Large tank rounding equipment

The invention relates to the technical field of preparation of tanks, in particular to large tank rounding equipment which is characterized in that a parallel auxiliary roller and an inclined auxiliary roller are telescopically mounted on a transverse mounting seat and an inclined mounting seat through adjusting parts respectively and abut against the upper semicircular arc outer wall of a tank; the supporting roller has the beneficial effects that a group of supporting rollers are additionally arranged on an existing supporting roller, and the supporting rollers are subjected to telescopic rotation adjustment, so that the contact area between a tank body and the supporting rollers is increased, the tank body is not prone to deformation, meanwhile, the stroke adjustment amplitude of the adaptive range of the supporting rollers is improved, and the adaptive range is greatly widened; the auxiliary rollers are arranged on the two sides and used for clamping the arc outer wall of the upper half portion of the tan