On the premise of ensuring the structural strength and safety performance of escalator truss, in order to improve the efficiency of design and development of serial escalator truss, a parametric finite element analysis platform for escalator truss is developed by using the secondary development of finite element method and Visual C++ and data interface technology. In this paper, the structural design and strength characteristics of escalator truss with different parameters are studied, and the strength characteristics of escalator truss with maximum boundary load are analysed. The results show that by using the parameterized finite element analysis platform of escalator, users can get the structural strength results of the serialized truss through automatic modelling calculation only by inputting parameters. While satisfying the structural strength of the truss, the analysis process is greatly simplified and the analysis efficiency is improved.

As the amount of using elevators and annual elevators grows, the injury accidents still happen frequently every year under the circumstances of elevator manufacture and maintenance available. Most accidents result from the failure of door system and breaks which causes shearing and crushing. The Unintended Car Movement Protection System (UCMP) is listed into the national mandatory criteria to prevent injury accidents. In this paper, the composition of UCMP is simply analyzed, and inspection method is discussed.