Title:
ROTARY PENETRATION STEEL PIPE PILE WITH TIP BLADE
Document Type and Number:
Japanese Patent JP2022190513
Kind Code:
A
Abstract:
To provide a rotary penetration steel pipe pile with a tip blade which reduces a burden due to a load from a building and improves stability during usage.SOLUTION: A rotary penetration steel pipe pile with a tip blade includes: a body part 20 composed of a cylindrical pipe formed with two inclined notch grooves 21 and 26; a lid part 30 which is arranged so as to be flush with a rear end opening 20b of the body part 20 or inside the rear end opening 20b, and is welded and fixed to a pipe inner peripheral surface 20c; a pipe shaft 40 having a diameter smaller than that of the body part welded and fixed to the lid part 30; an excavation member 50 whose plate thickness faces 51 and 51 of sides are welded and fixed to the mounting position of the body part 20 so that its tip projects a tip opening 20a of the body part 20, and whose plate thickness face 52 of the rear side is welded and fixed to the lid part 30; and two semi-disk like blade members 60 and 70 which are inserted into the pipe through the notch grooves 21 and 26 in a cross shape, and are welded and fixed to a contact part with the excavation member 50 and insertion parts 22 and 27 of the notch grooves 21 and 26.SELECTED DRAWING: Figure 1
Inventors:
YAMASHITA KOJI
Application Number:
JP2021098872A
Publication Date:
December 26, 2022
Filing Date:
June 14, 2021
Export Citation:
Assignee:
GAIAF1 CO LTD
International Classes:
E02D5/28; E02D5/56; E02D5/72
Domestic Patent References:
| JP2015143453A | 2015-08-06 | |||
| JP2021063356A | 2021-04-22 | |||
| JPH10219679A | 1998-08-18 | |||
| JP2002322644A | 2002-11-08 | |||
| JP2004190268A | 2004-07-08 | |||
| JP2004316411A | 2004-11-11 | |||
| JP2012031712A | 2012-02-16 | |||
| JP2016125316A | 2016-07-11 |
Attorney, Agent or Firm:
Noriaki Goto
Daiki Kato
Daiki Kato