Zomax QD Double Girder Overhead Crane is a classic open winch crane with a lifting capacity up to 450 tons. The lifting mechanism adopts the classic parallel axis arrangement, the trolley running mechanism adopts a low-speed shaft centralized drive structure, and the crane travelling mechanism has independent drives on both sides.
The crane’s spreader can be equipped with hook, grab, electromagnetic etc. depending on the form of picked up materials to satisfy different operation environments.
Durable, safe and reliable, this cranes has been a long-standing product from Zomax , well-suited for demanding environments like manufacturing, steel production and assembly lines, ensuring efficient and reliable material handling. Its proven performance makes it a versatile choice for various applications.
Classic open winch crane supported by two main beams with smooth movement and strength structure
Special design with high rigidity and durability
Independent drives on both sides for the crane travelling mechanism
Complete protection devices ensure safe and reliable
The spreader can be optional to satisfy different operational requirements.
A joint in the end beam, connected by bolts or pins, allows for convenient transport for main girders.
Power supply can be a safety busbar or angle steel to suit different environments and needs
High versatility of component, wide application, easy maintenance
| Lifting capacity | Up to 450 tons |
| Lifting height | Up to 100m |
| Span | Up to 60m |
| Rated voltage： | 220V/380V/400V/415V/660V, 50-60Hz, 3ph AC |
| Working class | A3-A8 |
| Temperature | Standard temperature: -20°C - +40°C. |
| Crane type | Double girder |
| Girder design | Box girder, compact box |
| Hoist motor | Lifting: single speed; Travelling: single speed |
| Trolley type | Open winch trolley |
| Control options | Pendant / Remote / Cabin |
| Environment | Indoors and outdoors |
| Safety functions | Hoisting safety limit switchOverload protectionHoisting motor thermal protectionTraveling Limit switchesAnti-collision, sound and light alarm devices, Circuit self-check protector, Flow phase lack protection,etc. |
Reliable Performance and durability
High capacity and duty Rating
Flexible operation and broad range of applications
High-quality construction at an reasonable cost
Ideal and safe for everyday use
Easy maintenance with accessible key parts
Full service and spare parts availability
Bridge Frame: The crane's main structure, made of two box-shaped main beams, two end carriage, and a walkway, spans across two supports to bear the load.
Travelling Mechanism: Controls the crane’s movement with a motor, brake, and reducer.
Trolley: Moves the crane laterally along the bridge, with a frame, lifting mechanism, and trolley travelling mechanism.
Lifting Mechanism: Facilitates vertical movement using a motor, transmission shaft, coupling, reducer, drum, etc.
Driver's Cabin: The operator's workspace, equipped with control systems, protection boxes, signals, and lighting.
Protective Devices: Includes overload limiters, large-screen displays, and safety features for secure operation.
The QD double girder overhead crane is primarily designed for heavy-duty lifting in industrial environments, such as manufacturing plants, warehouses, steel mills, and shipyards. With its high load capacity and reliable performance, it is ideal for lifting and moving heavy materials, machinery, and large components over long distances. Its flexibility allows it to be used in both indoor and outdoor applications, and its robust construction ensures safe and efficient operation in demanding working conditions. The crane can be customized to meet specific operational needs, making it a versatile solution across industries.
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