Impact detector for building materials

The utility model belongs to the technical field of building materials, in particular to an impact detector for building materials, which comprises a working box, sliding rods are fixedly mounted on the periphery of the inner wall of the working box respectively, a second electric push rod is fixedly mounted at the top of the inner wall of the working box, and a second connecting plate is arranged at the output end of the second electric push rod. A third electric push rod works to enable a clamping plate to clamp and fix a building material, and a second electric push rod works to enable an impact block to move up and down, adjust the distance between the impact block and the building material and close a vacuum pump, so that a first connecting plate drives the impact block to downwards perform falling impact; the building material detection device is simple in structure and convenient for operators to detect building materials according to impact of different heights, so that the practicability of the devic