Diagnostics of the Passenger Lift Winch

Abstract

The proposal of the diagnostics methodology for the passenger lift gear is presented in this article. The selected device is tested against the emitted volume of sound and vibrations observed in the regular operation (driving operation as per agreed testing sequence). Thermal images are prepared to catch incorrect operation of the gear mechanisms. On the basis of received measurements for the sound volume, accelerations (vibrations), the analysis of vibrations frequency and thermal images, an attempt was made to diagnose the gear condition and to indicate possible reasons of the malfunctions condition.

Application of Stray Magnetic Field for Monitoring the Wear Degree in Steel Components of the Lift Guide Rail System

“…The methodology developed by the authors enabled stating the changing values of magnetic induction in the wire rope being bent after each subsequent bend, which in turn enabled evaluating the number of wire rope bends in relation to the service life. In article [7], the authors attempted to diagnose the condition of the gearbox and indicate the possible causes of its faulty operation. The obtained results were recorded for a passenger lift with a lifting capacity of 630 kg.…”

Optimisation of the Lift Carrying Frame Construction by Using Finite Element Method

“…The carrying frame has several key subassemblies: the assembly of the lower beams, the assembly of the upper beams, the vertical beams that join the lower assembly with the upper one and the semi-platforms [11]. Both the assembly of the lower and the upper beams is made from cold rolled profile (bent with roll forming technology) with a half closed channel bar with the dimensions of 140x50x60x4, the scheme of which is presented in Fig.…”