As we all know, crane parts are indispensable parts in lifting equipment. We know that there are many lifting parts, including wheels, hooks, wire ropes, rope guides, etc. Crane hook is a commonly used accessory in lifting accessories. It is mainly used to hook goods or materials, so its quality requirements are very strict.
To what extent is it necessary to replace a new hook?
When one of the following situations occurs, the crane hook should be replaced immediately.
1. When the hook has cracks, it must be scrapped.
2. When the wear degree of the dangerous part of the hook reaches 10% of the original size, it should be scrapped immediately.
3. When the opening degree of the hook increases by 15% compared with the original size, it should be scrapped immediately.
4. When the torsional deformation of the hook exceeds 10¡ã, it should be scrapped immediately.
5. When the dangerous part of the hook or the neck of the hook has plastic deformation, it should be scrapped immediately.
6. When the hook sleeve of the hook plate is worn to 5% of the original size, the hook sleeve should be scrapped.
7. When the mandrel of the hook plate is worn to 5% of the original size, the mandrel should be scrapped.
The crane hook is an important part of the crane equipment, and its maintenance is essential to ensure the safe operation of the equipment. Here are some precautions for hook maintenance:
Regularly check the wear and deformation of the hook:
Hooks are prone to wear, deformation, cracks and other problems during long-term use, so it is necessary to regularly check the appearance of the hook to ensure that it has no obvious damage.
Inspect the opening, hook, slide and other parts of the hook to ensure that there is no wear or deformation.
Check the lubrication condition of the hook:
The hook needs to be lubricated regularly, especially the hinged part of the hook, to reduce friction and extend the service life.
Use special lubricating oil, ensure that the lubricating oil is not expired, and replace it regularly.
Check the strength and safety of the hook:
The material and strength of the hook should meet the design requirements, and the hook should not be used beyond the rated load.
Check whether the hook has cracks or fatigue, especially when carrying high loads.
Hook welding inspection:
The welding parts of the hook need to be checked regularly to prevent cracks or poor welding.
If problems are found, the hook should be repaired or replaced in time.
Marking and use of hooks:
Hooks should be clearly marked with the maximum load capacity to ensure that operators will not overload when using them.
It is strictly forbidden to mix hooks with other tools or equipment to avoid damaging the hooks or reducing their service life.
Perform safety tests on hooks regularly:
Load tests on hooks should be carried out at prescribed intervals to check their load capacity.
During the test, avoid exceeding the safe load of the hooks.
Storage and maintenance of hooks:
When not in use, hooks should be stored in a dry, well-ventilated place to avoid corrosion or damage to the hooks.
Hooks should be kept away from sharp objects to prevent damage to the hooks.
Through regular maintenance and inspection, the safety and reliability of the hooks can be ensured, the occurrence of failures can be reduced, and the safe conduct of lifting operations can be ensured.
