Soil layer detection drilling device

The invention discloses a soil layer detection drilling device, and relates to the technical field of soil layer drilling devices.The soil layer detection drilling device comprises a drilling barrel, and a soil taking assembly is arranged in the drilling barrel; when drilling is conducted on soil, the equipment is in a vertical state, a controller is started to control a rotating motor to rotate, a drilling barrel is driven to drill the soil under the cooperation of a transmission wheel and a transmission belt, and four sliding blocks are evenly distributed on the outer circumference of a sliding disc; the soil sampling assembly is arranged in the drilling barrel and is connected with a sliding groove formed in the inner wall of the drilling barrel in a matched mode, when the drilling barrel rotates, the soil sampling assembly also rotates along with the drilling barrel, a conical head making contact with the ground firstly starts to drill the ground, then the drilling barrel gradually enters a soil layer for