Soil sample collecting device for geological detection

The utility model discloses a soil sample collecting device for geological detection. Mounting base, the upper side wall of the mounting base is rotationally connected with a connecting pipe; a rotating rod penetrating through the mounting base is inserted into an inner cavity of the connecting pipe; first positioning bolts are symmetrically connected to the outer side wall of the connecting pipein a threaded mode. First positioning screw holes are symmetrically formed in the side wall of the rotating rod; the output end of the motor is inserted into an inner cavity of the connecting pipe; acollecting cylinder is clamped in the clamping groove; a locking device is assembled between the clamping groove and the collecting cylinder; the connecting pipe drives the rotating rod to rotate; thedrill bit at the bottom end of the rotating rod can excavate a soil sample; meanwhile, the soil is collected into the collecting cylinder through the spiral sheet; the length of the rotating rod canbe adjusted, the collecting