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Title:
DRILLING METHOD FOR CONCRETE STRUCTURE, AND CORE BORING MACHINE
Document Type and Number:
Japanese Patent JP2014073624
Kind Code:
A
Abstract:

To enhance working efficiency of a series of drilling operations including a setup for preventing a core from falling on a construction site, by greatly shortening time for the setup.

Before a through-hole TH is formed on a concrete floor CF, a bottom surface 33b of a fixture 33 is bonded to a drilling-scheduled location of the concrete floor CF in the state of butting against it, and a plurality of locking hook parts 27 of a hooking implement 25 are locked to a part-to-be-locked 35 of the fixture 33.


Inventors:
MATSUO KENGO
WANG PENG
Application Number:
JP2012221879A
Publication Date:
April 24, 2014
Filing Date:
October 04, 2012
Export Citation:
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Assignee:
IHI CORP
International Classes:
B28D1/14; B23B51/04; E04G23/02; E21B25/10
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu



 
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