, factories, and warehouses, where reliable and smooth lifting operations are essential.
The double girder design ensures stability and strength, while the modular construction allows for customization based on specific project requirements.



2. Technical Specifications
1- Lifting Mechanism
- Open winch trolley with motor, gearbox, hydraulic brake, drum, hook, sheaves, coupling, and brake drum
- Rigid box-type trolley frame
- Wound rotor 3-phase asynchronous motor
- Hardened teeth gearbox
- Hydraulic drum brake
- Plate-rolled drum kits
2- Driven Bogie and Bottom Beam
- Forged flanged wheels
- Rigid welded box-type beam
- Compact layout
3- Girders and Legs
- 2 main girders and 4 legs made of welded box type
- Material: High-quality carbon steel (Q235B or Q345B)
- Main girder connected by high-strength bolts
- Weld joints tested by X-ray or ultrasonic examination
- Modular design
- Designed deflection ≤ 1/800 of span
4- Control
- Cabin control
- Optional independent pendent control
- Optional wireless control
5- Electrical Parts
- Conductor power supply
- Hoist and crane movements are independent and can run simultaneously
- Protection degree IP55
- Components arranged for easy maintenance
- Festoon cables suspended on cable saddles, running in galvanized C-track
6- Painting
- Corrosion protection via mechanical shot blasting SA 2.5
- First layer: Epoxy 30 microns
- Second layer: Epoxy 30 microns
- Third layer: Polyurethane 40 microns
- Average thickness: ~100 microns
- Color: Yellow or Orange as per customer request
7- Safety Protection
- Emergency-off switch
- Overload protection
- Earth protection
- Zero position protection
- Cross travel and long travel protection
- Lifting travel protection
- Motor overheating protection
- Rainproof devices included
- Alarm bell and lamp
- Anemometer and aviation obstruction light available as optional

3. Factory View

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