Sweeping plate mechanism of sanitation truck

The invention discloses a sweeping disc mechanism of a sanitation vehicle, and belongs to the technical field of sanitation vehicles. A rotary table in a rotary table assembly is rotationally hoisted below a support, and a fixed brush assembly is fixed below the rotary table; the movable brush assembly is slidably mounted below the turntable; the driving shaft is rotatably mounted on the bracket and is coaxial with the turntable, and a driving gear is mounted at the lower end of the driving shaft; the movable brush assembly comprises a sliding rod tangent to the driving gear, and the sliding rod is installed in a sliding groove in the rotary disc in a sliding mode. A tension spring assembly is connected between the sliding rod and the rotating disc, and a rack meshed with the driving gear is fixed to the side, close to the driving gear, of the sliding rod. The movable brush assembly is arranged, and during working, the driving gear drives the movable brush assembly to slide outwards and then rotate together w