COMPACTION DEVICE OF EARTH UNDER PIPE

摘要

PROBLEM TO BE SOLVED: To save the labor by efficiently performing a work for compacting back-filled earth after back filling earth to the circumference of an existing pipe in the repair of a pipeline without damaging the pipe surface. SOLUTION: A portal frame 41 is arranged on the tip part of the arm 5a of a hydraulic bacikhoe 5C through a rotating mechanism 40 so as to straddle the existing pipe 1, and vibration compacters 42 and 43 are installed to the lower part of the frame 41. A guide protector 44 is arranged on the inside of the frame 41.