Shield Gantry Crane

Shield gantry crane is a heavy-duty equipment specially for tunnel construction, to lift and transport large components such as shield machine parts and pipe pieces. Its structure is mainly composed of gantry, lifting mechanism, walking mechanism, electrical system and control system. As the main frame. the gantry is usually made of high-strength steel and has a door-shaped structure that spans the tunnel construction area to ensure sufficient stability and load-bearing capacity.

The lifting mechanism includes a main lifting mechanism and a secondary lifting mechanism. Main lifting mechanism is responsible for lifting heavy shield machine components, and the secondary lifting mechanism is to assist in lifting and precise positioning. The walking mechanism enables the crane to move along the track, usually equipped with a motor drive and braking system to ensure smooth operation within the tunnel. The electrical system provides power and control signals for the crane, including motors, cables, distribution boxes and other components. The control system realizes the various actions of the crane through the operating table or remote control, which has high accuracy and safety. Its overall structure is compact. It could adapt to the narrow spaces in the tunnel, and has high load-bearing capacity and flexibility. This shield gantry crane type is an indispensable key equipment in shield construction.