Online wheel set dustproof plate seat diameter measuring device

The utility model relates to the technical field of rail transit measuring instruments, and provides an online wheel set dustproof plate seat diameter measuring device which comprises a base, a pressing plate, a mounting plate, a laser sensing head and an adjusting support arranged on the base. The base is connected to the lower portion of the rail through the pressing plate. The laser sensing head is fixedly connected with the mounting plate, and the mounting plate is rotatably mounted on the adjusting bracket. According to the utility model, the laser sensing heads are symmetrically installed on the two sides of the track and are used for measuring the diameter of the dustproof plate seat of the wheel set, so that the automatic measurement of the diameter of the dustproof plate seat of the wheel set is realized, the axial center line of the wheel set can be quickly positioned, the labor intensity of workers is reduced, and the detection efficiency of the railway wheel set is improved; the system has the cha