Load safety requirements for hook groups
Hook group is an important component of lifting machinery, divided into forged hooks and plate hooks. The hanging structure does not allow casting or welding. The newly put into use must have technical confirmation documents such as quality and other technical qualifications, otherwise safety technical inspection should be carried out and the performance should be confirmed before it can be used. Technical inspection items include: material inspection, and the hook material should be made of low-carbon calm steel or low-carbon alloy steel. Load test, the man-driven lifting mechanism uses a hook, and 1.5 times the rated load is used as the inspection load.
The hook has super load capacity and has a warranty device to prevent accidental decoupling of heavy objects from hanging. After the hook is removed to the inspection load, the increase in the opening degree should not exceed 0.25% of the original opening degree without any obvious defects or deformation. For surface inspection, the surface of the hook should be smooth and free of cracks, acute angles, burrs, cracks, etc.; marking and document inspection, including certificates of conformity, rated lifting weight, factory name, inspection mark, production number, etc.
Hook group is an important component of lifting machinery, divided into forged hooks and plate hooks. The hanging structure does not allow casting or welding. The newly put into use must have technical confirmation documents such as quality and other technical qualifications, otherwise safety technical inspection should be carried out and the performance should be confirmed before it can be used. Technical inspection items include: material inspection, and the hook material should be made of low-carbon calm steel or low-carbon alloy steel. Load test, the man-driven lifting mechanism uses a hook, and 1.5 times the rated load is used as the inspection load.
The hook has super load capacity and has a warranty device to prevent accidental decoupling of heavy objects from hanging. After the hook is removed to the inspection load, the increase in the opening degree should not exceed 0.25% of the original opening degree without any obvious defects or deformation. For surface inspection, the surface of the hook should be smooth and free of cracks, acute angles, burrs, cracks, etc.; marking and document inspection, including certificates of conformity, rated lifting weight, factory name, inspection mark, production number, etc.
Hook group is an important component of lifting machinery, divided into forged hooks and plate hooks. The hanging structure does not allow casting or welding. The newly put into use must have technical confirmation documents such as quality and other technical qualifications, otherwise safety technical inspection should be carried out and the performance should be confirmed before it can be used. Technical inspection items include: material inspection, and the hook material should be made of low-carbon calm steel or low-carbon alloy steel. Load test, the man-driven lifting mechanism uses a hook, and 1.5 times the rated load is used as the inspection load.
The hook has super load capacity and has a warranty device to prevent accidental decoupling of heavy objects from hanging. After the hook is removed to the inspection load, the increase in the opening degree should not exceed 0.25% of the original opening degree without any obvious defects or deformation. For surface inspection, the surface of the hook should be smooth and free of cracks, acute angles, burrs, cracks, etc.; marking and document inspection, including certificates of conformity, rated lifting weight, factory name, inspection mark, production number, etc.
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