Weihua self-erecting gantry crane is a special type of gantry crane utilizing segmented legs and jack-up technology. It is specifically designed for narrow or complex sites inaccessible to large mobile cranes, enabling rapid installation and adjustable height, and is widely used in various industrial fields.
The self-erecting gantry crane has a gantry structure similar to a traditional U-type gantry crane, with the core difference lying in the leg design. To adapt to special work sites where large mobile cranes cannot enter, its legs are manufactured in multiple segments, each equipped with a jack-up support base. On-site, the trolley, main girder, and end carriages are assembled first. Then, the leg segments are gradually jacked up using jacks and fixed via flange connections. Finally, the bottom crossbeam and crane travel mechanism are installed. This design makes it particularly suitable for modular installation and dismantling in spaces with limited access.
| Component | Description |
|---|---|
| Gantry | U-type gantry structure welded from high-strength steel, ensuring good stability and load-bearing capacity. |
| Legs | Unique segmented design, each segment equipped with a jack-up support base, enabling on-site self-erecting assembly and height adjustment. |
| Main Girder & End Carriages | Pre-assembled together with the trolley, forming the upper main structure of the crane. |
| Crane Travel Mechanism | Drives the entire crane longitudinally along the ground rails, typically using multi-wheel drive for smooth operation. |
| Trolley & Hoisting Mechanism | The trolley travels transversely along the main girder rails and is equipped with a hoisting mechanism responsible for lifting and lowering the load. |
| Electrical System | Utilizes fully digital AC variable frequency technology and PLC control system for high-precision operation. |
The self-erecting gantry crane is widely used in industries such as machinery, metallurgy, mining, electric power, railways, ports, petroleum, and chemical engineering. Specific scenarios include:
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