Results 11 to 20 of about 723 (295)
Research on a Wire Rope Breakage Detection Device for High-Speed Operation Based on the Multistage Excitation Principle [PDF]
Sensors, 2023 Wire rope breakage, as damage easily produced during the service period of wire rope, is an important factor affecting the safe operation of elevators.
Zhou Zhou +7 more
doaj +3 more sources
Analysis of Vibration Monitoring Data of Flexible Suspension Lifting Structure Based on Time-Varying Theory [PDF]
Sensors, 2020 An elevator is a typical flexible lifting machine. In order to monitor the vibration of elevator structure, the vibration characteristics of an elevator with a traction ratio of 1:1 has been tested experimentally.
Qifeng Peng +6 more
doaj +2 more sources
Advanced Engineering Research, 2023 Introduction. The safety problem and the situation with accidents during the operation of elevator installations are elucidated. The role of elevator rope defects as a factor of dangerous incidents is indicated from the point of view of statistics.
A. V. Panfilov +3 more
doaj +2 more sources
Diagnosis of Elevator Faults with LS-SVM Based on Optimization by K-CV [PDF]
Journal of Electrical and Computer Engineering, 2015 Several common elevator malfunctions were diagnosed with a least square support vector machine (LS-SVM). After acquiring vibration signals of various elevator functions, their energy characteristics and time domain indicators were extracted by ...
Zhou Wan +6 more
doaj +2 more sources
Application of Absolute Nodal Coordinate Formulation in Calculation of Space Elevator System
Applied Sciences, 2021 The space elevator system is a space tether system used to solve low-cost space transportation. Its high efficiency, large load, reusability and other characteristics have broad application prospects in the aerospace field.
Shihao Luo, Youhua Fan, Naigang Cui
doaj +2 more sources
Elevator Technology Improvements: A Snapshot
Encyclopedia, 2023 Efficient vertical transportation is vital to a skyscraper’s functional operation and the convenience and satisfaction of its tenants. This review complements the author’s previously published research by updating the readers on innovative hardware and ...
Kheir Al-Kodmany
doaj +2 more sources
Analysis of motion characteristics and dynamic modeling of traction machine brakes stopping car [PDF]
Scientific ReportsBraking distance is one of the important indicators for measuring elevator safety. At present, using the traction machine brakes to stop the traction sheave and indirectly stop the car is the mainstream stopping method for elevators with gearless machine.
Weimin Zhang +3 more
doaj +2 more sources
Suppression of transverse vibration of elevator rope using vertical vibration of counterweight
Nihon Kikai Gakkai ronbunshu, 2015 An elevator rope for high-rise building is forcibly excited by the displacement of the building caused by earthquakes and wind forces. In high-rise building, the elevator rope may resonate with the natural frequency of the building; hence, effective ...
Ibuki HIROSE, Hiroyuki KIMURA, Kou OGAWA
doaj +1 more source
Free vibration analysis of a string with vibration suppressor
Nihon Kikai Gakkai ronbunshu, 2014 When an elevator rope for a high-rise building is forcibly excited by the displacements of the building induced by wind forces and/or by long-period ground motion.
Hiroyuki KIMURA
doaj +1 more source
Nihon Kikai Gakkai ronbunshu, 2015 When an elevator rope for a high-rise building is forcibly excited by the displacements of the building induced by wind forces and/or by long-period ground motion, rope displacement becomes large even if the ground acceleration and the buildings ...
Hiroyuki KIMURA
doaj +1 more source