Clamping device of concrete core sample grinding machine

The utility model discloses a clamping device of a concrete core sample grinding machine, and belongs to the technical field of equipment for grinding concrete core samples. A concrete core sample grinding machine clamping device comprises a fixing bottom plate, a fixing sleeve is arranged on the left side of the middle of the top face of the fixing bottom plate, a mounting plate is arranged on the inner wall of the fixing sleeve, a bearing plate is arranged on the rear side of the lower portion of the left end face of the mounting plate, an electric push cylinder is arranged in the middle of the top face of the bearing plate, and the output end of the electric push cylinder is connected with a rack. A through hole penetrating through the mounting plate is formed in the upper side of the middle of the mounting plate, a rotating shaft is arranged in the through hole, a clamping assembly is arranged at the right end of the rotating shaft, and the left side of the circumferential outer wall of the rotating shaft