Title:
DRILLING DEVICE AND DRILLING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/168361
Kind Code:
A1
Abstract:
A drilling device is equipped with: a hydraulic motor 27 for rotating a drilling blade 30 for drilling a pipe lining material 13; laser light sources 40 and 41 for emitting laser beams parallel to the rotational axis of the drilling blade, from positions near the drilling blade toward the pipe lining material, and forming laser spots on the inner circumferential surface of the pipe lining material; an electric motor 28 for rotating the laser light sources coaxially with the rotational axis of the drilling blade; and a camera 50 for capturing an image of the trajectory of the laser spots rotating along the inner circumferential surface of the pipe lining material, and a bright section formed on the inner circumferential surface of the pipe lining material by illumination light from a branch pipe. Positioning of the drilling blade is carried out such that the image of the trajectory and the image of the bright section match.
Inventors:
KAMIYAMA TAKAO (JP)
KATO TAKASHI (JP)
KATO TAKASHI (JP)
Application Number:
PCT/JP2018/006169
Publication Date:
September 20, 2018
Filing Date:
February 21, 2018
Export Citation:
Assignee:
SHONAN GOSEI JUSHI SEISAKUSHO KK (JP)
International Classes:
F16L55/18; B26D5/02; B26F1/00; B26F1/16; F16L41/04
Domestic Patent References:
| WO2016163191A1 | 2016-10-13 |
Foreign References:
| JPS6458407A | 1989-03-06 | |||
| US20070030486A1 | 2007-02-08 | |||
| JPS5827009U | 1983-02-21 | |||
| JP2000097388A | 2000-04-04 | |||
| US5153718A | 1992-10-06 | |||
| JPH02129486A | 1990-05-17 |
Attorney, Agent or Firm:
HAYAKAWA Yuzi et al. (JP)
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