Strengthening bottom-supporting construction safety platform for upper part maintenance of old bridge

The utility model discloses an old bridge upper part maintenance reinforcing bottom-supporting construction safety platform, which comprises a platform main body and a suspension unit, the platform main body comprises a plurality of cross rods and a plurality of longitudinal rods, the plurality of cross rods are parallel to each other and are arranged at intervals along the length direction of the platform main body, the longitudinal rods are laid above the cross rods, and the suspension unit is arranged on the platform main body. The cross rods are arranged at intervals in the width direction of the platform body, the two ends of the cross rods extend out of the platform body and form fixing parts, the hanging unit comprises a hanging rope and a fixing nail, the fixing nail is installed on a bridge, one end of the hanging rope is fixedly connected with the fixing nail, and the other end of the hanging rope is wound around the fixing parts and provided with a fixing piece. The safety platform is low in constr