| 摘要 |
PROBLEM TO BE SOLVED: To provide a shield machine capable of preventing sediment from being retained and consolidated in a central part of a cutter.SOLUTION: A shield machine includes an annular cutter support member 20 which is provided in a front central part of an excavator, a plurality of cutter spokes 10, 10... which are radially elongated outward from the cutter support member 20, and a center cutter 25 which is provided astride an opening 21 of the cutter support member 20. The cutter support member 20 is connected to a revolving superstructure 51, which is provided in a bulkhead 50, via a plurality of support rods 22, 22... which are elongated backward. |
