When determining the clamping position of a large ship's lifting pliers, the locking rod or spring hook must be kept away from steel cables, chains, rings, and loads during the winding up or down process.

　　Check whether the installation position of the lifting pliers is higher than the center of gravity of the lifting object.

　　Correct installation and prevention of falling objects

　　Verify that the locking position (spring hook or lever) is in good locking condition.

　　Verify that the lifting pliers are safely inserted.

　　The state of the lifting object at the time of landing must be considered to determine the installation position. Especially when the stability of the landing is not good lifting objects are quite dangerous.

　　We need to pay attention to the fact that the number of lifting injuries in large ships is more than that in lifting pliers.

　　The occurrence of this kind of accident is mainly caused by the improper tying method of lifting pliers, poor driver control, improper selection of lifting gear and rigging, and failure of lifting and overload limiter. Therefore, it is necessary to strengthen the preventive measures for lifting tongs:

　　Correct installation and prevention of falling objects

　　First of all, the promotion height limit device to ensure effective, to avoid over-lifting accidents, the driver should check whether the promotion height limit device is effective before homework, failure should not start;

　　Secondly, pay attention to check the large ship lifting pliers, whether there is wear or crack deformation, the scrap is not allowed to use;

　　Third, to check the condition of the wire rope, each shift must carefully inspect the wire rope from beginning to end before operation, whether there is wear, broken wire, broken off, there is no obvious deformation, kinks, bending, etc., does not meet the need to be replaced in time.

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