Harsiddhi Crane offers high‐quality Double Girder EOT Cranes that have a very high load capacity of Up to 100 MT. These Double Girder EOT Cranes are in massive demand in heavyweight industries like shipyards, metal industries, construction sites, etc. Our Double Girder EOT Cranes ensure low dead weight because of the box girder design, and the bolted design ensures that these are geometrically reliable during assembly as well. Double Girder EOT Cranes can be fitted with walkways and assembly platforms, making them suitable for maintaining workshop fittings.
Typical Specifications (These can vary widely based on the specific application):
- Lifting Capacity : 2 tonnes to over 100 tonnes..
- Span : 3 meters to over 36 meters.
- Lifting Height : 5 meters to over 20 meters (and sometimes significantly more).
- Lifting Speed : Variable, typically ranging from 1 to 11 m/min.
- Cross Travel Speed : Variable, typically ranging from 5 to 30 m/min.
- Long Travel Speed : Variable, typically ranging from 5 to 30 m/min.
- Power Supply : Typically 3-phase AC, with varying voltage and frequency depending on the region and application.
- Duty Cycle/Working Class : Designed for medium to heavy-duty applications (A3 to A8 according to ISO standards).
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Description:
A double girder crane utilizes two parallel bridge girders that support the trolley and hoist mechanism. The trolley, which carries the hoist, typically runs on rails mounted on the top of these girders. This design offers several advantages:- Higher Lifting Capacity: The dual girder structure provides increased strength and stability, allowing these cranes to handle significantly heavier loads, often ranging from several tonnes up to hundreds of tonnes.
- Longer Span: Double girder crane can be engineered for much longer spans, making them suitable for large factory bays, warehouse, and outdoor applications.
- Enhanced Stability and Reduced Sway: The two-girder system minimizes load sway and provides more stable lifting and movement, especially with heavier items.
Components:
- Bridge Girders: Two parallel horizontal beams that form the main structural element of the crane. They are typically constructed from robust steel.
- End Carriages: Located at each end of the bridge girders, these house the wheels that allow the entire crane to travel along the runway beams. They include motors and gearboxes for the long travel motion.
- Trolley: A wheeled assembly that runs along the top rails of the bridge girders, supporting the hoist. It includes a motor and gearbox for the cross-travel motion.
- Hoist: The lifting unit that raises and lowers the load. It consists of a motor, gearbox, drum, and lifting medium (wire rope or chain).
- Runway Beams: Fixed structural beams that run the length of the building or work area, supporting the end carriages and allowing the crane to move horizontally.
- Controls: These can include pendant pushbuttons, radio remote controls, or operator cabins, allowing for precise control of all crane motions.
- Electrical System: Includes wiring, motors, control panels, limit switches (for safety), and power supply systems (e.g., festoon systems, conductor bars).
Applications:
Double girder cranes are essential in industries requiring the lifting and movement of heavy or bulky materials, including:- Heavy Manufacturing : Lifting and moving large machinery, engines, turbines, generators, and other heavy components in factories.
- Steel Industry : Handling steel coils, sheets, bars, and other steel products in steel mills and stockyards, including handling molten steel.
- Construction : Lifting and positioning heavy construction materials like steel beams, precast concrete panels, and heavy machinery on construction sites.
- Automotive Industry : Moving large parts and machinery during the assembly process.
- Mining : Handling heavy equipment and materials in mining operations.
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