Concrete structure steel bar protection layer thickness measuring device

The utility model relates to the technical field of ultrasonic thickness gauges, in particular to a thickness measuring device for a steel bar protective layer of a concrete structure. According to the technical scheme, the ultrasonic thickness gauge comprises an ultrasonic thickness gauge body, a measuring connecting line is arranged at the connecting end of the ultrasonic thickness gauge body, a measuring head is arranged at the end, away from the ultrasonic thickness gauge body, of the measuring connecting line, a motor is arranged in the measuring head, and a scraper is arranged on the outer ring of a connecting rod in a sleeving mode; a grinding plate is arranged on one side of the scraping plate, and an ultrasonic sensor is arranged on one side of the connector. The concrete thickness measuring device is simple in overall structure and convenient to operate, and can polish and clean measuring points on the outer surface of concrete with the thickness needing to be measured through the arrangement of the