Multi-body dynamics analysis for the wear of front-rod bearing during the switching operation of railroad switches (Effect of adjustment condition)

Since the wear of front-rod bearings railroad switches induce switch failure, evaluation is indispensable. On other hand, various parts are adjusted so as to avoid derailment. For example, attachment position adjustment nut adjuster rod could enlarge contact force between tongue rail and stock rail. The extension front also used eliminate gap toe In this paper, bearing during switching operation estimated by multi-body dynamics simulation. effects evaluated. When moves rightward, driving electric point machine transmitted through rod. Then, right bracket which connects Although controls rail, that does not change path transmission acting on bearing. Therefore, affect wear. changes transmission. most left bracket, in order. increase increases its case 6 mm rod, amount 3.44 μm, 3 times larger than no extension.