Rock core sampling device for geological prospecting exploration

A rock core sampling device for geological prospecting exploration comprises a supporting box, a motor, a drill rod and a fixing assembly. The motor is installed in the supporting box, the output end of the motor vertically penetrates through the lower end face of the supporting box, and the top of the drill rod is connected with the output end of the motor. A bearing seat is arranged at the top of the supporting box, a rotating shaft is vertically arranged above the bearing seat, the bottom of the rotating shaft is connected with the bearing seat, a rotating disc is fixedly connected to the top of the rotating shaft, and a crank is arranged on the rotating disc. The at least three fixing assemblies are arranged on the periphery of the bottom of the drill rod in an annular array mode, traction cables are fixedly connected to the upper portions of the fixing assemblies, the ends, away from the fixing assemblies, of the traction cables are connected with the rotating shaft, the at least three traction cables ar