Drilling device for roadbed blasting

The utility model provides a drilling device for subgrade blasting, which belongs to the technical field of subgrade blasting drilling and comprises a bottom plate, moving wheels are mounted at four corners of the lower end face of the bottom plate, two upright posts are fixedly connected to the upper end face of the bottom plate, a top plate is fixedly connected to the top ends of the two upright posts, and the top plate is fixedly connected to the bottom plate. A first motor is fixedly connected to the center of the upper end face of the top plate, the driving end of the first motor penetrates through the top plate and is fixedly connected with a threaded rod, the bottom end of the threaded rod is rotationally connected with the bottom plate, a movable plate is in threaded connection with the threaded rod, and the two ends of the movable plate are slidably connected with the stand columns correspondingly. Through the arrangement of the stand column, the first motor, the threaded rod, the movable plate, the