Crawler-type nuclear power plant containment wall-climbing welding robot of hollow structure

The invention relates to the technical field of welding, in particular to a crawler-type nuclear power plant containment wall-climbing welding robot of a hollow structure, which comprises a box body part, crawler belt parts and a driving part, and the crawler belt parts are arranged on two sides of the box body part and bear the box body part to move along a welding seam direction; the driving part is arranged in the hollow structure; according to the welding robot, the hollow box body part is arranged, and other parts except the crawler belt part are all arranged in the box body part, so that the size of the whole welding robot is reduced; and meanwhile, the caterpillar band part is arranged to be a magnetic block chain with the moving capacity in the longitudinal direction and the transverse direction, a power assembly drives a hub assembly or a transverse moving assembly through a reversing mechanism in the driving part, and therefore longitudinal and transverse movement of the welding robot is achieved. 本