Title:
鋼管杭用の接合部材
Document Type and Number:
Japanese Patent JP6916051
Kind Code:
B2
Abstract:
To provide a joint member for steel pipe pile that allows a welding material to penetrate into an opening end of a steel pipe for steel pipe pile more evenly in full-welding after tack-welding of the opening end.SOLUTION: An excavation blade 10, which is a metal joint member that is full-welded to an opening end 3 of a steel pipe 1 after being tack-welded thereto, is provided with a tip part 15 inserted into the opening end 3, and a slanting part for groove 20 forming a groove that is an annular groove for full-welding 21 between the slanting part groove and an end face 2 of the opening end 3 in the state in which the tip part 15 is inserted into the opening end 3. A recessed part for tack-welding 22 is formed at the boundary between the tip part 15 and the slanting part for groove 20. The recessed part for tack-welding is welded to the opening end 3 of the steel pipe 1 via a tack-welding material 26 melted in tack-welding. At least three recessed parts for tack-welding are formed at intervals circumferentially at the boundary so that the tack-welding material 26, which is melted on the bottom of the annular groove 21 in tack-welding, flows thereinto.SELECTED DRAWING: Figure 1
Inventors:
Hitoshi Ichimura
Shuichi Takahashi
Shuichi Takahashi
Application Number:
JP2017129372A
Publication Date:
August 11, 2021
Filing Date:
June 30, 2017
Export Citation:
Assignee:
DAIWA HOUSE INDUSTRY CO.,LTD.
International Classes:
E02D5/24
Domestic Patent References:
| JP2005282184A | ||||
| JP10034386A | ||||
| JP4298561B2 | ||||
| JP2011080255A | ||||
| JP2012132154A | ||||
| JP6226497A | ||||
| JP2005118825A | ||||
| JP50006103U | ||||
| JP2001334396A | ||||
| JP2010047956A | ||||
| JP2004027655A | ||||
| JP2003260591A | ||||
| JP2002160056A | ||||
| JP6086885U | ||||
| JP47034495Y1 | ||||
| JP47032003Y1 | ||||
| JP2009297750A |
Foreign References:
| US20020048493 | ||||
| US20060198706 | ||||
| US20060213693 |
Attorney, Agent or Firm:
Hiraki International Patent Office