Title:
DRILLING DEVICE
Document Type and Number:
Japanese Patent JP2022139813
Kind Code:
A
Abstract:
To provide a drilling device that is equipped with a simple reaction force receiving portion.SOLUTION: A drilling device comprises a body frame 10 having a rectangular parallelepiped shape with an open front surface, a lifting frame 20 provided to be liftable within the body frame 10, a drifter 30 which is installed on the lifting frame 20 so as to be able to move laterally and move back and forth and which drills a structure S through the open front surface, a first reaction force receiving portion 90 which is provided on the body frame 10 so that it is vertically movable so as to be supported and separated from the installation face and which receives the propulsion reaction force during drilling of the structure. The first reaction force receiving portion 90 comprises a bolt 90a provided so as to be movable in the vertical direction, a flat handle 90b for rotating bolt 90a, and a support member 90d that is attached to the lower end of the bolt 90a and supports the installation face.SELECTED DRAWING: Figure 7
Inventors:
MISAWA TAKASHI
NISHIYAMA KOICHI
YAMAGUCHI OSAMU
ARIKAWA TAKESHI
YAMADA JUNICHI
NISHIYAMA KOICHI
YAMAGUCHI OSAMU
ARIKAWA TAKESHI
YAMADA JUNICHI
Application Number:
JP2021040356A
Publication Date:
September 26, 2022
Filing Date:
March 12, 2021
Export Citation:
Assignee:
OKUMURA CORP
International Classes:
E21B15/00; E21B6/00
Attorney, Agent or Firm:
Tohro Ohata