Cable saddle transverse moving system and cable saddle transverse moving construction method

The invention discloses a cable saddle transverse moving system and a cable saddle transverse moving construction method. The cable saddle transverse moving system is characterized in that a pulley block is installed on a steel cable between a cable saddle flatcar and a steering seat, a small-diameter steel cable which is connected with the pulley block and a hoist is wound through the steering seat to enable the steel cable to pass through the steering seat more easily, the contact area between the steel cable and the steering wheel of the steering seat is reduced, the friction between the steel cable and the steering wheel of the steering seat is reduced, the wear caused by the friction between the steel cable and the steering wheel of the steering seat is reduced and the risk that the steel cable is broken due to the wear is reduced. The cable saddle transverse moving construction method is characterized in that a ship is used for transporting arch rib sections; after the ship reaches a position right below the installation position of the arch rib sections, the body of the ship is stopped, anchored and fixed along the water flowing direction of a river, only the head or the tail of the ship is under the impact of water flow, the impact of the water flow to the body of the ship is reduced, and the ship can realize the transportation and the hoisting of the arch rib sections in a raging river channel without being turned over from one side.