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空气制动切除操作是CRH2A型动车组途中应急处置的基本操作之一,主要是在动车组在运行途中发生抱死、制动不缓解、制动控制装置等故障时,对故障车厢进行空气制动切除操作能快速、有效地对相关故障进行应急处理。但在实际运用过程中,对车厢进行空气制动切除操作,车辆恢复运行后,有时会引起其他故障的发生,如牵引变流器004故障、制动力不足123故障等。针对CRH2A型动车组进行空气制动切除操作时其存在的问题进行优化建议。
Air brake removal operation is one of the basic operations of the CRH2A EMU on the way to emergency treatment. It is mainly used in the air system of the fault compartment when the EMU is locked in operation, the brake is not relieved, and the brake control device is faulty Dynamic removal operation can quickly and effectively deal with the related emergency. However, during practical application, the air brake removal operation is performed on the carriage body. After the vehicle is restored to operation, other faults may sometimes occur, such as the fault of the traction converter 004, the braking force of less than 123 and so on. Aiming at the problems existed in air brake cutting operation of CRH2A type EMUs, the optimization problems are suggested.