| 摘要 |
A method and apparatus improvement is disclosed for welding an elongated seam between adjacent metal plates with a plate crawler type welding unit that tracks the seam and that includes a leading or tracking portion positioned substantially in advance of a trailing or welding portion. A guide plate structure having an elongated slot is disposed in abutting relation to the metal plates with the slot aligned with the weld seam. The welding unit tracks onto the guide plate structure to permit completion of the seam weld. The guide plate structure is adjustable in effective thickness to effect a correspondence with various plates to be welded and is carried on a support means that permits independent three axis movement of the guide plate structure to select positions and transportation of the guide plate structure and supported welding unit between spaced welding sites.
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