- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | SI Daolin, WANG Meng, WANG Shuguo, WANG Pu. Mechanism of Anti-derailment Equipment for No. 6 Symmetric Turnout[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 261-266. doi: 10.3969/j.issn.0258-2724.20200298
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To prevent derailment in No. 6 symmetric turnouts, a vehicle-turnout dynamic model is built on the basis of the structural characteristics of the guard rail in front of the turnout and the working principle of a new anti-derailment equipment in turnouts. Through the vehicle-turnout coupling model, the influences of the guard rail and preventing derailment structure on dynamic responses of the turnout are simulated and discussed. The results show that both the guard rail and the new anti-derailment equipment can effectively constrain the lateral shift of the wheelset when negotiating the turnout, and change the wheelset trajectory, making the wheel flange contact switch rail at 0.493 and 0.705 m away from the switch rail toe, respectively, and preventing the wheel flange from contacting the switch rail toe. Thus, the adverse contact status between wheel flange and switch rail toe can be avoided, and the safety of turnout negotiation is improved significantly. When there are guard rails installed on both sides of the track, the increased wheel flangeway width will cause the guard rail to reduce its restraint effect on the wheelset and lose its protective function. The new anti-derailment equipment extends into the turnout and can be installed symmetrically on both sides of the track, which ensures the driving safety in both directions of the symmetrical turnout and effectively avoids derailment occurrences in the No. 6 symmetrical turnout area.
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