车辆制动事故多数发生在三通阀部分,因此,三通阀的检修和试验应特别给予重视。由于当前新工人多,不熟悉工艺规程,在检修三通网故障时,随意处理,不考虑保持三通阀的原设计和制造标准,虽把眼前的故障处理好了,却破坏了三通阀的原设计性能。这样,就难以保证三通阀装车后,整列车辆 Most of the vehicle brake accident occurred in the three-way valve part, therefore, three-way valve overhaul and test should pay special attention. Due to the current number of new workers, are not familiar with the process rules, troubleshooting in the three links, casual handling, regardless of the original design and manufacture of three-way valve to maintain standards, although the immediate fault handling well, but destroyed the three-way valve The original design performance. In this way, it is difficult to ensure the three-way valve loaded, the entire train