MOUNTED STRUCTURE OF EARTH PRESSURE GAGE AND TUNNEL EXCAVATOR

摘要

PROBLEM TO BE SOLVED: To easily replace an earth pressure gage without allowing earth and sand into the working chamber of an excavator main body. SOLUTION: An excavator main body is partitioned inside into a chamber 18 and a working chamber 23 by a bulkhead 17, and a through hole 34 passing through the chamber 18 and the working chamber 23 is formed in the bulkhead 17. A rotating plate 37 that freely rotates to close the through hole 34 is mounted on the side of the bulkhead 17 facing the working chamber 23, and an earth pressure gage 22 for measuring earth pressure within the chamber 18 is mounted on the rotating plate 37 and supported in such a way that it freely moves between an adaptive position where it faces the through hole 34 and a non-adaptive position.