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Does the rope used in the elevator have a service life
2024-06-04
1 Nature and number of broken wires The overall design of the lifting machinery does not allow the wire rope to have an infinite long life. For 6 - and 8-strand wire ropes, breaking occurs mainly on the outside. For the multi-strand wire rope (typical multi-strand structure) is different, most of this wire rope break occurs in the interior, so it is an "invisible" break. 2 The end of the rope is broken When there is a broken wire at or near the end of the rope, even if the number is small, it indicates that the stress in the part is high, which may be caused by the incorrect installation of the rope end, and the cause of the damage should be identified. If the length of the rope allows, the broken wire should be cut and re-installed reasonably. 3 Local aggregation of broken wires If the broken wires are close together to form a local aggregation, the wire rope should be scrapped. If such broken wires are concentrated in a rope length range of less than 6d, or in any rope strand, then even if the number of broken wires is less than the value listed in the table, the wire rope should be scrapped. |
