The Three Trolley Hook Bridge Crane (QES Type) is a heavy-duty overhead crane manufactured by Henan Mine, featuring three independent trolleys operating on a robust double-girder bridge structure for handling extra-long, heavy, or unbalanced workpieces with exceptional flexibility. This crane allows all three trolleys to operate independently for multi-point lifting, while any two or all three trolleys can be synchronized for coordinated handling of ultra-long loads such as 50-meter paper dryer cylinders, hydroelectric turbine shafts, large steel girders, and ship sections. The "New Type" design achieves 15-30% weight reduction and 10-35% lower wheel loads compared to traditional cranes, with full variable frequency drive (VVFD) across all motions for stepless speed control, electronic anti-sway reducing load swing by up to 95%, and working duty class A5 to A6 for continuous heavy service.

The three-trolley hook bridge crane has the same structural form as the QD type crane. It is equipped with three trolleys, and two trolleys can be used simultaneously or one trolley can be used alone. It is widely applied in the papermaking industry.

Core Applications – Three Trolley Hook Bridge Crane
1.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 while the third trolley provides auxiliary lifting for roll grabs.
2.Steel & Pipe Manufacturing – Lifts and transports long steel pipes (up to 50 meters), large structural steel beams, thick steel plates, and heavy rebar bundles with two trolleys gripping both ends for stable transport without bending.
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 allowing one trolley to load while another unloads.
4.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 during assembly operations.
5.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 or irregularly shaped marine components.
6.Precast Concrete Plants – Handles extra-long concrete beams (30-50 meters), bridge segments, concrete pipe piles, utility poles, and precast wall panels with two or three trolleys working together from multiple support points to prevent cracking.