Answer: The hook of the cantilever crane is an easy-to-wear part. During normal use, we must pay attention to the quality of the surface and interior of the hook. There are basically the following aspects:
1. The surface of the hook should be smooth and clean, without cracks, sharp angles, burrs, peeling and other defects;
2. There must be no cracks, white spots and inclusions that affect its safe use inside the hook;
3. Defects on the hooks of crane accessories are not allowed to be repaired by welding;
4. The wear of the dangerous section shall not reach 10% of the original size;
5. The opening degree should meet the requirements in 5.2 of GB10051;
6. The torsional deformation of the hook of the crane accessories, that is, the torsional angle of the hook body must not exceed 10°. ;
7. The dangerous section or the hook handle of the hook must not have plastic deformation;
8. The thread of the hook must not be corroded
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