1. Shield gantry crane is mainly used for the installation of  cutter and shield of underground non-excavation equipment shield machine and the hoisting of tunnel support pipe in the construction process.

2. The crane uses a sling spreader that can be rotated 360 degrees，which is suitable for the installation of the cutter head at different angles.

3. The crane adopts a double-trolley structure, and the two trolley can be linked together to lift the cutter head, and the lifting piece can also be separately operated.

4. The open type gear transmission is adopted for hoisting, and the cost is saved.

Product diagram and technological specifications: