Punching equipment for constructional engineering investigation

The utility model discloses punching equipment for constructional engineering investigation, which relates to the field of punching equipment and comprises a connecting seat, a water tank is arranged at the edge of the upper end of the connecting seat, a water inlet pipe is fixedly connected to one side of the water tank, a spray head is fixedly connected to the other end of the water inlet pipe, and a connecting block is fixedly connected to the outside of the spray head. One side of the connecting block is fixedly connected with a rotary drum; the drill cooling device has the advantages that the telescopic rod, the spring and the rotary drum are matched with the short plate and the adjusting hole in the short plate, so that the angle of the spray head can be adjusted, water flow can be more accurately aligned to the area, needing to be cooled, in a drill, cooling efficiency and effect are improved, and meanwhile the drill can be prevented from being damaged due to overheating and affecting use; and the posi