Novel constructional engineering hole reserving device

The utility model discloses a novel constructional engineering hole reserving device. The utility model belongs to the field of constructional engineering, the utility model discloses a novel constructional engineering hole reserving device. Stand column, moving grooves are formed in the surfaces of the stand columns. A supporting plate is mounted in the moving groove; a sliding groove is formed in the surface of the supporting plate. A through hole is formed in the inner wall of the chute; a first bearing is mounted in the through hole; a first rotating rod is mounted in the first bearing; afirst bevel gear is driven to rotate through a first rotating rod; meshing installation relation, the second bevel gear drives a second rotating rod to rotate; threaded connection, the connecting block drives the motor to move; and by pushing the supporting plate, a first spring and a second spring are stressed and compressed, a motor drives a rotating shaft to move downwards, then punching is conducted, and when thrust i