Assessment of load of load-bearing elements of the passenger elevator based on regular monitoring results

Abstract

Introduction: This article is devoted to improving the safety of elevators — the most popular hoisting-and-transport devices. The paper presents the results of an indirect assessment of load of load-bearing elements of elevators for residential buildings based on the results of regular monitoring by service organizations.Problem Statement. Processing of the monitoring results was carried out on the basis of the idea of random nature of influencing factors and performance indicators. The data of observations of 15 elevator units of various load capacities installed in residential buildings with different number of storeys and passengers were processed.Theoretical Part. The following indicators are accepted as the main ones, which characterize the load of the main elevator drive: machine time coefficient and specific number of starts per minute of pure machine time. For each of the indicators, distribution functions and probability densities are constructed.Conclusion. Indicators of loading of the elevators vary within wide limits; no stable correlation between the indicators was established; each elevator is characterized by a pair of values of the machine time coefficient and the number of inclusions. The main purpose of the results is the possibility of using them to assess the adequacy of the formation of loading modes in the simulation of passenger elevators in comparison with real indicators.

Keywords

• безопасность лифтов
• мониторинг функционирования лифтов
• факторы нагруженности привода
• коэффициент машинного времени
• частота включений главного привода
• статистические характеристики режимов работы лифта