PROBLEM TO BE SOLVED: To provide a monitoring alarm before and after loading, and to issue an alarm when an abnormality occurs, by equilibrium-synchronizing the push expansion and contraction of a traveler crane during push work and allowing it to travel and lock. We provide a smart traveler crane system for continuous rigid-frame bridge construction. By controlling the operating status of a hydraulic cylinder with a smart control unit, the push expansion and contraction of a traveler crane is balanced and synchronized during push work, and the finished rolled screw pattern steel is run and locked at any point before and after. Yes, if there is an abnormality in the receiving force change of the tilt angle sensor or if there is an abnormal slip in the horizontal tilt angle of the traveler crane, the smart control unit will immediately monitor and issue an alarm, and the weight sensor will issue the traveler crane. Before and after loading, the smart control unit automatically weighs the weight and issues a monitoring alarm. In addition, there is no risk of damaging the finished rolled screw pattern steel when sandwiching the finish rolled screw pattern steel. [Selection diagram] Fig. 1
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