Geological sampling device

The invention relates to the technical field of geological prospecting equipment, and discloses a geological sampling device. The problem that a geological prospecting instrument is simple in structure and has a simple function, the sampling pipe can be pressed into the ground for sampling only by a relatively large pressing force, and the labor intensity is high can be solved. The device comprises a bottom plate, a guide rod is vertically fixed at the upper end of the bottom plate, a top plate is fixed to the top end of the guide rod, a supporting plate is mounted on the guide rod in a sliding manner, a motor is mounted on the supporting plate, a sampling pipe is concentrically fixed on an output shaft of the motor, two semicircular plates are rotationally mounted at one end, far away from the motor, of the supporting plate, threads are formed in the inner walls of the two semicircular plates, a lead screw is arranged on the side, close to the semicircular plates, of the guide rod, the end of the lead screw