POSITION CORRECTING DEVICE FOR SWING TYPE JACK IN EARTH RETAINING DEVICE OF EXCAVATED TRENCH

摘要

PROBLEM TO BE SOLVED: To provide a position correcting device for a jack for preventing the jack from being slantly sagged down to an excavated trench side when the jack swingingly rotates so as to parallel a trench wall side in a swing type jack mechanism in an earth retaining device of the excavated trench.;SOLUTION: When the jack swingingly rotates so as to come into parallel relation with the trench wall side, a stopper placed between a strut or a connector stopper plate and a plane coming into contact with a connector on the jack side and forming a gap between them is provided.;COPYRIGHT: (C)2004,JPO&NCIPI