Crane rigging refers to the connecting parts used in lifting and handling work, including hooks, slings, wire ropes, slings, etc. Slings play an important role in lifting operations and their safety must be ensured. Therefore, the inspection and scrapping standards for rigging are very important.
Sling inspection standards
1.
Crane Hooks
(1) The wear of the hooks should be checked in time and a comprehensive inspection should be carried out at least every 6 months.
(2) The wear of the crossbeam and hook of the hook should be less than 5%.
(3) Defects such as cracks, fractures, deformation or fatigue fractures on the hooks should be discovered and replaced in time.
2. Slings
(1) The wire rope should be properly woven and should not have defects such as impurities, entanglement, broken wires, broken strands or corrosion.
(2) The locking end of the wire rope should be able to properly fix the rope and should not be loose or cracked.
The hanging end of the wire rope should have the correct large bending radius, and excessive tilting of the rope should be avoided during use.
3. Lifting equipment
(1) The contraction point and connecting bolts of the lifting equipment should be carefully checked, and the bolts should be ensured to be tight.
(2) The load point of the lifting equipment should be the same as the load point of the wire rope or other ropes.
(3) The strength and bending radius of the lifting equipment should meet the operating requirements, and excessive tilting should be avoided.
4. Static load test
The static load test of the lifting sling should be carried out in accordance with the "Regulations on Safety Management of Lifting Machinery".
Lifting equipment scrapping standards
2. Crane Hook
(1) When quality problems such as bending, fatigue cracks, fractures, deformation, etc. cannot be repaired.
(2) When the wear exceeds 5% of the hook beam or fishing rod.
Exceeding the standard service life of the hook, generally 5 years
3. Sling
(1) Deformed, twisted, rusted or damaged rope strands.
(2) The sling is in a state of being cut or repeatedly bent.
(3) When the wear exceeds 10% of the diameter or circumference.
(4) When the standard service life of the sling is exceeded, which is generally 5 years.
4. Hoist
(1) Fracture or fatigue crack.
(2) Rusted or damaged structural parts cannot be repaired.
(3) When the standard service life of the sling is exceeded, which is generally 5 years.
Conclusion
The inspection and scrapping standards for crane slings are an important part of ensuring safe production, and are very important for improving work efficiency and ensuring operational safety. Therefore, we should regularly inspect and repair slings in accordance with the provisions of the inspection and scrapping standards, and operate strictly in accordance with the standards with safety as the premise.
