The Effects of Oblique Running and Ideal Motion on Stress Analysis of Bridge Crane Wheels

Abstract

In this study, the effects of oblique running and ideal motion on the stresses of bridge crane wheels were examined. The stresses on the crane wheels were calculated using the rotation angles and the forces. The commercial finite element package I-DEAS was used for the solution of the problem. The technical values of two double girder bridge cranes with 32 and 50ton carrying capacities and 18m crane span were used. Finally, the stresses caused by the oblique running were compared with the ideal motion. The numerical results show that the stress values increase by the oblique running.

Using a Wheel Pair With a Counter-Flange to Prevent Derailment

“…According to the literature [see, for example, 4 -6, 8 -10], finding ways to reduce the number of derailment events is the key task of wheel-rail interaction research. Basic derailment scenarios include derailment due to wheeling onto the rail and track thrusting, when the railhead is pressed out by one wheel flange due to its spring decline and the other wheel falls off the other rail [1,2,11,15].Consequently, we need to create such elements of trucks (or a wheel-rail system) that provide movement stability, exclude the possibility of a wheel-flange rolling onto the railhead and counteract derailment in the situation of spring rail deflection [3 -7, 12, 13].The issue can be solved by introducing counter-flange wheels, which have been used successfully and with steady performance, such as in bridge cranes [16,17]. Unlike bridge cranes, however, rail transportation presents its own unique challenges to using counter-flange wheels: that of passing track switches and other track devices, which constitute an obstacle for passing of the second wheel flange.To mitigate this, we need to create a wheel where the top of the second flange is higher than its rolling surface [6].…”

“…The issue can be solved by introducing counter-flange wheels, which have been used successfully and with steady performance, such as in bridge cranes [16,17]. Unlike bridge cranes, however, rail transportation presents its own unique challenges to using counter-flange wheels: that of passing track switches and other track devices, which constitute an obstacle for passing of the second wheel flange.…”