Device applied to novel multi-purpose movable arm splicing point welding

The utility model relates to the technical field of movable arm welding, in particular to a device applied to novel multi-purpose movable arm splicing point welding. The movable arm limiting device comprises a bottom fixing plate, a first limiting mounting seat, a second limiting mounting seat, a third limiting mounting seat, a fourth limiting mounting seat, a first bottom cushion block, a second bottom cushion block and a side limiting block, wherein the first limiting mounting seat, the second limiting mounting seat, the third limiting mounting seat and the fourth limiting mounting seat are used for limiting a movable arm; the first limiting mounting base, the second limiting mounting base, the third limiting mounting base and the fourth limiting mounting base are sequentially arranged on the bottom fixing plate from front to back, the first bottom cushion block is arranged between the third limiting mounting base, and the side limiting block is arranged at the front end of the fourth limiting mounting base