The important role of the dock crane is self-evident and has a great effect on the economic prosperity of the terminal. The dock crane has a great role in handling cargo at the dock and loading and unloading equipment, which improves efficiency. Among them, the hook is an important component, which relies on a hook to work. The selection of hooks for dock cranes is very high.
    The surface of the hook should be smooth and free of cracks, sharp angles, and cracks in the hair. Cast hooks must not be used. In use, it should be inspected, repaired and scrapped according to relevant requirements. The hook material should be made of high-quality low-carbon structural steel or low-carbon alloy steel, and the hook material affects the safety of use. The inspection of the hook is very important and the test load is valued according to national standards. After the hook is removed from the inspection load, the opening shall not increase by more than 0.25% of the original opening without any significant defects or changes. The hook should be able to reliably support twice the inspection load without falling off.

    In short, the quality of the hook directly affects the safety of the use. It is necessary to ensure the performance of the hook and meet the requirements of production and use. In the operation, cracks or defects should be replaced in time to avoid harm.