Drilling device for road and bridge municipal construction

The utility model relates to the technical field of drilling devices, and discloses a drilling device for road and bridge municipal construction, which comprises a drilling machine body, a drill bit is fixedly arranged at the output end of the bottom of the drilling machine body, a protective sleeve is sleeved at the bottom of the drilling machine body, and the protective sleeve is matched with the drill bit; a concentration bin is fixedly arranged on one side of the protection sleeve, an air outlet is fixedly formed in the outer side of the bottom of the concentration bin, a blowing fan is fixedly arranged on the other side of the protection sleeve, the blowing fan and the concentration bin are horizontally and collinearly arranged, a placement seat is fixedly arranged outside the concentration bin, and a connector is fixedly arranged in the middle of the placement seat. The protective sleeve is used for drilling protection, the blowing fan is used for blowing air to the concentration bin to drive dust to be