Drilling sampling device for municipal road detection

The invention relates to the technical field of road construction, in particular to a municipal road detection drilling sampling device which comprises a supporting frame, a sampling structure capable of adjusting the downward moving sampling depth is arranged on the supporting frame, the sampling structure comprises a sampling screw rod capable of being driven to rotate, and a drill bit is arranged at the lower end of the sampling screw rod. A first fixing frame and a second fixing frame are arranged at one end of the supporting frame, a sample crushing structure matched with the sampling structure is arranged on the first fixing frame, the sample crushing structure comprises a grinding roller, and a storage box capable of moving left and right along with swinging of the grinding roller is arranged at the lower end of the grinding roller; the second fixing frame is provided with a constant pressure structure capable of pressing the periphery of a drilled hole, and the problems that in the prior art, in the d