Under what circumstances should the scrap standard of steel rope hanging from a tower crane be implemented

31-07-2019

Tower lifting wire rope is an important part of Tower lifting, which is responsible for lifting heavy weights. Therefore, the maintenance of the steel wire rope of the tower crane should be carried out in a timely manner.

When the standard of scrap wire rope of the tower crane is reached, it must be strictly executed. Under what circumstances should the scrap standard of steel rope hanging from a tower be implemented.

L68B3 Mast Section

1. Number of broken wires
If the wire rope is scrapped, then the number of wires broken by the wire rope exceeds 5 in the 6D length and the number of wires broken in the 30D length exceeds 10.
2. Generating deformities
Steel rope scrap will lose its normal shape and produce deformities, such as waves, cage-like distortions, rope extruding, wire extruding, rope diameter partial enlargement, twisted knot, rope diameter partial reduction, part compressed, bending.
3. Wear
Although there is no broken wire at the end of the wire rope, the wire rope wears 40 % of its diameter, or when the wire rope decreases by 7 % or more relative to the nominal diameter, or the wire rope is obviously bent.

L68B3 Mast Section

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