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Study on reliability of emergency braking performance of high-speed and heavy-load monorail crane
Hao Lu 1,2
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School of Mechatronic Engineering, China University of Mining and Technology, China
Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, China University of Mining and Technology, China
China Mining Products Safety Approval and Certification Center, China
Submission date: 2023-08-12
Final revision date: 2023-10-19
Acceptance date: 2023-11-04
Online publication date: 2023-11-10
Publication date: 2023-11-10
Corresponding author
Hao Lu   

School of Mechatronic Engineering, China University of Mining and Technology, 221116, Xuzhou, China
  • The random response of braking performance is obtained by combining LHS and DD.
  • High-order moment saddlepoint approximation is used to estimate the failure probability.
  • Reasonable selection of relevant parameters is important for braking safety.
  • The failure modes of monorail crane mainly include braking distance failure and braking temperature failure.
The reliability of monorail crane braking system has an important influence on braking safety, high-speed and heavy-load operation, which poses great challenges to braking safety, and it is necessary to evaluate its braking reliability accurately and efficiently. Firstly, the dynamic performance and thermal-mechanical coupling characteristics of high-speed and heavy-load monorail crane under different braking parameters were analyzed. Secondly, the random response model of braking distance and braking temperature was established by combining the design of experiment method (DoE) and Dendrite Net (DD). Finally, the high-order moment saddlepoint approximation (SPA) method was used to evaluate the emergency braking reliability of the monorail crane. The results can provide a reference for the selection of key parameters and the evaluation of braking safety of the monorail crane braking system under high-speed and heavy-load conditions.
The authors gratefully acknowledge the financial supports from National Natural Science Foundation of China (52375277, 52274155)52274155), the National Key Research and Development Program (2020YFB1314100) and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).