Fuente: Wipo "digitalization" The invention discloses a soil fixed-depth sampling device for a constructional engineering specialty. The soil fixed-depth sampling device comprises a cart, a lifting mechanism is arranged on the cart, an electric rotating rod is arranged on the lifting mechanism, a mounting plate is connected to the electric rotating rod, a sampling pipe is rotationally connected to the mounting plate through a hollow rotating rod, and a stripping mechanism is arranged between the sampling pipe and the mounting plate. The vibration rod is mounted on the sampling pipe, the groove is formed in the inner wall of the sampling pipe, and the sealing strip is arranged to seal the groove, so that soil is prevented from entering the groove and the sealing strip is prevented from moving to be separated from a soil sample when the sampling pipe drills and samples, a gap is filled between the soil sample and the periphery of the inner wall of the sampling pipe, and subsequent soil taking operation is facilitated; the semi-circular striking block strikes the vibrating rod to generate vibration, the vibrating rod transmits the generated vibration to the inner wall of the sampling pipe, and a soil sample is stripped outwards under the assistance of the vibration and the gap, so that the difficulty of taking out the soil is reduced, and the effect of conveniently taking out the soil sample is achieved.