Case Analysis and Countermeasure Study on the Failure of the Counterweight Anti-Rope Sheave in Traction Elevators
The counterweight anti-rope sheave of a traction elevator is a movable pulley installed above the counterweight frame.The counterweight,along with the counterweight anti-rope pulley and other devices,jointly improves the force situation of the traction pulley,reducing the torque on the traction pulley and achieving the effect of reducing the output power of the traction machine.With the increasing number of elevator accidents caused by the failure of counterweight anti-rope pulleys in recent years,the elevator industry has begun to attach great importance to anti-rope pulleys.The 2023 version of the elevator inspection regulations also specifies the inspection requirements for non-metallic anti-rope pulleys.This article combines the working characteristics of the counterweight anti-rope pulley,analyzes its failure cases,and puts forward relevant suggestions.
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