Precast concrete member joint surface roughness detection device

The utility model discloses a prefabricated concrete member joint surface roughness detection device which comprises a fixing frame, a measuring end head and a data processor, the fixing frame is fixedly arranged on a prefabricated concrete member, the measuring end head is arranged on the fixing frame, and the data processor is arranged on the measuring end head. The measuring end head transmits measured roughness information of the joint surface of the precast concrete member to the data processor for data processing, and the fixing frame comprises a first support, a second support, a transverse moving assembly and a longitudinal moving assembly; the bottom end of the first support and the bottom end of the second support are fixedly installed on the two opposite side faces of the precast concrete unit through the fixing and adjusting assemblies correspondingly, the transverse moving assembly is fixedly connected between the first support and the second support, and the longitudinal moving assembly is insta