Cable Disc Elevator: Static Friction Investigation

Webb, Colin; Tuck, Michael

doi:10.1007/s42461-020-00358-8

Cited by 2 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further investigations show that under the effect of strong impact forces, the friction loss between hoist rope and traction sheave increases [10,11]. Moreover, strong vibrations affect the contact force between the hoist rope and the traction sheave.…”

Section: Introductionmentioning

confidence: 88%

Experiment Research on Emergency Stop Vibrations of Key Components in the Friction Vertical Lifting System

Peng

et al. 2022

Shock and Vibration

View full text Add to dashboard Cite

In order to analyze emergency stop vibration of the friction vertical lifting system under different loads, a loading experiment was carried out, and the longitudinal vibration characteristics of the carriage, frame, and steel rope were measured during the emergency braking process of an elevator. Accordingly, it is found that the load mass does not affect the peak deceleration value of the car frame and the wire rope during downwards emergency stop. Then, vertical vibration is explored using the time-varying vibration analysis theory. The obtained results show that when analyzing the vibration of objects on both sides of the traction wheel, the deceleration of the wire rope on both sides of the traction wheel are not equal, and the influence of the pressure change during the traction-wheel friction should be considered in calculations. This article may provide a reference to calculate the steel rope tension of the elevator and mine hoist.

show abstract

Section: Introductionmentioning

confidence: 88%

Experiment Research on Emergency Stop Vibrations of Key Components in the Friction Vertical Lifting System

Peng

et al. 2022

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…In [17], results are presented that demonstrate that the vertical vibrations of the elevator traction system are maximized during the braking operation. In [18], it is shown that strong vibrations affect the contact force between the hoist rope and the traction sheave, consequently resulting in slipping between the hoist rope and the traction sheave.…”

Section: Introductionmentioning

confidence: 99%

Active Control System Applied to Vibration Level Control in High-Speed Elevators

Gonçalves

Balthazar

Oliveira

et al. 2022

IJRCS

View full text Add to dashboard Cite

This work presents an active control system applied to vibration level reduction in high-performance vertical transport, aiming at improving the passengers’ comfort in high-speed elevators. The control system design includes the use of a Proportional Integral Derivative (PID) control. Three strategies were proposed in order to achieve a 90% reduction in the vibration amplitudes: (I) the consecutive reduction of 90% of the displacements, (II) the consecutive reduction of 90% of the velocity, and (III) the consecutive reduction of 90% of the acceleration. The presentation of these three proposals allows their application for the use of different sensors. The performance of each strategy was evaluated through mathematical modeling and numerical simulations of a vertical transport with 4 degrees of freedom, submitted to excitations arising from rail deformations. Vibration and comfort levels in the cabin were numerically analyzed, taking into account ISO 2631 and BS 6841 standards for elevator lateral acceleration level and comfort level felt by passengers. Numerical simulations showed that the force required to reduce the vibration levels is practically the same for the three proposed strategies. However, strategy (III) – the successive reduction of 90% of acceleration – proved to be more efficient at improving passengers’ comfort level when compared to the other two strategies.

show abstract

Cable Disc Elevator: Static Friction Investigation

Cited by 2 publications

References 2 publications

Experiment Research on Emergency Stop Vibrations of Key Components in the Friction Vertical Lifting System

Experiment Research on Emergency Stop Vibrations of Key Components in the Friction Vertical Lifting System

Active Control System Applied to Vibration Level Control in High-Speed Elevators

Contact Info

Product

Resources

About