Height and width limiting device for newly-built highway in highway engineering

The utility model relates to the technical field of height and width limiting devices for highways, and discloses a height and width limiting device for newly built highways of highway engineering, which comprises a connecting rod fixedly mounted at the top of a bottom column, a driving motor arranged at the center of the back of the connecting rod, and a conveyor belt rotatably connected to the inner side of the driving motor. The two ends of the surface of the conveying belt are in transmission connection with connecting shafts, one end of the outer side of the conveying belt is fixedly connected with a sliding block, one end of the outer side of the sliding block is fixedly connected with a connecting block, and one end of the outer side of the connecting block is fixedly connected with a height limiting rod. The height limiting rods are slidably connected to the two ends of the outer side of the connecting rod through the sliding blocks, the driving motor is started, the connecting shaft rotates to drive