Title:
BURYING DEVICE AND BURYING METHOD FOR ENVIRONMENTALLY FRIENDLY PIPE ANCHOR
Document Type and Number:
Japanese Patent JP2019138091
Kind Code:
A
Abstract:
To provide a burying device and a burying method for an environmentally friendly pipe anchor in which working on a pipe anchor can be done at a minimum limit and that can provide for sufficient propulsive force toward underground without rotating the pipe anchor.SOLUTION: A propulsive force step part 17 is formed in a position above a pilot bit 16A of an inner bit body 16. The propulsive force step part 17 abuts on a propulsive force reception part 20A of a pipe anchor 20. This causes impact to be transmitted from a rock drill (drilling force transmission means) 14. The inner bit body 16 includes a wing bit (diameter variable bit) 16B whose diameter expands more than the outer diameter of the pipe anchor 20 at the time of drilling or whose diameter shrinks less than the inner diameter of the pipe anchor when removing the inner bit body. A positioning jig 30 into which an upper end of the pipe anchor 20 is fitted and that regulates the position of the pipe anchor is installed between a power transmission part 14A of the rock drill (drilling force transmission means) 14 and the pipe anchor 20.SELECTED DRAWING: Figure 3
Inventors:
DOI MANABU
Application Number:
JP2018023582A
Publication Date:
August 22, 2019
Filing Date:
February 13, 2018
Export Citation:
Assignee:
ABIENGINEERING CO OTD
International Classes:
E02D5/80; E01F7/04; E21B6/00
Domestic Patent References:
| JP2011117126A | 2011-06-16 | |||
| JP4707491B2 | 2011-06-22 | |||
| JPH09195655A | 1997-07-29 | |||
| JPH0931981A | 1997-02-04 | |||
| JP2017002608A | 2017-01-05 | |||
| JP2001355382A | 2001-12-26 | |||
| JP2007291693A | 2007-11-08 | |||
| JP5442187B2 | 2014-03-12 |
Attorney, Agent or Firm:
Zenki Iwaki