Adjustable plate drilling device for water conservancy project

The adjustable plate drilling device for the water conservancy project comprises a drilling seat and four rotating plates, the drilling seat comprises an upper top face, a rotating shaft and a fixing seat, the upper top face is located at the top of the rotating shaft, the fixing seat is located at the bottom of the rotating shaft, and the four rotating plates are arranged on the rotating shaft. A plurality of fixing inserting blocks are slidably connected between the upper top face and the fixing base, a punching cavity is formed in the center of the rotating shaft, the outer side of the rotating shaft is rotatably connected with four rotating plates, a lead screw sliding rail is arranged on one side of the upper top face and connected with a moving plate, and a first driving motor is arranged at the top of the moving plate. A drill bit is connected to the bottom of the first driving motor, extending plates are connected to the interiors of the four rotating plates through limiting sliding grooves, and limit