Auxiliary supporting bracket for cleanliness detection of biosafety cabinet

The utility model discloses a biosafety cabinet cleanliness detection auxiliary support bracket, which comprises a shell, and is characterized in that the inner wall of the shell is connected with a rack plate in a sliding manner, the side wall of the shell is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with the rack plate. One end of the rotating shaft penetrates through the side wall of the shell and then is rotationally connected to the inner side wall of the shell, the side wall of the rotating shaft is fixedly connected with a cylindrical gear, the cylindrical gear is in meshed connection with a rack plate, the top end of the rack plate is fixedly connected with a connecting plate, and one end of the lifting rod penetrates through and is in sliding connection with the top end of the shell. The motor is started, the motor rotates forwards to drive the rotating shaft and the cylindrical gear to rotate, a