Asphalt pavement depth detection device

The utility model discloses an asphalt pavement depth detection device, which relates to the technical field of pavement detection, and comprises a mounting plate, the lower side surface of the mounting plate is fixedly connected with a mounting frame through a lifting mechanism, the lower side surface of the mounting frame is provided with a round hole, and a cutting pipe is arranged in the round hole. The upper portion of the outer surface of the cutting pipe is rotationally connected with the round hole through a bearing, the upper end of the cutting pipe penetrates through the round hole, extends into the mounting frame and is sleeved with a second gear, the right side of the second gear is meshed with a first gear, and the upper end of the first gear is connected with a power mechanism which is used for driving the first gear to rotate. A push plate is arranged in the cutting pipe and slidably connected with the inner wall of the cutting pipe, the upper end of the push plate is fixedly connected with the