A qualified lifting belt, its safety factor must be guaranteed ≥6, and many people are not very clear about the concept of lifting belt safety factor, in the end what is the safety factor? How is the safety factor calculated? The following by Chenghua manufacturing for you to answer this puzzle.
To understand the safety factor of the lifting belt, we must know two other values, one is the allowable stress and one is the ultimate stress. The calculation method of the safety factor is: safety factor = ultimate stress/allowable stress, here we need to understand that the safety factor must be greater than 1, that is to say, the ultimate stress must be greater than the allowable stress, then what is the ultimate stress and allowable stress?
Simply speaking, the ultimate stress refers to the stress value of the lifting belt when the synthetic fiber is destroyed and its function is lost during the load process, so that normal lifting work cannot be carried out. This load value is the ultimate stress of the lifting belt. Frankly speaking, the allowable stress can be understood as the rated load of the lifting belt, this value is based on the strength of materials, processing quality and other aspects of the test.
If our lifting belt safety factor is 6 as the standard, then the maximum rated load of a lifting belt with a tested ultimate stress of 24 tons is 4, which is a prerequisite to ensure the safe use of the lifting belt. Finally, Chenghua Manufacturing warm remind you that the use of lifting belt must be carried out in the rated load, only in this way can ensure the safety of lifting operation.