Analysis the Cause of Step Fracture in the Escalator Step Arch Event

Abstract

The Escalator steps are one of the most important parts of escalators. The step is a special structure of the four-wheel car, there are two main wheel and two auxiliary wheel. In this paper, by taking a variety of analytical methods, such as visual inspection, chemical composition analysis, and microstructure, analysis on the cause of step fracture in the escalator step arch event. According to analysis, we can conclude that the escalator step collision event is not caused by the step body. Due to improper adjustment of escalator ladder, causing the step pedal to align with the upper comb plate, eventually triggering a step collision event.