The QN Series Double Girder Overhead Crane, engineered for both hook and grab applications, delivers robust performance for demanding material handling across diverse sectors. It is ideally suited for ports, manufacturing plants, workshops, power generation facilities, steel mills, cement producers, and the waste-to-energy industry.

Built for intensive A6 duty class operations, this crane is designed to handle heavy-cycle workloads with superior reliability.

Key Design & Structural Advantages:

• Robust Double Girder Design: Features double welding box girders, constructed from high-grade Q235B or Q345B steel, with beam deflection rigorously compliant with DIN/FEM standards for unwavering structural integrity.

• Precision Trolley System: The trolley moves on high-strength, hot-rolled 16Mn steel rails, ensuring smooth and durable travel.

• Long-Lasting Corrosion Protection: A triple-layer epoxy zinc-rich coating (120μm) provides exceptional resistance to wear and corrosion, maintaining a superior finish and extended service life.

• Secure & Stable Construction: High-strength bolts connect the girders and end beams, guaranteeing overall structural precision and strength. End beams are fitted with anti-friction bearing wheels, buffer blocks, and derailment prevention plates.

• Safe Maintenance Access: A dedicated maintenance walkway with a non-slip patterned plate and a 1050mm high handrail is installed along the main girder for operator safety.

Comprehensive Safety & Protection Systems:

Your operational safety is paramount. The QN crane integrates multiple protective features:

• Overload Limiter: Automatically restricts hoisting operations if a safe load is exceeded, permitting only lowering motions.

• Precise Travel Limiting: Equipped with primary and final limit switches for all motions. An optional wireless anti-collision system is available for enhanced safety.

• Anti-Falling Device: The trolley and crane's Three-in-One electric hoists include a fall-prevention mechanism.

• Emergency Stop & Power Safety: An immediate shutdown is possible via the main contactor at the control station. The system also includes voltage loss and current overload protection.

• Impact Absorption: High-quality polyurethane buffers are installed on the trolley and bridge to absorb energy from over-travel.

• Enhanced Hook Security: A safety hook latch prevents disengagement of the load.

• Operator Awareness: An audible and visual alarm alerts personnel in the crane's operating path.

• Weather Protection (Outdoor): Key components, including the lifting mechanism, electric cabinet, and drive systems, are shielded with rain covers.

Note on Configuration: The lifting capacity calculation includes the grab's self-weight. The grab is designed to open in a direction perpendicular to the main beams for optimal operational efficiency.