Shallow layer sampling drilling machine for geological exploration

The utility model discloses a shallow layer sampling drilling machine for geological exploration, which relates to the technical field of drilling machines for geological exploration and comprises a drilling machine main body, a moving mechanism, a holding support mechanism and a limiting mechanism are arranged on the drilling machine main body, and the moving mechanism is arranged on the drilling machine main body. An L-shaped supporting frame in the holding and supporting mechanism drives a holding rod to rotate with a rotating shaft as the axis, switching between a holding station and a supporting station is achieved, pins in the limiting mechanism are located in a first clamping groove and a second clamping groove correspondingly when the holding and supporting mechanism is located at the holding station and the supporting station, and the pins in the limiting mechanism are clamped in the first clamping groove and the second clamping groove correspondingly. And then the holding supporting mechanism is loc