Double Girder Beam Crane

A Double Girder Beam Crane is a type of overhead crane designed for heavy-duty lifting operations. This crane uses two parallel girders (beams) to support the hoist and trolley system, making it suitable for handling larger and heavier loads compared to single girder cranes. The double girder design offers improved load capacity, better stability, and more efficient use of space in industrial environments. Key Features of a Double Girder Beam Crane: 1. Design & Structure Two Parallel Girders (Beams): The crane features two strong parallel girders that are mounted on the runway or support structure. These beams provide the crane with additional strength and load-carrying capacity. Bridge: The bridge connects the two girders and moves along the runway system, carrying the hoist and trolley. This bridge allows the crane to travel along the length of the workspace, lifting and lowering the load as needed. Box or I-Beam Construction: The girders can either be box-shaped or I-beams. Box girders provide higher strength and rigidity, which is crucial for handling heavy loads. I-beams are typically used in lighter applications where the load capacity is lower. 2. Load Capacity Double Girder Beam Cranes are designed to handle much larger loads compared to single girder cranes. They are ideal for lifting heavy materials and equipment. Load Capacities: These cranes can lift loads ranging from 10 tons to several hundred tons, depending on the specific design and the application requirements. 3. Traveling Mechanism Trolley and Hoist: The hoist and trolley are mounted on the bridge and can travel along the length of the girders. The trolley moves horizontally, while the hoist raises and lowers the load. Electric Drives: The crane typically uses electric motors to power both the hoist and trolley for precise control of the crane's movements. This makes the crane suitable for lifting heavy materials with high accuracy. Runway Tracks: The crane bridge travels along the runway tracks, which are typically mounted on either side of the workspace. 4. Applications Heavy Manufacturing: Commonly used in factories and plants for lifting large components such as steel beams, machinery, or raw materials. Material Handling: Ideal for handling bulky materials in warehouses, shipping yards, and construction sites. Automotive Industry: Used for lifting large automotive parts and assemblies. Shipbuilding and Steel Industry: Double girder beam cranes are often used in shipyards and steel mills for lifting heavy and oversized loads. 5. Advantages High Load Capacity: The double girder design offers greater load-bearing capacity, making it ideal for lifting heavy or oversized objects. Greater Hook Height: Double girder cranes typically have higher hook heights, allowing them to lift objects to a greater vertical distance compared to single girder cranes. Stability and Durability: The two-girder configuration provides better structural integrity and stability, even when handling large or unevenly distributed loads. Larger Span: The double girder design allows for wider spans, which means the crane can cover larger areas, improving operational efficiency. Enhanced Lifting Speed and Precision: With electric motors and modern control systems, these cranes offer precise control over lifting speeds, helping in both delicate and heavy lifting tasks. 6. Safety Features   Overload Protection: Prevents the crane from lifting loads that exceed its rated capacity, reducing the risk of accidents and damage to the crane. Limit Switches: Installed on the trolley, hoist, and bridge to prevent over-travel of the crane and ensure that the crane does not exceed safe operating limits. Emergency Stop System: Provides an immediate shutdown of the crane in case of an emergency, improving operator safety. Anti-sway Technology: Helps reduce load swinging during movements, ensuring safer operations when handling sensitive or heavy loads.