Vol.10, No 1, 2012 pp. 55 - 62
UDC
629.004.68
IMPROVEMENT OF THE SPENSION SYSTEM
OF THE WAGONS WITH LAMINATED SPRINGS
Dragan Petrović, Milan Bižić
University of Kragujevac, Faculty of Mechanical Engineering Kraljevo, Kraljevo, Serbia
E-mail: petrovic.d@mfkv.kg.ac.rs
In the exploitation of the laminated-spring freight wagons, a large number of suspension element fractures are detected. These fractures decrease transportation efficiency and are very often the cause of derailment with large economic losses and sometimes even those of human lives. This paper presents a failure analysis as well as that of the laminated-spring wagons' suspension improvement. The technique is based on specially designed rubber elastic elements which can be subsequently installed in the wagon suspension. This solution is the result of many years of research studies at the Railway Vehicles Centre of the Mechanical Engineering Faculty of Kraljevo in this field. The rubber elastic element is very easy to install in all the existing wagons, between the laminated-spring buckle and the underframe. The applied methodology is based on theoretical and experimental analysis of behaviour of the suspension with and without rubber elastic elements. Subsequent installation of rubber elastic elements can prevent very frequent fractures of laminated springs and cracks on the underframes. This provides for enormously reduced costs of wagon's maintenance as well as for an increased railway transportation efficiency.
Key words:
Improvement, Suspension, Wagon, Laminated Springs
POBOLJŠANJE SISTEMA OGIBLJENJA VAGONA SA GIBNJEVIMA
Tokom eksploatacije teretnih vagona sa gibnjevima uočen je veliki broj lomova na elementima sistema ogibljenja. Ovi lomovi smanjuju efikasnost transporta i veoma često dovode do iskliznuća vagona sa velikim ekonomskim gubicima, a ponekad i sa ljudskim žrtvama. Ovaj rad prikazuje analizu otkaza i poboljšanje sistema ogibljenja vagona sa gibnjevima. Tehnika je bazirana na primeni specijalno projektovanog gumenog elastičnog elementa koji se može naknadno ugraditi u postojeći sistem ogibljenja vagona. Ovo rešenje je rezultat višegodišnjih istraživanja Centra za železnička vozila Mašinskog fakulteta Kraljevo u ovoj oblasti. Gumeni elastični element se veoma lako može instalirati u sve postojeće vagone, između opasača gibnja i donjeg postolja. Primenjena metodologija bazirana je na teorijskoj i eksperimentalnoj analizi ponašanja sistema ogibljenja sa i bez gumenog elastičnog elementa. Naknadna ugradnja gumenog elastičnog elementa omogućava sprečavanje veoma čestih lomova gibnjeva i elemenata donjeg postolja. Ovo omogućava enormno smanjenje troškova održavanja vagona i povećanje efikasnosti železničkog transporta.
Ključne reči:
poboljšanje, ogibljenje, vagon, gibanj
