Rail-mounted container gantry cranes are suitable for handling and loading/unloading international standard containers in container yards and railway container transfer stations. They are electric-powered cranes supported on rails by steel wheels. Their design, manufacturing, and inspection comply with domestic and international standards such as DIN, FEM, IEC, AWS, GB, as well as newly promulgated national standards. This crane features stable performance, long service life, high production efficiency, wide operating range, and convenient use, maintenance, and upkeep. It consists of the crane, gantry frame, cable reel, trolley, and specialized container spreader. It is equipped with comprehensive safety indications and overload protection devices to effectively ensure the safety of operators and equipment. The electrical drive adopts fully digital AC frequency conversion and PLC control speed regulation technology, offering flexible control and high precision. Standard components from domestic and international brands ensure the overall quality of the machine.
The main structural components of the rail-mounted container gantry crane are as follows:
| Component | Description & Function |
|---|---|
| Metal Structure | Includes the main girder and legs (typically divided into rigid and flexible legs), forming the main gantry frame. The main girder can be designed as without cantilever, single cantilever, or double cantilever to adapt to different yard layouts. |
| Hoisting Mechanism | The core of the crane, responsible for the vertical lifting of containers. Typically uses frequency control to achieve smooth lifting and precise positioning. |
| Trolley Travel Mechanism | Installed on the main girder, it drives the spreader laterally, enabling precise placement of containers across the width of the yard. |
| Crane Travel Mechanism | Drives the entire crane longitudinally along rails laid on the ground, covering the entire operating length of the yard. |
| Specialized Container Spreader | The key component for grabbing and locking containers. Common types include telescopic spreaders that can adapt to different container sizes such as 20-foot and 40-foot. |
| Electrical & Control System | Utilizes fully digital AC frequency control and PLC (Programmable Logic Controller). It acts as the “brain” of the machine, controlling the coordinated and safe operation of all mechanisms. |
| Operator’s Cab | The workspace for the operator. Typically offers a good field of vision and is equipped with a联动 console, status monitoring screens, and various safety indication devices. |
Rail-mounted container gantry cranes are specifically designed for logistics nodes requiring large-scale, high-efficiency container handling. They are mainly used in:
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