Wind speed monitoring device for large-span bridge section of expressway

The utility model relates to the technical field of wind speed monitoring, in particular to an expressway large-span bridge section wind speed monitoring device which comprises a bottom plate, a supporting column is arranged on the bottom plate, a cleaning assembly and a protection assembly are arranged on the supporting column, the cleaning assembly comprises a supporting rod fixedly connected to the top end of the supporting column, and a mounting box is fixedly connected to the top end of the supporting rod. The supporting rod is sleeved with a rotating disc, and three wind plates distributed at equal intervals are fixedly connected to the side wall of the rotating disc. Through cooperative arrangement of the supporting rod, the rotating disc, the wind plates and other structures, when the device is used, the wind plates are affected by wind power, the rotating disc can rotate on the supporting rod, the mounting plate drives the brush to rotate, and the brush is driven to rotate; and foreign matters on the