Concrete core sample filling-in instrument

The utility model discloses a concrete core sample filling-in instrument which comprises a base, a clamping lead screw is rotationally connected to the base, the two ends of the clamping lead screw are in threaded connection with a first clamping nut and a second clamping nut, the thread directions of the first clamping nut and the second clamping nut are opposite, the first clamping nut is connected with a first clamping block, and the second clamping nut is connected with a second clamping block. Clamping block sliding rails are arranged on the first clamping block and the second clamping block, and the clamping block sliding rails are connected with the base sliding ways in a sliding mode; bayonets of the first clamping block and the second clamping block are in the shape of an equal trapezoid, and the included angle between the two waists is 120 degrees; the rear portion of the base is fixedly connected with a lifting stand column seat, the lifting stand column seat is connected with a lifting stand colum