Sampling device for geological surveying and mapping

The utility model discloses a sampling device for geological surveying and mapping, which comprises a fixing and stabilizing mechanism, a support frame, a pushing cylinder, a motor box, a rotary sampling motor, a sampling barrel, a plugging mechanism, a sample storage piece and a fixing and connecting screw, and the support frame comprises two groups of vertical support plates and a group of transverse bearing plates; the transverse bearing plate is vertically arranged at the upper ends of the two sets of vertical supporting plates, the pushing air cylinder is arranged on the lower surface of the transverse bearing plate, the motor box is arranged at the free end of the pushing air cylinder, scales are arranged on the vertical supporting plates, and a depth indicating rod is arranged on the outer side of the upper portion of the motor box. The depth indicating rod is arranged corresponding to scales on the vertical supporting plate, the rotary sampling motor is arranged in the motor box, the sampling barrel i