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| Effect on the Scant Displacement of Switch Rail of High - speed Turnout by the Differential Motion Device |
| WANG Ping, MA Xiao -chuan, WANG Jian, XU Jing -mang |
| (MOE Key Laboratory of High - speed Railway Engineering , Southwest Jiaotong University , Chengdu , Sichuan 610031 , China) |
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Abstract Research purposes ： In order to research the effect of the differential motion device on the switching force and scant displacement of switch rail at high speed turnout, a model which could analyze the effect of differential motion device on the switching of high - speed turnout based on the finite element theory- The role of scant displacement adjustment of switch rail was analyzed. The variation of switching force and scant displacement was analyzed after the adjustment of scant displacement using the differential motion device.
Research conclusions ： (1) The effect of scant displacement adjustment using differential motion device is significant, the maximum scant displacement is decreased from 1. 64mm to 0. 49mm. (2) A total six switching process was calculated after the scant displacement adjustment of switch rail, and the scant displacement is not rebounded.After the adjustment of scant displacement, the switching force is decreased significantly for the alignment change of switch rail. (4) The adjustment effect method of scant displacement using the differential motion device is better compared with traditional methods. (5 ) The research of differential motion device can provide a good guidance for the adjustment of scant displacement in high - speed turnout.
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Received: 11 July 2015
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2015, Vol. 32 
