1.Cutter bit
This is a part for cutting ground. It is necessary for the appropriate shapes and materials for the ground conditions to be selected.
2. Cutter drive unit
This unit consists of motors and a gear in order to rotate the cutter head.
3. Articulation cylinder
This is a device that provides support for curve negotiation by making an angle at the joint between some bodies of shield machine.
4. Feeding slurry pipe
This is a device for feeding slurry into the chamber.
5. Discharging slurry pipe
This is a device for discharging the ground taken in the chamber by using slurry flow.
6. Erector
This is a device for erecting the segment by gripping the piece and bringing it to the erecting position. Multiple actuators are equipped in order to rotate and move forwards/backwards and in the radial direction.
7. Rear scaffold
This is a scaffold for worker to stand on in order to erect the segment.
8. Segment reforming device
This is a piece of equipment to maintain the roundness of the erected segment by extending it from inner side.
9. Tail seal
This is a device that prevents the intrusion of ground water and soil into the machine by sealing the gap between the shield machine and segment.
10. Thrust cylinder
This is a device to propel the shield machine by obtaining the reaction force from the segment erected by erector.
11. Cutter chamber
This is a room in order to keep ground excavated by the cutter head.
12. Cutter head
This is a device equipped with a cuter bit and excavates ground. Generally, a spoke type is applied in order to efficiently take the ground in.