| 摘要 |
PROBLEM TO BE SOLVED: To provide a groove aligning device, which is easily moved to a predetermined position, and by which accurate groove alignment of tubes is conducted. SOLUTION: The device has: a 1st arm 9, which is installed so as to be angularly displaceable to a 1st complete round ring 8 clamping an existing pipe 2; a 2nd arm 11, which is installed so as to be angularly displaceable to a 2nd complete round ring 10 clamping a newly-laid pipe 3; a groove aligning stand 12, which is connected to each arm 9, 10 with predetermined anglesθ1,θ2, and on which the arms 9, 10 are disposed opposingly to each other; and a movement aid means 13, which aids the groove aligning stand 12 in moving to an installation object 49. Each axis of each complete round rings 27, 30 is coaxially arranged by connecting each arm 28, 31 to a groove aligning stand 29. Further, a groove aligning device 1 is easily moved to a predetermined position by the movement aid means 13, and is thrusted in a state that the groove aligning stand is attached to the other end of the existing tube. COPYRIGHT: (C)2005,JPO&NCIPI
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