Failure Analysis of the Escalator Driving Chain in an Escalator Reversal Accident

DOI

10.2991/wartia-16.2016.237How to use a DOI?

Keywords

Failure analysis, Escalator, Chain, decarburization, Fatigue crack

Abstract

An escalator accident occurred in a subway station of Shanghai City, resulting into that the running direction of the escalator sudden reversals, resulting in that some passengers were injured. In this paper, the failure analysis of chain plate of broken chain drive chain is analyzed. The escalator driving chain breakage is caused by the material deterioration of the transition chain link plate. The accident escalator driving chain adopts the transition segment, so that the stress concentration effects are exerted at the position of the transition linked chain plate bending corner. The decarburization phenomenon exists within the chain plate surface, resulting into that the chain plate generates fatigue cracking in the service process. The depth of the decarburization surface layer was measured as about 90 m. The surface-layer material softening accelerated the occurrence of the fatigue fracture.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bo Li
AU  - Xiao Liang
PY  - 2016/05
DA  - 2016/05
TI  - Failure Analysis of the Escalator Driving Chain in an Escalator Reversal Accident
BT  - Proceedings of the 2016 2nd Workshop on Advanced Research and Technology in Industry Applications
PB  - Atlantis Press
SP  - 1120
EP  - 1123
SN  - 2352-5401
UR  - https://doi.org/10.2991/wartia-16.2016.237
DO  - 10.2991/wartia-16.2016.237
ID  - Li2016/05
ER  -