The Double Trolley Hook Bridge Crane (QE Type) is a heavy-duty overhead crane manufactured by Henan Mine, featuring two independent trolleys operating on a robust double-girner bridge structure for synchronized or separate lifting of extra-long and heavy loads. This crane allows both trolleys to work together in perfect coordination for lifting ultra-long workpieces such as 30-50 meter steel girders, ship sections, large transformers, and pressure vessels, while each trolley can also operate independently for multi-point handling to increase workflow efficiency. The "New Type" design achieves 15-30% weight reduction and 10-35% lower wheel loads compared to traditional models, with full variable frequency drive (VVFD) across all motions for stepless speed control, electronic anti-sway reducing load swing by up to 95%, inching movement for precise positioning, and working duty class A5 to A6 for continuous heavy service.

This crane is widely used in steel plants, hydroelectric projects, aerospace manufacturing, shipyards, automotive factories, coal processing plants, heavy machinery workshops, and large warehouses. Typical specifications include lifting capacity from (2.5+2.5) to (200+200) tons, span from 7.5 to 40 meters, lifting height from 6 to 30 meters, duty class A5 to A6, lifting speed 7.2–15.5 m/min, trolley speed 33–46 m/min, crane speed 30–105 m/min, power supply 380V/50Hz three-phase AC, and ambient temperature range from -20°C to +40°C.

Core Applications – Double Trolley Hook Bridge Crane
1.Steel Mills & Pipe Yards – Lifts and transports long steel pipes (up to 50 meters), large structural beams, thick steel plates, and heavy rebar bundles with two trolleys gripping both ends for stable transport without bending.
2.Precast Concrete Plants – Handles extra-long concrete beams (30-50 meters), bridge segments, concrete pipe piles, utility poles, and precast wall panels with synchronized lifting from multiple support points to prevent cracking.
3.Heavy Machinery Workshops – Positions large components including turbine shafts, generator rotors, wind turbine blades (60-80 meters), transformer cores, and large press frames with independent trolley operation.
4.Shipyards & Marine Construction – Moves large ship sections (bow, stern, midship blocks), propeller shafts, rudders, engine housings, and heavy deck machinery with balanced lifting for asymmetrical components.
5.Hydroelectric Power Plants – Installs and maintains large turbine assemblies, generator stators, pump housings, and long drive shafts with synchronized control ensuring balanced lifting and precise alignment.
6.Papermill Industry – Handles massive parent rolls (jumbo rolls), replaces heavy dryer felts and suction press rolls, and maintains Yankee cylinders with two trolleys synchronized using a spreader beam.