Commercial concrete anti-cracking performance testing device

The utility model belongs to the field of concrete, particularly relates to a commercial concrete anti-cracking performance testing device, and aims to solve the problems that the height of a bottom top plate of an existing commercial concrete anti-cracking performance testing device cannot be adjusted according to the thickness of commercial concrete, a protection device is not provided during detection, and if the commercial concrete is broken, the commercial concrete cannot be damaged. In order to solve the problem that detection personnel may be injured, the utility model provides the following scheme: the device comprises a base, a push rod motor is fixedly mounted on the base, an output shaft of the push rod motor is fixedly connected with a top plate, a two-way motor is fixedly mounted on the base, and output shafts on two sides of the two-way motor are fixedly connected with transmission shafts; according to the commercial concrete detection device, the height of the top plate can be adjusted accordin