Punching and sampling device for road and bridge detection

The invention belongs to the technical field of road construction, in particular to a punching and sampling device for road and bridge detection, and provides the following scheme for solving the problems in the prior art: the punching and sampling device comprises a bottom frame, a push handle is fixedly connected to the outer wall of one side of the bottom frame, and rollers are rotatably connected to the two ends of the outer walls of the two sides of the bottom frame; limiting columns are fixedly connected to the four corners of the outer wall of the top of the bottom frame, a sampling mechanism is arranged among the four limiting columns and comprises a driving box, limiting ring sleeves are fixedly connected to the four corners of the driving box, a rotating rod is rotatably connected to the outer wall of the bottom of the driving box, and a sampling barrel is fixedly connected to the bottom end of the rotating rod; the bottom end of the sampling barrel is fixedly connected with a sampling head. After t