| 摘要 |
PROBLEM TO BE SOLVED: To eliminate goniometry on the site, and connect a tool by wagging an angle with easy work without welding a lip channel. SOLUTION: This tool is provided with fixing parts 11, 12 provided on an upper part to fix a connecting member 10 and a connecting member 20 through a bolt and nut 5, projecting parts 13, 23 provided on a lower part to insert in a lip channel 2 of a lower side, and pinching parts 12, 22 provided between the fixing parts 11, 21 and projecting parts 13, 23 to pinch a lip channel 1 of an upper part in the connecting members 10, 20. Moreover, corners of the projecting parts 13, 23 are chopped off along a nearly inner wall surface of the lip channel 2 of the lower side. |
