There are two main reasons for uneven tension of elevator wire ropes: first, after the elevator is running, the structural elongation of each wire rope may be inconsistent; second, when the elevator is installed, the basic static tension may be inconsistent Case.
Whether it is during the elevator inspection stage or during the elevator installation stage, you only need to observe the height of the tension adjustment spring to detect the uneven tension of the elevator wire rope. At the same time, after the elevator has been running for a period of time, the elevator traction wire rope will undergo structural elongation, causing a large change in the tension of the wire rope. These factors may cause uneven tension of the elevator wire rope.
If the tension of the elevator wire rope is uneven, it will cause uneven wear of the rope groove and the wire rope; and if uneven wear exists for a long time, it will inevitably lead to circumferential speed (each wire rope), diameter size (each groove pitch circle) and other parameters are different, which will induce obvious relative sliding of the steel wire rope in the rope groove.
As we all know, during the operation of the elevator, the running speed of the steel wire rope is inversely proportional to its own wear amount. However, the operation of the elevator requires that all the steel wire ropes can run the same stroke. In this way, the two strands of elevator steel wire ropes with different amounts of wear will inevitably appear relative to each other. Slip, in the long run, will further increase the wear of the wire rope, and the increase in wear will increase the relative slip, creating a serious vicious cycle.
The final result is that the extent to which the wire rope damages the rope groove and its own wear will increase significantly, causing the rope groove to be completely scrapped or the wire rope to be completely unusable in a very short period of time.
