Rock axial tension test device and rock axial tension test device

The invention provides a rock axial tension test device and a rock axial tension test device in the field of material mechanical tests. The invention provides a rock axial tension test device which has a simple structure and can be used for guaranteeing the complete axial alignment of a test piece and upper and lower pull heads in an adhesion process and can also be used for effectively eliminating an eccentric phenomenon in a tension test process. The rock axial tension test device comprises an upright post, an upper positioning sleeve, a lower positioning sleeve, an upper pull head, a lower pull head, a test piece clamping sleeve and a bottom plate, as well as a clamping element, the clamping element comprises an inner side face and an outer side face, the inner side face is cylindrical, the outer side face is a conical surface, a conical surface matched with the outer side face of the clamping element is arranged on the clamping sleeve, and the clamping element is located in the conical surface of the clamping sleeve. The rock axial tension test device provided by the invention is used for solving the eccentric problem of a rock test piece when being pulled, and the rock test piece is aligned in a process of clamping the rock test piece.