Ship tank door anti-collision device of ship lift capable of adapting to different water level changes

The utility model provides a ship tank door anti-collision device of a ship lift capable of adapting to different water level changes. The ship tank door anti-collision device comprises a guide rail mechanism installed on the ship tank of the ship lift, wherein a float is arranged below the guide rail mechanism, a lifting mechanism is arranged above the float, the lifting mechanism is provided with a guide pulley, the lifting mechanism is installed on the guide rail mechanism through a guide pulley, and a ship blocking cable wire is connected to the lifting mechanism. The ship tank door anti-collision device of the ship lift capable of adapting to different water level changes provided by the utility model can be used for effectively preventing a ship from colliding the ship tank door of the ship lift to cause an accidental working condition of the ship lift, and preventing the damage of the ship due to direct collision with the ship tank door on a certain degree to improve the safety of the ship.