As an important safety device for elevators, steel wire ropes carry the weight of elevators and passengers or goods. Long term use and environmental impact can lead to the loss of steel wire ropes. So how do you determine if the elevator wire rope needs to be replaced? This article will analyze from the following aspects:

1. Check the surface of the steel wire rope

Firstly, it is possible to determine whether there is a problem with the elevator wire rope by observing and groping. Under normal conditions, the surface of the steel wire rope should be smooth and black, but if there are burrs, rust, flakes, wear, etc. on the surface, replacement is necessary.

In addition, it is also possible to judge the feel of the steel wire rope. Touch the surface of the steel wire rope with your hand. If the feel is rough and there are small particles, it indicates that the steel wire is severely damaged and needs to be replaced. If the touch feels smooth and flat during the process, then at most the silk color is slightly outdated and does not need to be replaced.

2. Check bending and elasticity

In addition to surface wear, attention should also be paid to checking the bending and elasticity of the steel wire rope. A normal steel wire rope should be full of elasticity and not show significant deformation during bending. If there is a situation of bending without rebound, replacement is necessary.

In most cases, the bending of the steel wire rope after elevator use is in compliance with normal requirements. However, when obvious damage occurs, such as bending beyond the specified range, wire breakage during the winding process, abnormal noise from the speed reducer brake, etc., it all means that the steel wire rope needs to be replaced.

3. Carry out load testing

In addition to observing the surface and testing the bending elasticity, a load testing is also required to check the quality and condition of the wire rope. Load testing is to distribute several standard weight loads to the steel wire rope of the elevator, and then test them under various working conditions such as sliding door, brake, and machine stop, and then check the key indicators such as the load bearing capacity and elastic recovery capacity of the steel wire rope according to the national standards.

During the load testing, if it is found that the wire rope cannot bear the standard load or shows abnormalities, such as looseness, it will deform or bend in the load testing, and so on. At this time, the wire rope needs to be replaced.

In a word, we can judge whether the elevator wire rope should be replaced by checking the surface, bending elasticity and load testing. In order to upgrade the safety and reliability of elevators, it is recommended that the replacement of steel wire ropes should not be considered only after problems occur. Instead, regular inspections and maintenance of elevators should be carried out in accordance with regulations, and timely replacement of steel wire ropes should be carried out based on the inspection results to ensure safer and more reliable elevators.