Key Components of a Double Girder EOT Crane

1) Bridge Girders:

• Two horizontal beams that span the width of the working area.
• Provide a stable and robust framework for supporting the trolley and hoist.
• Made from high-strength steel, typically in box or rolled section form.

2) End Trucks:

• Support the bridge girders and allow the crane to travel along the runway beams.
• Equipped with wheels or rollers that run on rails mounted on the runway beams.

3) Runway Beams:

• Fixed beams that run parallel to each other, supporting the end trucks and allowing the crane to move along the length of the building.
• Mounted on building columns or a freestanding structure.

4) Trolley and Hoist:

• The trolley moves along the top of the bridge girders and carries the hoist.
• The hoist is the lifting mechanism, typically an electric wire rope hoist, capable of lifting heavy loads.

5) Control System:

• Can be pendant controls, wireless remote controls, or cabin controls.
• Allows the operator to control the crane’s movements, including lifting, lowering, and traveling.

6) Power Supply System:

• Provides electrical power to the crane, typically through a festoon system or conductor bars.
• Ensures continuous power delivery to the hoist and trolley as they move.

Features and Advantages

High Lifting Capacity:

• Capable of handling much heavier loads compared to single girder cranes, typically ranging from 10 tons to several hundred tons.

Greater Span and Hook Height:

• Allows for larger spans and higher hook heights, making it suitable for wide and tall buildings.

Enhanced Stability:

• The double girder design provides superior stability and rigidity, reducing deflection and vibration during lifting operations.

Versatility:

• Can accommodate auxiliary hoists, walkways, maintenance platforms, and other accessories for enhanced functionality.

Safety:

• Equipped with advanced safety features such as overload protection, emergency stop, limit switches, and anti-collision devices.