Gantry crane with shield (DMG for short) is mainly used for installation of cutter and shield of shield machine, which is underground trenchless device,and used for lifting of duct piece supporting tunnel during work progress.

 

Professional spreader with 360° rotation is fit for installation of cutter from different angles.

 

Double trolley mechanism is applied for lifting cutter by tandem operation or lifting duct piece by separate operation.

 

Exposed gear drive is applied for lift mechanism to save cost.