Title:
鋼管径変換リング
Document Type and Number:
Japanese Patent JP7184285
Kind Code:
B2
Abstract:
To provide a steel pipe diameter conversion ring which can select the optimum steel pipe used as a steel pipe pile and a pile-like ground reinforcement body, out of steel pipes having a variety of steel pipe diameters and wall thicknesses in a tip part and in the vicinity of a pile head part, and which can easily align the central axes of steel pipes of different diameters concentrically (perform centering) in connection by welding, to achieve reduction in material cost, thereby providing a steel pipe pile and a pile-like ground reinforcement body whose cost is minimum.SOLUTION: A steel pipe diameter conversion ring includes: a first steel pipe receiving end part having a first outer diameter constituted so as to be engaged with an inner peripheral side of a steel pipe having a relatively small inner diameter, and a second steel pipe receiving end part having a second outer diameter constituted so as to be engaged with the inner peripheral side of the steel pipe having a relatively large inner diameter; and one or a plurality of seat parts provided so as to protrude from an outer surface in the middle of expanding from the first outer diameter to the second outer diameter, and constituted so as to function as a bit for drilling in the case where the steel pipe diameter conversion ring rotates axially.SELECTED DRAWING: Figure 2
Inventors:
Itagaki second son
Application Number:
JP2019016920A
Publication Date:
December 06, 2022
Filing Date:
February 01, 2019
Export Citation:
Assignee:
Fuji Shoji Co., Ltd.
Kyoshin Construction Materials Co., Ltd.
Kyoshin Construction Materials Co., Ltd.
International Classes:
E02D5/48; E02D5/24
Domestic Patent References:
| JP2016217107A | ||||
| JP2002302940A | ||||
| JP2005003029A | ||||
| JP2002275888A |
Attorney, Agent or Firm:
Takuma Sasano