The utility model relates to a high tension transmission line exhibition unwrapping wire field, be to current conventional transmission line crossing structure establish chronic, the transition is slow, occupy the great and assembled cut to fast from going up and down crossing structure that provides in place. Including the support body platform with locate the net that binds on the two support body platforms, all be connected with two support body platforms at the net both ends of binding, the support body platform includes the automobile body platform, locate on the automobile body platform be used for supporting bind the net have the function flexible arm, be used for supporting and stick up the telescopic bracket who has a flexible function of flexible arm, flexible underarm end and automobile body platform swing joint, telescopic bracket one end connect the automobile body platform, flexible arm is connected to the other end, all is equipped with the interface that inserts the hydraulic pump on telescopic bracket and the flexible arm. The utility model discloses having crossing structure and realizing reaching fast, it is less to occupy the place, the simple operation, and the construction is safe, convenient, the time limit for a project is short, but cyclic utilization, the economical rationality.