The utility model relates to a hook which is connected with other rigging fittings and can be used to change the lifting Angle and rotating at will.
Matters needing attention
1. Check the hook regularly according to the use situation, and the maximum time shall be no more than 1 month.
2. If the hook is found not to rotate flexibly during use, it should be stopped.
3. If plastic deformation of the hook is found, it should be stopped immediately.
4. Overload use is strictly prohibited.
5. It is strictly forbidden to stand under the hanging object during hoisting.
1. The lifting hook of the human-driven lifting mechanism is tested with 1.5 times rated load as the test load.
2. The lifting hook used by the power-driven lifting mechanism is tested with double rated load.
3. After the lifting hook is removed to check the load, there should be no obvious defects and deformation, and the increase of the opening should not exceed 0.25% of the original size.
4. The qualified lifting hook shall be marked in the low stress area of the lifting hook, including the rated lifting weight, factory mark or name, inspection mark and production number, etc.
The hook should be scrapped if one of the following situations occurs:
2. Wear of dangerous section reaches 10% of the original size;
3. The opening degree is 15% higher than the original size;
4. The torsional deformation of more than 10 °;
5. Plastic deformation of the dangerous section or the neck of the hook;
6. If the sleeve of plate hook is worn to 50% of the original size, it should be scrapped;
7. The spindle of plate hook should be scrapped when the wear reaches 50% of the original size