ERECTOR OF SHIELD MACHINE

PROBLEM TO BE SOLVED: To assemble a large-scale segment which capable of being used for a large-diameter shield machine without upsizing a rotatable frame etc. SOLUTION: This large-scale segment comprises: an annular supporting frame 3 which is arranged in the shield frame of the shield machine; the annular revolving frame 4 which is mounted on the outer periphery of the supporting frame 3 in such a manner as to be rotatable in the circumferential direction of the shield frame; a lifting beam 5 which is mounted on the outer periphery of the rotary frame 4 in such a manner as to be movable in the radial direction of the shield frame; and a holding portion 6 which is provided on the lifting beam 5 so as to hold the segment. The supporting frame 3, the revolving frame 4, the lifting beam 5 and the holding portion 6 are arranged along the radial direction of the shield frame. COPYRIGHT: (C)2009,JPO&INPIT