Issue 2/2010
Jörg Hellmich, Graduate Engineer
Technical systems are, in general, becoming ever more complex. Electronic systems usually equipped with tiny embedded microprocessors are implementing new functions, increasing convenience or improving system safety and reliability. Responding to signals made provided by sensors or arriving at inputs, these processors employ the algorithms written in the internal firmware to determine what the assembly actually does. The more information available about the system, the broader the basis upon which decisions can be made.
Dr.-Ing Wolfram Vogel
The steel wire ropes used in traction lifts are exposed to bending fatigue as they pass over the traction sheaves and deflection pulleys. As regards the bending sequence, attention must be paid to the occurrence of simple and reverse bending processes, which exert a greater or lesser impact on rope service life. In traction lifts, reverse bending processes occur in steel wire ropes when travelling over traction sheaves and deflection pulleys where the traction is arranged above or below next to the travel path. Reverse bending processes in steel wire ropes also have to be assumed in situations where an additional deflection is needed to increase the wrapping angle of the traction sheave and consequently the traction capability.
Rory Smith
Since around 1998, a PC based lift simulation system has been available for general use. The system permitted one to model any type of building and any type of traffic. However, the results were quite different than what one would expect based upon the results of Up Peak Analysis. This difference in results has led to the conclusion that while simulation is a way to evaluate the performance of a lift system it cannot be used as a tool for designing an appropriate lift system. Simulation can be used for lift system design but a new methodology is needed . This methodology is explained.
Elevator trade fair in the meta city
The third International Elevator & Escalator Expo was held again held in the Bombay Exhibition Center in Mumbai.
October 19 and 20, 2010
.jpg)
The "European Lift Congress in Heilbronn" will be taking place this year on October 19 and 20, 2010. Preparations are largely completed for this, the fourth event of its kind, making it possible to provide advance information about the planned program and the subjects of the speeches.
