Automatic welding walk car of inner ring welding line

Abstract

The invention discloses an automatic welding walk car of an inner ring welding line, and relates to a welding device. The welding walk car comprises four walk wheels, a motor, a pressing plate, a worm rod shaft, brackets, worm wheels, a walk car frame, wheel shafts and a pair of bevel gears, wherein the worm rod shaft is mounted at the bottom of the frame of the walk car, and is connected with the motor through the bevel gears; the motor is fixed at the bottom of the walk car through the pressing plate; the brackets are mounted at the two ends of the worm rod shaft; the worm wheels are mounted on the brackets; the wheel shafts are mounted on the worm wheels; and the walk wheels are mounted at the two ends of the wheel shafts. The boiler inner ring welding walk car always walks in a direction parallel to the welding line by keeping from the welding line with equal distance, so that a welding gun always dose not leave from the welding line; and after a boiler cylinder rotates by a lap, the starting point and the ending point of the welding line are overlapped, so that the problem of incapability of automatic welding of a last inner ring line of a boiler cylinder combination can be solved.

Description

technical field [0001] The invention relates to a welding device, in particular to a traveling trolley for automatic welding of inner ring welds. Background technique [0002] The boiler shell is mainly composed of a cylindrical steel cylinder and two ball-like heads welded together. Welding of the inner and outer ring seams of the combination of the first head and the cylinder. It can be completed with the help of submerged arc welding operation frame and rotating tire. As for the inner ring seam of the combination of the second head and the cylinder, the submerged arc welding operation frame cannot be automatically welded because it cannot extend into the cylinder. For a long time, this inner ring seam can only be completed manually by manual arc welding. The disadvantages of manual welding are multi-layer and multi-pass welding, large welding deformation, long time consumption, low efficiency, difficult to guarantee welding quality, and people work for a long time in a...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a walking trolley for automatic welding of the inner ring welding seam. The walking trolley for the inner ring welding of the boiler always keeps an equal distance from the welding seam along the direction parallel to the welding seam, so as to ensure that the welding torch does not leave the welding seam all the time. After the cylinder rotates a circle, the starting point and end point of the welding seam coincide, which can solve the problem that the last inner ring seam of the boiler cylinder combination cannot be welded automatically

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