An electric double girder overhead crane is specially designed for demanding industrial environments, such as workshops used for smelting aluminum, magnesium, and other electrolytic non-ferrous metals. This type of crane is engineered to handle heavy-duty lifting tasks while ensuring a high level of operational safety and reliability. The overall system consists of a box-type bridge structure, crane traveling mechanism, trolley, lifting mechanism, and advanced electrical control equipment.
To address the unique safety risks in electrolytic production environments, the double girder overhead crane is equipped with multiple insulation devices installed at critical positions. These insulation measures effectively prevent electrical current from being transmitted from live equipment through lifted loads to the crane structure, protecting both the operator and the equipment. As a heavy-duty crane, the main hoisting mechanism is fitted with a double braking system, ensuring safe and controlled lifting even under high load conditions. All crane movements are operated from a fully enclosed operator cabin.
The bridge structure adopts a welded box girder design manufactured using automatic submerged arc welding, providing excellent strength, rigidity, and long-term durability. The trolley features a reliable I-steel track cable conductive system, ensuring stable power supply during operation. For enhanced reliability, the lifting mechanism can be equipped with an additional set of hoisting devices according to operational requirements.
Key Features
♦Advanced European Technology: Designed in accordance with European standards, this double girder overhead crane adopts a modular and lightweight structure. The reduced self-weight and lower wheel pressure improve safety and reliability while supporting a green, energy-saving operating concept.
♦Compact, Low-Headroom Design: The overall crane height is reduced by up to 20%, significantly lowering workshop construction costs. Its compact configuration maximizes available working space and allows higher hook lifting height within limited building clearance.
♦Fully Variable Frequency Control: Both traveling and hoisting mechanisms use integrated three-in-one motor reducers with VFD control, ensuring smooth acceleration, stable operation, and precise load positioning.
High Working Efficiency: With a duty class ranging from M5 to M8, the crane is suitable for medium to heavy-duty applications and high-frequency lifting operations.
♦Customized Engineering Solutions: The double girder overhead crane can be tailored to specific application requirements, including span, lifting height, control mode, and working environment.
♦Lightweight Structure: Optimized steel structure design reduces stress on runway beams and foundations while maintaining high load capacity.
♦Low Noise & Smooth Operation: Frequency conversion speed regulation minimizes vibration and operating noise, improving workplace comfort.
♦Reduced Maintenance Costs: Modular components and high-quality parts result in less wear, easier servicing, and lower long-term maintenance expenses.
♦Precision-Manufactured End Beams: End beams are made from welded rectangular tubes and machined by boring and milling equipment, allowing fast and accurate bolt-on assembly with the main girders.
Main Components
♦Hoist and Trolley System: The hoist is mounted on a motorized trolley that travels along the top of the bridge girders. This system is responsible for lifting, lowering, and accurately positioning loads. With smooth variable-speed control, the trolley enables precise horizontal movement, making it ideal for handling heavy or sensitive materials with high positioning accuracy.
♦Bridge Girders: The electric overhead crane features two parallel main girders that form the core load-bearing structure. Manufactured from high-strength structural steel, these girders provide excellent rigidity, stability, and resistance to deformation. Their robust design ensures long service life and reliable performance under heavy-duty working conditions.
♦End Carriages (End Trucks): Installed at both ends of the bridge girders, the end carriages support the crane structure and connect it to the runway rails. Each end carriage is equipped with precision-machined wheels and a reliable drive system, ensuring smooth, stable, and synchronized travel along the crane runway.
♦Control System: The control system offers flexible operation modes to suit different working environments. Options include pendant control for ground operation, radio remote control for improved safety and visibility, and an enclosed operator cabin with ergonomic layout for long-term, high-intensity operation. Advanced electrical components ensure safe, efficient, and responsive electric overhead crane control.
With standardized and modular components, this double girder overhead crane offers easy maintenance and high interchangeability of parts. The spacious control cabin provides a wide field of view, allowing flexible, precise, and efficient operation in harsh industrial environments.
