The world's largest tunnel shield machine

The overall length is 1 10 meter and the weight is about 7000 tons. It is called the first shield machine in the world, and its maximum excavation speed can reach 3.6 meters per hour. It is even rumored that it can dig through the earth, which is almost a god-like existence in the shield machine industry.

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The scale of this world's most powerful shield machine, like the heaviest motorcycle in the world, is almost unimaginable for ordinary people, because it is mainly used to dig tunnels, with 14 17 annular segments installed on it, which makes its speed reach 3.6 meters per hour, almost three times that of traditional tunnel shield machines. This Bertha shield machine has a diameter of about 17.45 meters, a length of about 1 10 meters and a total weight of about 7,000 tons. It is almost the largest tunnel shield machine in the world, and many new technologies and functions have been added.

The cutter head of shield machine is designed as spoke type, * * * has 8 spokes, and each spoke has 6 broadsword seats, so different cutters can be installed as required. The whole cutter head is driven by 24 motors.