The utility model relates to the technical field of waterproof coiled material testing, and provides a device for measuring the thickness of the lower surface of an SBS (
Styrene Butadiene
Styrene)
asphalt waterproof coiled material, which comprises a base main body, a three-dimensional moving mechanism, a constant-temperature heating scraper knife mechanism and a detection and identification module, the coiled material placing area is used for placing an SBS modified
asphalt waterproof coiled material to be measured; the constant-temperature heating scraper knife mechanism is mounted on the three-dimensional moving mechanism, and the constant-temperature heating scraper knife mechanism is driven by the three-dimensional moving mechanism to move in the X, Y and Z three-dimensional directions so as to remove an
asphalt coating on the lower surface of the SBS modified asphalt waterproof coiled material to be measured in the coiled material placing area; and the detection and identification module is mounted on the three-dimensional moving mechanism, and is used for performing material identification and thickness measurement on the SBS modified asphalt waterproof coiled material in the coiled material placement area. According to the invention, accurate scraping of the asphalt
coating is realized, so that the accuracy of thickness measurement is improved, and the purpose of more accurate test is realized.