High-speed tensile test device

The invention provides a high-speed tensile test device, and belongs to the technical field of tension measurement, the high-speed tensile test device comprises an acceleration cage assembly and a conical chuck assembly, the acceleration cage assembly is internally provided with a moving space for the conical chuck assembly to move up and down; a cone frustum through hole inclining inwards from top to bottom is formed in the bottom of the acceleration cage assembly; the conical chuck assembly is arranged to be in a cone frustum shape corresponding to the conical through hole. A groove gap is formed in the conical chuck assembly and is used for clamping a sample piece; the conical chuck assembly is placed in the acceleration cage assembly by being matched with the conical table through hole structure of the acceleration cage assembly. The high-speed tensile test device has the beneficial effects that test errors caused by factors such as a gap between a clamp and a sample piece can be eliminated, and the sampl