Geotechnical engineering soil sampling device

The utility model relates to a geotechnical engineering soil sampling device which comprises a supporting plate, four telescopic supporting legs are fixedly installed at the four corners of the bottom end of the supporting plate, each telescopic supporting leg comprises an upper supporting leg and a sleeve rod, the bottom end of each upper supporting leg is adjustably sleeved with the corresponding sleeve rod, the bottom end of each sleeve rod is fixedly connected with the top end of a universal wheel, and a rotating disc is arranged at the bottom end of the supporting plate. A first hydraulic rod is arranged on one side of the bottom end of the connecting plate, a second hydraulic rod is arranged on the other side of the bottom end of the connecting plate, a sampling barrel is arranged below the telescopic end of the first hydraulic rod, a driving motor is arranged below the telescopic end of the second hydraulic rod, and one end of the driving motor is fixedly connected with a spiral sampling pipe; by the a