Frequent Luffing Wire Rope Damage Issue
Frequent Luffing Wire Rope Damage Issue
(OP)
It is observed that the Wire Rope used for the Luffing Operations of our Crane is getting frequently damaged (2-3 Months - 100hrs of Working). There were no fouling observed at any point on the Crane and the Fleeting Angle is also within acceptable limits (0.7 Degrees as per the Supplier). We are using a 6x36 construction Right Hand Lay Wire Rope (Minimum Breaking Strenth 372KN) and is tightly wound on the drum.
Can any one provide any insights as to what might be causing this abrupt failure?
Can any one provide any insights as to what might be causing this abrupt failure?





RE: Frequent Luffing Wire Rope Damage Issue
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RE: Frequent Luffing Wire Rope Damage Issue
B.E.
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RE: Frequent Luffing Wire Rope Damage Issue
Get a maintenance manual on this crane to be sure that all sheaves and drum have the proper diameters.
RE: Frequent Luffing Wire Rope Damage Issue
We had inspected the Sheaves and they were found to be alright(No signs of damage found on the sheaves as such).
(Image with marking of position of the cuts on the wire rope)
RE: Frequent Luffing Wire Rope Damage Issue
RE: Frequent Luffing Wire Rope Damage Issue
The spec's mentions RHO Wire Rope.
Can I know What factors would determine the Lay orientation of the Rope?
We were also discussing on the Fleeting Angle of the Wire Rope onto the Drumfrom the pulley amongst our team. The supplier mentions that the Fleet angle incorporated here 0.56 Degree which is according to him in the acceptable range(0.5 Degrees to 2.5 Degrees). Would increasing the Fleeting angle to say 0.8-0.9 Degree reduce the stresses during Overlapping of Wire Rope at Crossover points?
Many Thanks for your valuable inputs.
RE: Frequent Luffing Wire Rope Damage Issue
Have you discussed the problem with the crane manufacturer and the wire rope supplier? Is this crane used strictly for lifting and not for example dragging buckets? Any side loading taking place?
RE: Frequent Luffing Wire Rope Damage Issue
too-small radius. What does wire rope manufacturer say?
RE: Frequent Luffing Wire Rope Damage Issue
RE: Frequent Luffing Wire Rope Damage Issue
How did it last?