| 摘要 |
PROBLEM TO BE SOLVED: To obtain a device by which the seam welding of a long size pile can be managed as a part of a press-fitting process by mounting a welding machine on the chuck of a press-fitting drawing machine holding movably up and down a press-fitting pile, and constructing so that the welding machine and the held press-fitting pile stand opposite each other. SOLUTION: A welding machine 2 is equipped with a running part 6 which can run the whole periphery along an outer periphery orbit 5 mounted so that a press- fitting pile 3 held by a chuck 4a is surrounded, and is equipped with a controller performing a welding operation according to the up-and-down operations of the chuck 4a. When running the welding machine 2 along the outer peripheral orbit 5, the welding of the pile 3 held by the chuck 4a, is performed by a welding device 1 in a portion where the welding machine 2 faces. By aligning the welding machine 2 to the portion to be welded when holding an additional pile 3b at the top end of a press-fitted pile 3a by the chuck 4a of a press-fitting drawing machine 4, the circumferential welding of a seam part 3c can be performed. Since the seam welding of a long size pile can be managed as a part of press-fitting process, the efficiency of press-fitting working is improved without troublesome manual working on a pile driving spot where a worker is unsteady on his feet.
|
