For electric hoist, galvanized steel wire rope is not allowed to have an infinite service life, so for the total amount and characteristics of its broken wire is clearly stipulated, beyond the relevant requirements to solve the damage.
Rope end broken wire: when wire is broken at or around the rope end, even if the number of gearbox jacks is very small, the ground stress at this position is very high on the surface, which may be caused by the non-standard installation of rope end, and the damage should be identified. If the rope length is allowed, the position of broken wire should be cut off and installed effectively again.
Partial aggregation of broken wire: if the broken wire is close to a partial aggregation, the multi-functional jack galvanized steel wire rope should be damaged. If such broken wires are clustered in the rope length category of less than 6d or are concentrated in any strand, the galvanized wire rope shall be damaged even if the number of broken wires is less than the listed value.
Broken wires increase rate: in some places, fatigue was the cause of galvanized steel wire rope damage amount is the key reason, after the application is in a stage of wire-breaking only occur gradually, but the broken wires improve slowly, the time interval is getting more and more short, in this case, the pneumatic jack in order to better judge increase rate of the broken wires, broken wires ascending condition should careful inspection and record. Determine this: regularity can be used to determine the date of future damage of galvanized steel wire rope.
Rope breakage: if the whole rope breakage occurs, the galvanized steel wire rope should be damaged.
The rope diameter reduction caused by the destruction of the rope core: when the chemical fiber core of the galvanized steel wire rope is destroyed or the fracture of the steel core leads to the significant reduction of the rope diameter, the galvanized steel wire rope should be damaged.
Subtle damage, especially when the stresses in the whole strand are well balanced, is likely to be insignificant by ordinary methods of detection. Little do they know that this kind of situation will cause the compressive strength of galvanized steel wire rope to be greatly reduced. Therefore, when there are all signs of minor internal damage, the galvanized steel wire rope should be tested internally to find out. Once confirmed damaged, the galvanized wire rope should be damaged.
Characteristics and total number of wire rope broken by electric jack manufacturer
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