STRANGE-LIKE CORRECTION FITMENT OF SEGMENT

摘要

PROBLEM TO BE SOLVED: To provide a strange-like correction fitment of segments which is capable of installing segments to any kind of a shield machine without any problems. SOLUTION: This strange-like correction fitment of segment 12A is able to install a part of or all of shield jacks to the tip portion of each piston 13 for a shield jack 9 or a group of the shield jacks 9 at adequate intervals in the peripheral direction for driving the shield machine 1. And this strange-like correction fitment 12A comprises a base portion 14 provided at the tip of the piston 13 of the shield jack 9, a segment contact portion 15 provided in a slidable state in a radius direction of a tunnel relative to the base portion 14, and a strange-like correction jack 19 capable of moving the segment contact portion 15 in the tunnel radius direction. Also, the segment contact portion 15 is equipped with a chin portion 18a linked to a peripheral portion of the segment already installed. COPYRIGHT: (C)2004,JPO&NCIPI