why should the wire rope on both sides of the drum be retained for more than 3 circles?

- May 10, 2018 -

When the hook is placed at the lowest position, why should the wire rope on both sides of the drum be retained for more than 3 circles?


Because the end of the wire rope is fixed on the drum by the press plate, in order to prevent the excessive tensile force draw out the wire rope from the press plate or breaking the plate screw and falling down, it is generally required that the wire rope on both sides of the drum should be kept at least 3 rings, in order to ensure a larger friction between the wire rope and the drum. Thus, the tension of the press plate is reduced.


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