20 Ton Double Girder Overhead Crane with Good Standard
Overview
The double girder overhead crane is designed, manufactured, and inspected in strict accordance with national standards, while also partially adopting advanced international standards such as FEM, DIN, and IEC. This combination ensures a high level of reliability, safety, and technical maturity, making the crane suitable for demanding industrial environments. Every stage of production follows standardized procedures to guarantee consistent quality and long-term performance.
Compared with conventional QD-type bridge cranes, this double girder overhead crane features a significantly optimized structural design. Its overall self-weight is reduced by approximately 15–30%, while wheel pressure is lowered by about 10–35%. These improvements reduce the load on the plant structure, lower civil construction requirements, and help customers save on workshop building and foundation costs, especially in new factory projects or upgrades.
The crane’s transmission system uses high-performance components to ensure smooth and efficient operation. All reducers adopt hardened gear surfaces with high-precision gear pairs, providing excellent wear resistance and long service life. In addition, steel wire rope drums, forged wheels, and frequency conversion speed control systems are used to enhance operating stability, positioning accuracy, and energy efficiency.
As a new-generation lifting solution, this crane delivers both economic and social benefits. It is widely used in machinery manufacturing, assembly lines, petrochemical plants, warehousing and logistics centers, power construction projects, papermaking industries, and railway facilities, where high efficiency, durability, and performance are essential.
Intelligent Protection Systems
Visual Monitoring System: The double girder overhead crane is equipped with an advanced visual monitoring system that uses real-time cameras and intelligent diagnostic tools. This system allows operators to clearly observe lifting operations, load positioning, and surrounding conditions from a safe location. Continuous monitoring helps identify potential risks early, reduces blind spots, and improves overall operational awareness, especially in complex or high-risk working environments.
Smart Control System: A modern smart control system integrates PLC automation, variable frequency drives (VFD), and optional 5G connectivity. This combination ensures precise control of crane movements, smoother acceleration and deceleration, and stable operation under varying loads. Intelligent control logic enhances responsiveness, reduces mechanical stress, and improves reliability while supporting remote operation and data monitoring.
Anti-Sway Technology: Advanced anti-sway technology effectively minimizes load swing during lifting and traveling. By automatically adjusting motion parameters, the system ensures accurate load positioning and faster cycle times. This not only improves work efficiency but also significantly enhances safety by reducing the risk of collisions and load instability.
Automated Safety Features: The double girder overhead crane incorporates multiple automated safety mechanisms, including overload protection, limit switches, emergency stop functions, and fault alarms. These systems work together to protect both personnel and equipment, ensuring safe, stable, and compliant crane operation in demanding industrial applications.
Benefits of Choosing Double Girder Overhead Cranes
♦Stable Performance: Double girder overhead cranes are engineered for demanding industrial operations where reliability is critical. Their robust structural design and high-quality components minimize unexpected downtime and reduce long-term maintenance needs, ensuring consistent and dependable lifting performance even under continuous or heavy-duty use.
♦Easy Maintenance: The modular construction allows key components to be accessed, removed, or replaced quickly. Patented L-type housing wheels and standardized assemblies simplify inspection and servicing, reducing maintenance time and lowering overall operating costs throughout the crane’s service life.
♦Long-Term Durability: Equipped with hardened and precision-ground gears and pinions, these cranes operate with low vibration and noise levels, typically below 85 dB. This creates a safer and more comfortable working environment. The gearbox system is built for durability and is supported by a standard 10-year warranty, reflecting long-term reliability.
♦In-House Manufacturing for Quality Control: Core components such as gearboxes, couplings, wheels, electrical panels, and girders are manufactured in-house by SEVENCRANE. This ensures strict quality control, consistent standards, and shorter delivery times.
♦True Crane Manufacturing Expertise: Unlike simple fabricators, SEVENCRANE provides complete solutions by designing, engineering, and manufacturing entire crane systems, delivering optimized performance and dependable lifting solutions tailored to real-world applications.
