Top plate drilling device

The utility model discloses a top plate drilling device which comprises a working frame, a first driving motor, a moving mechanism, a power mechanism and a drill bit. The working frame is of a rectangular three-dimensional structure, a through hole is formed in the top of the working frame, and a base is arranged at the bottom of the working frame; the moving mechanism is arranged in the working frame and comprises a threaded rod and a horizontal gear; the two threaded rods are arranged at intervals in the transverse direction. The upper portions of the threaded rods are in threaded connection with threaded sleeves, and the horizontal gears on the two threaded rods are meshed with each other. The threaded sleeves on the two threaded rods are connected through a connecting plate. And the first driving motor is installed at the top of the connecting plate, the drill bit is fixed to an output shaft of the first driving motor, and the drill bit penetrates out of the through hole to the outer side of the working f