Title:
EARTH AUGER AND METHOD FOR REMOVING UNDERGROUND OBSTACLE
Document Type and Number:
Japanese Patent JP2014218817
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an earth auger capable of efficiently performing the removal of an underground obstacle, thereby reducing a construction period, without an overhead clearance limit in a construction site, and a method for removing an underground obstacle by using the earth auger.SOLUTION: An earth auger 1 consists of: an auger screw 2 in which a spiral blade 5 is provided on outer peripheries of auger shafts 4, 6; and an auger head 3 attached to its tip having cutting bits 20. A cylindrical holding part 8 is provided on the outer periphery of the spiral blade 5 in order to hold the earth auger 1 by a chuck mechanism of an all directional revolving excavator. There is an opening between upper and lower blade portions of the spiral blade 5 in the holding part 8, and a spiral cutout 15 is provided in order to prevent the opening between the blade portions from being clogged with crushed product.
Inventors:
KOMAZAWA TATSUYA
KOMAZAWA KAZUO
KOMAZAWA KAZUO
Application Number:
JP2013098121A
Publication Date:
November 20, 2014
Filing Date:
May 08, 2013
Export Citation:
Assignee:
NIPPON BEESU KK
International Classes:
E21B7/00
Domestic Patent References:
| JPH11181772A | 1999-07-06 | |||
| JPH0336395A | 1991-02-18 | |||
| JPH0626290A | 1994-02-01 | |||
| JP2012021310A | 2012-02-02 |
Attorney, Agent or Firm:
Hirotaka Hayama