This utility model provides a small drilling device for blasting and drilling in
coal mines, including a movable base, a movable mechanism mounted on the movable base, a pneumatic
drill, and a
drill rod stabilizing mechanism. The movable mechanism includes a movable frame, two parallel connecting rails, a pneumatic telescopic rod, and a
threaded rod fixedly connected to the shaft of the
pneumatic motor. The bottom surface of the movable frame has a groove corresponding to the connecting rail, which mates with the connecting rail. The rear side of the base is fixedly connected to the front end of the pneumatic telescopic rod. The pneumatic
drill is fixedly connected to the top center of the lifting plate of the movable frame. The drill rod stabilizing mechanism includes a
fixed frame, a fixed ring, a ring rail, and a reinforcing frame. The
fixed frame is fixedly connected to the top surface of the lifting plate, the fixed ring is fixedly connected to the front end surface of the
fixed frame, the ring rail is fixedly connected to the front end surface of the fixed ring, and the reinforcing frame is mounted on the ring rail and fixedly connected to the drill rod. This device is compact and flexible, allowing for more flexible use and stable and rapid drilling operations.