Title:
傾斜既設管の穿孔工法及びそれに用いられる筐体
Document Type and Number:
Japanese Patent JP6690923
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To execute an efficient and easy punching work under non-interrupted flow state in respect to an inclined existing pipe kept under slant attitude in high accuracy of punching.SOLUTION: This invention executes a step for installing a housing A of divided structure comprising an inclined housing 10 that can be installed at a gradient inclined attitude existing pipe 1 and a vertical housing part 11 cooperatively arranged at the inclined housing 10 in vertical attitude at the existing pipe 1; a step for connecting a work gate valve C at an upper opening part of the vertical housing part 11 and connecting a punching device D provided with a punching cutter 35 to the work gate valve C; a step for feeding the punching cutter 35 from the upper opening part of the vertical housing part 11 through the work gate valve C operated to open valve to a pipe bottom side of the existing pipe 1 to cut and remove a pipe wall at a position corresponding punching of the existing pipe 1; and a step for recovering the punching cutter 35 into the punching work housing 30 and closing the work gate valve C to remove the punching device D from the work gate valve C.SELECTED DRAWING: Figure 6
Inventors:
Akito Totsugu
Application Number:
JP2015223176A
Publication Date:
April 28, 2020
Filing Date:
November 13, 2015
Export Citation:
Assignee:
Water Supply Technology Development Corporation
International Classes:
F16L41/06; F16L55/00
Domestic Patent References:
| JP2014218036A | ||||
| JP1046596U | ||||
| JP2006250295A | ||||
| JP2005030603A | ||||
| JP2013127293A | ||||
| JP2009041758A | ||||
| JP2012143816A | ||||
| JP59020086U |
Attorney, Agent or Firm:
Masahiro Miyaji