Actual ground assembly welding equipment null of large-sized hydraulic

摘要

PROBLEM TO BE SOLVED: To stabilize quality, and to improve execution efficiency by improving an execution means. ;SOLUTION: An irregularity correction means 5 consisting of a fitting body whose diameter is smaller than that of a downstream pipe and having concentric shape therewith, and irregularity correcting cylinder group lines which secures the prescribed route gap between the upper end part of the downstream pipe and the lower end part of an upstream pipe 19, and is expanded/contracted by the irregularity detection signal of the upstream and downstream pipes is provided on the upper part of a movable truck 7 which is guided by an inner surface of a down stream pipe 2 constituting hydraulic steel pipe line A arranged in an inclined tunnel bedrock 1, is lifted and is moved by a lifting means such as a winch. An automatic initial pass back beat TIG welding equipment 6 to perform the back bead welding of the joint part of the upstream and downstream pipes can be fitted between the cylinder group lines.;COPYRIGHT: (C)1997,JPO