有轨电车6号道岔尖轨跟端形式对尖轨转换的影响分析

为研究有轨电车6号道岔尖轨跟端不同形式对尖轨转换计算的影响问题,基于变分形式的最小势能原理,建立尖轨转换的有限元仿真模型,研究了不同尖轨跟端形式对尖轨转换的影响规律。结论是不可更换尖轨平直接头焊接形式的尖轨跟端稳定性最好,但转换较困难;可更换尖轨带卡槽斜接头形式的尖轨,结构稳定性较好,但转换也较困难;可更换尖轨斜接头形式的尖轨,稳定性较差,但转换最容易。选用不同的尖轨跟端形式需配置不同功率的转辙机才能满足尖轨转换的要求。

Analysis on Switching Force Influenced by Different Forms of Rear End of Switch Rail of Turnout No.6 on Tramway Track

To ascertain the influence on switching force caused by different forms of rear end of switchrail of turnout No.6 on tramway track,this paper established a finite element simulation model of the switch rail based on minimum potential energy principle,and researched the influence on switching force caused by different forms of rear end of switch rail.Then this paper come to the conclusions:( a) by contrast,the switch rail,which is with the rear end in the form of non-replaceable welded straight connector,has the best stability but is not easy to be switched;( b) the switch rail,which is with the rear end in the form of replaceable oblique grooved connector,has a better stability but is also not easy to be switched;( c) the switch rail,which is with the rear end in the form of replaceable oblique connector,has a worse stability but is most easy to be switched.Finally,it is suggested in this paper that different forms of rear end of switch rail should be matched with different powers of switching machine,so as to meet the switching force requirement of switch rail.