LOWER PART BRACING DEVICE OF AUGER SCREW SHAFT IN MULTI SPINDLE AUGER MACHINE

摘要

PURPOSE: To efficiently execute extension work of rods, particularly the extension work in the construction of a corner part, in a multi spindle auger machine allowing the extension of rods to have a large excavation depth. ;CONSTITUTION: A rotating device 2 having the axial line of a leader 64 is the rotating center is mounted on the lower end non-rotating part 54a of the leader 54, and a lower arm 3 and an upper arm 4 are provided on the rotating device 2 and the rotating part 54b of the leader 54, respectively. A guide bracket 5 is supported by the upper and lower arms 3, 4, and a lower part bracing body 1 is installed to the guide bracket 5. The lower part bracing body 1 is movable following the rotation of the leader 54.;COPYRIGHT: (C)1994,JPO