The utility model relates to a ship lift anti -collision beam belongs to hydraulic and hydroelectric engineering gate technical field. Still there is not a structural design reasonable now, simple to operate, intensity, rigidity are good, good reliability, long service life, the ship lift anti -collision beam at self -adaptive control center. The utility model discloses an anticollision roof beam body and crashproof roof beam groove, the both ends of the anticollision roof beam body all are located crashproof roof beam inslot, and its structural feature lies in: still include guidance wheel, side guide pulley and rubber pad, the both sides of the anticollision roof beam body all are fixed with the guidance wheel, the guidance wheel all is located crashproof roof beam inslot, and the cell wall in this guidance wheel and crashproof roof beam groove contacts, the one side at the crashproof roof beam body is installed to the side guide pulley, the top in anticollision roof beam groove be provided with with cell wall looks vertically turn -ups, side guide pulley and turn -ups contact, rubber rubber mat fixation is at the opposite side of the crashproof roof beam body. The utility model has the advantages of reasonable structure design, simple to operate, intensity, rigidity are good, good reliability, long service life.