| 摘要 |
<P>PROBLEM TO BE SOLVED: To configure a fluid pressure driven copy cutter device, where fluid pressure to detect wear of the copy cutter is supplied to an inside thereof, to be adaptable to a constraint on an installation space. <P>SOLUTION: A copy cutter device 10 comprises: a copy cutter 20 provided on a cutter head 110 of a shield machine; and a hydraulic cylinder 30 which is provided on the cutter head 110 and moves the copy cutter 20 forward/backward to/from an outer periphery side of the cutter head 110. The hydraulic cylinder 30 has: a first hydraulic pressure chamber 36 which moves the copy cutter 20 to the outer periphery side of the cutter head 110 with hydraulic pressure increased by a hydraulic circuit 140 of the shield machine; a second hydraulic pressure chamber 38 which moves the copy cutter 20 to an inner periphery side of the cutter head 110 with the hydraulic pressure increased by the hydraulic circuit 140; and an oil passage 31 to supply oil from the first hydraulic pressure chamber 36 to an inside of the copy cutter 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
