The embodiment of the invention provides a subway train. The subway train comprises a vehicle unit. The vehicle unit comprises a plurality of vehicles, and each vehicle is provided with a traction system backflow busbar; the vehicle body safety grounding system is used for grounding metal vehicle bodies of the vehicles of the vehicle unit and wheel pairs of the bogie, and the metal vehicle bodies of the vehicles of the vehicle unit are connected; two ends of the vehicle body resistor are respectively connected with the traction system backflow busbar and the metal vehicle body corresponding to the vehicle body resistor; one busbar working grounding lead corresponds to the metal vehicle body without the vehicle body resistor in one vehicle unit, and the busbar working grounding lead is connected with the traction system backflow busbar and the metal vehicle body corresponding to the busbar working grounding lead; the mixed grounding lead is connected with the traction system backflow busbar and the wheel pair of the bogie; wherein the track is reused as a working grounding conductor of the traction system. According to the embodiment of the invention, the technical problem of insufficient grounding stability caused by the combined design of working grounding and protective grounding of a traditional subway train is solved.
本申请实施例提供了一种地铁列车,包括车辆单元;车辆单元包括:多个车辆,车辆具有牵引系统回流母排;车体安全接地系统将车辆单元的各个车辆的金属车体和转向架的轮对接地连接,车辆单元的各个车辆的金属车体连接;车体电阻的两端分别连接牵引系统回流母排和车体电阻对应的金属车体;母排工作接地导线,一个母排工作接地导线对应一个车辆单元中未设置车体电阻的金属车体,母排工作接地导线连接牵引系统回流母排和母排工作接地导线对应的金属车体;混合接地导线,连接牵引系统回流母排和转向架的轮对;其中,轨道复用为牵引系统工作接地导体。本申请实施例解决了传统的地铁列车的工作接地与保护性接地的合并设计导致接地的稳定性不足的技术问题。
Subway train
一种地铁列车
2022-12-30
Patent
Electronic Resource
Chinese
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