The utility model provides an auxiliary device of a road line drawing
machine, which comprises a melting kettle, one side of the melting kettle is provided with a first circular ring
pipe and two support rings, the first circular ring
pipe is provided with a plurality of air outlet pipes, one side of the first circular ring
pipe is provided with a second circular ring pipe, and one side of the second circular ring pipe is provided with an
exhaust pipe. A plurality of spray heads are arranged on one side of the
exhaust pipe and are perpendicular to the ground, a supporting rod is arranged on the supporting ring, and a sleeve rod is arranged on the supporting rod. The air outlet pipe, the
exhaust pipe and the spray head are arranged,
water vapor generated by heating and melting the
hot melt coating in the melting kettle is exhausted to the exhaust pipe through the air outlet pipe and finally sprayed to the ground through the spray head, in the process, the
water vapor can be prevented from being sprayed to the face of a constructor, and the comfort of the constructor during construction is improved; and meanwhile, the
water vapor sprayed by the spray head is sprayed to the marked line on the ground, so that water in the marked line is quickly evaporated into water vapor at high temperature, and the speed of
drying the marked line is effectively increased.