Actual Rope Research and Products for Elevator Applications

摘要

Steel wire ropes have an interface function in the system traction elevator. The ropes influence the dimensioning of the rope drive as well as other themes as costs, energy efficiency, used shaft space, production, installation and maintenance. Smaller rope diameter will decrease the diameter of the traction and the diverter pulleys. The use of steel wire ropes with a diameter d below 8mm and a ratio of diameter pulley to rope D/d below 40 will open new possiblities in elevator system construction. Steel wire ropes covered by materials with higher friction coefficient will allow to reduce wrapping angle of the traction pulley and avoid the sharp traction grooves. Flat and slim terminations for steel wire ropes have the advantage in increase liftetime avoiding incline angles on the pulleys. Additional the method for calculation of the expected number of trips has to be improved especially for complex rope courses in the elevator system. Certificates issued by Notified Bodies are necessary to show the suitability of new products in elevators. The influence of new rope products and methods and their linking-up will be presented.