Tensile and flexural testing machine

The utility model discloses a tensile and flexural testing machine, and particularly relates to the field of tensile and flexural testing machines, the tensile and flexural testing machine comprises a main frame, supporting legs are fixed at the bottom of the main frame, and a lifting platform is mounted at the top of the main frame in a matched manner; the device is provided with the weight limiting device, the fixing between the positioning sleeve and the lifting platform can be conveniently completed, when the weight main body is placed, one end of the weight main body can be directly and movably inserted into the corresponding placing groove, the placing stability of the weight main body is improved, the tensile and flexural test is facilitated, and the positioning sleeve is relatively simple and convenient to install, maintain and replace; the device is provided with a stabilizing device, after supporting legs at the bottom of the main rack are placed on the ground, moving columns at the bottoms of limit