Study on door system sealing of serialized China standard metro train

The sealing performance of the vehicle is the key factor affecting the comfort experience of passengers, and the sealing performance of the door system directly determines the sealing performance of the vehicle. Therefore, it is of great significance to improve the sealing performance of the door. The factors affecting the sealing performance of the vehicle were analyzed, such as the blocking ratio and the running speed of the vehicle, and the improvement of the sealing performance of the sliding plug door system was studied combined with the comfort evaluation standard. The method to optimize the sealing performance of the door system by adding restraint limit and improving the rubber strip section was proposed, which was verified by bench pressure charging test. The results show that the sealing performance of the door system can be significantly improved by adding constraints and pneumatic pressure locking at the lower part of the door leaf, and the asymmetric finger protection rubber strip with reverse lip edge also has a certain effect on improving the tightness of the door system, which provides guidance and suggestions for the sealing structure design of door system of serialized China standard metro train.