Performance Evaluation of a Mechanical Brake to Prevent Reverse-direction Escalator Movement

초록

In this study, a mechanical brake (also known as a reverse-driving prevention device) is installed in an escalator to prevent, reduce, and mitigate escalator overspeed or reverse-driving accidents. Because it is a safety device that requires excellent braking performance and structural integrity, evaluating the strength and safety of parts is necessary to ensure the reliability of the device. However, due to the unique characteristics of the device, measuring the stress of major parts is difficult. In this study, the structural safety of the mechanical brake when the escalator overspeeds or a reverse-driving event occurs is verified using a finite element method. The study showed that the maximum stress generated in the entire system under braking conditions was 37.3 MPa and that the minimum safety factor was 3.8, confirming the structural safety of the system.

키워드