Auxiliary circle drawing device for gas cutting of blind plate

The utility model discloses a gas cutting blind plate auxiliary circle drawing device and belongs to the field of pipeline overhaul construction. Comprising a base (1), a stand column (2), a transverse rod (3), a connecting rod (4), a cantilever rod (5), a tightening latch (6), a sleeve (7), a sliding roller (8) and a rolling shaft (9). A circle drawing device is placed on a steel plate, then a gas welding nozzle is inserted into a sleeve from top to bottom, the position of a tightening latch is adjusted in a rectangular hole of a cantilever rod according to the diameter of a pipeline blind plate, the tightening latch is fastened through a nut, then a gas welding fire source is opened, the steel plate is cut, meanwhile, the cantilever rod is rotated, and the cantilever rod drives a rolling shaft to rotate; and finally, the blind plate with the rolling shaft as the circle center is cut. The blind plate cutting device has the advantages of being easy to assemble and convenient to operate, not only avoiding the