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Failure Analysis of Steel Wire Rope Conveyor Belt

Apr. 22, 2022

With the development of science and technology, steel cord conveyor belt has become the main conveying equipment for metallurgy, steel mill, coal mine and other industries with its characteristics of long conveying distance, heavy load and large conveying capacity. The reliance of heavy industries on steel cord conveyor belt is gradually increasing, and people are more and more concerned about the quality and operation condition of steel cord conveyor belt.


Steel cord conveyor belt is prone to wear, deformation, rope breakage and other failures in long-term operation, and with the passage of time, the strength of wire rope conveyor belt will be reduced until it breaks. The most serious situation may cause casualties and bring huge economic loss to the company. In order to avoid the above situation, we briefly analyze the reasons and solutions for the failure of wire rope conveyor belt.


Failure Analysis of Steel Wire Rope Conveyor Belt

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Take coal mine as an example, the frequent failure of steel wire rope conveyor belt in coal mine conveying system is tearing or even breaking. The reason is that there are many other factors besides normal wear and tear that can lead to this situation. In order to prevent the belt from breaking, the maintenance personnel of the conveyor system should try to extend the service life of the conveyor belt, reduce unnecessary downtime and lower the accident rate.

Steel cord conveyor belt joint jerking and rope breakage are common failures. Severe damage to the cover rubber or corrosion of the joint terminals can cause the conveyor belt joints to jerk. Distinguishing the type of failure can identify the cause of the failure.


Failure Analysis of Steel Wire Rope Conveyor Belt

Uneven belt tension distribution.

Steel cord conveyor belts are usually grooved to increase the coal loading capacity. When a steel cord conveyor belt transitions from a horizontal section to a trough section, the edges of the belt are subjected to greater tensile stress than the middle. Uneven distribution of belt tension can make the belt more susceptible to breakage.

 

Fatigue Damage

Due to space constraints, the steel core needs to be repeatedly bent and continuously wrapped around the pulleys and pulleys as the belt runs. Repeatedly bent belt cores are subjected to fatigue loads during each working cycle, which can cause repeated fatigue damage. The service life of the steel cord conveyor belt can be extended by considering the drive unit of the conveyor, the installation size, and the quality of the pulleys.


Failure Analysis of Steel Wire Rope Conveyor Belt

 

Corrosion

Steel cord conveyor belt works for a long time, and the upper and lower cover layers will gradually show wear, cracking and aging. The cracking of the cover layer is caused by the cracking of the joints. If it is not repaired in time, the steel wire rope will be exposed and moisture will penetrate into the conveyor belt, causing rusting.

 

Excessive external force

This will cause the conveyor belt to be damaged or even broken when it is stretched violently by sudden external pressure. Also, material stuck in the guide chute or distribution plate can cause the risk of belt breakage.

 

Conclusion

Early detection of wire cord fatigue, wire breakage and cramping defects, analysis and early treatment of the collected defects or damages can well avoid the occurrence of fracture accidents.

 

Failure Analysis of Steel Wire Rope Conveyor Belt

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