Title:
TRIAL DIGGING METHOD
Document Type and Number:
Japanese Patent JP2017155547
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve work efficiency without damaging an underground buried object in trial digging work.SOLUTION: A trial digging device 2 comprises a hydraulic backhoe 6, and a trial digging attachment 7 attached to a tip of an arm 6c of the backhoe. The trial digging attachment 7 comprises means for excavating a rock mass in a non-contact manner by spraying high-pressure water from its tip face, agitating and air-sucking excavated sediment, and transporting it from a trial digging site. Furthermore, a flexible member 7j is arranged at a tip part of the steel-made cylinder body 7a constituting the trial digging attachment 7 so as to protrude from the tip part. At the trial digging work, the rock mass is excavated within a range in which the flexible member 7j of the tip part of the trial digging attachment 7 contacts with the underground buried object. By this constitution, at the trial digging work, work efficiency can be improved without damaging the underground buried object.SELECTED DRAWING: Figure 1
Inventors:
NAITO HIROKO
MARUYAMA NORIO
KUBOTA MARIKO
MURANAKA HIROAKI
FURUNAGA TATSUHIRO
IMAIZUMI KAZUTOSHI
IDO KAZUTOMO
MARUYAMA NORIO
KUBOTA MARIKO
MURANAKA HIROAKI
FURUNAGA TATSUHIRO
IMAIZUMI KAZUTOSHI
IDO KAZUTOMO
Application Number:
JP2016042093A
Publication Date:
September 07, 2017
Filing Date:
March 04, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
OKUMURA CORP
OKUMURA CORP
International Classes:
E02F3/92; E02F7/02; E02F7/04
Attorney, Agent or Firm:
Toshiro Ohata
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