Results 11 to 20 of about 56,421 (241)
Machines, 2022 Multi-rope elevators are widely used in modern buildings. However, problems such as vibration, noise, uneven wear of key components and shortened life caused by the uneven distribution of rope tensions are still unsolved in the elevator industry.
Sung-Ki Lyu, Zhen Qin
exaly +4 more sources
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 +2 more sources
Laboratory Device for Checking the Functionality of the Elevator Rope Sensors [PDF]
Management Systems in Production Engineering, 2021 The paper describes the structural design of a laboratory device that allows for presenting operation, simulating work procedures and checking functionality of the elevator “rope sensors” when equalizing different tensile forces in partial ropes of a ...
Hrabovsky Leopold, Borovsky David
doaj +2 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
Vibration analysis of elevator rope with one vibration suppressor
Transactions of the JSME (in Japanese), 2018 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 ...
Takahiro Fujitani
exaly +3 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
OTIS Elevator Company Sponsored MQP: Elevator Rope Sway Monitoring System
, 2023 High-rise buildings are subject to sway due to wind, causing elevator ropes to impact the hoist way, disturbing users, and shortening the elevator’s lifespan.
Sanderville, Tyler +6 more
core +3 more sources
Damping force of air acting on vibrating elevator rope
Mechanical Engineering Journal, 2021 This paper describes the vibration damping characteristics of elevator ropes acted on by air. High-rise buildings sometimes resonate during earthquakes, and the elevator ropes in the building may swing significantly as a result. The vibration analysis of
Raichi TAKUMI, Hideo UTSUNO
doaj +1 more source
Damage accumulation in high performance synthetic fibre ropes [PDF]
This thesis presents the results of an investigation into the process of damage and failure in small diameter high performance synthetic fibre ropes namely Dyneema, Vectran and Technora ropes.
Koohgilani, Mehran
core +9 more sources
Nihon Kikai Gakkai ronbunshu, 2022 Elevators are essential for means of vertical transportation. Recently elevators, which are installed in high buildings, are long stroke. These elevator ropes are longer than conventional elevator ropes.
Shigeki OKAMURA +5 more
doaj +1 more source