How to reasonably select the structure type of steel wire rope? Which specifications have more advantages

How to reasonably select the structure type of steel wire rope? Which specifications have more advantages? It is easy to break the steel wire rope in the early stage in the use of port steel wire rope. Therefore, it is very important to find out the cause of wire rope core fracture and control it to prolong its service life.

Compared with the fiber core, the biggest advantage of the metal core is that it can provide effective support for the outer strand and maintain the stability of the steel wire rope structure. At the same time, it has relatively strong anti extrusion ability and high breaking force. For a long time in domestic ports, the steel wire rope core of container crane is the coexistence of fiber and metal core. However, practice has proved that the latter is always better than the former. Because of this, fiber core steel wire rope is eliminated in most ports, because before the greatest advantage of fiber core steel wire rope with relatively good oil storage effect has not been brought into full play, the instability of its external support capacity often leads to the destruction of steel wire rope structure and early wire breakage.

In fact, the steel wire rope of container crane is wound in a single layer on the drum, so it seems insignificant to select the metal core. However, when the steel wire rope passes through the pulley under load, the relatively poor supporting capacity of the fiber core will soon be exposed. As for the fact that the use of metal core will increase the rigidity of steel wire rope, it is largely affected by the same thinking, because from the perspective of geometric characteristics, the rope core is located in the center of the steel wire rope, and the main factors that determine the bending difficulty of the steel wire rope when it passes through the pulley are the number of strands in the outer layer of the rope and the strand structure.

In addition, in the relevant data, the rope core is not taken into account in the diameter design of the drum (pulley), which should be paid special attention to. Moreover, the steel ropes of container cranes recommended by the world's leading enterprises in steel rope production technology are all steel core structures.

Based on the important influence of factory lubrication of steel wire rope on its subsequent service life, relevant European standards clearly require it to be included in the ordering content. According to the past production process of steel wire rope in China, if only the rope is combined and sprayed with oil, although there is a large amount of grease adhered to the surface, which can reduce the friction between the steel wire rope and the matching wheel groove, it may not penetrate into the strand steel wire, so the grease can not play a good role in reducing the sliding friction between the strand steel wires when the steel wire rope passes through the pulley, and may cause the disorder of the strand steel wire, Especially when the ambient temperature is relatively low, the situation will be more serious.

The above is how to reasonably select the structure type of steel wire rope? Which specifications have more advantages? I hope it will help you!