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京广线郑州至武昌间部分客货机车安装由法国引进的TVM-300机车信号设备(与UM71无绝缘轨道电路统称U-T系统),是促进我国铁路现代化建设的一个重要举措,但自1990年试安装以来,工程进度缓慢,使用效果欠佳,这些情况的出现,除受到一些特定因素的制约外,也暴露了设计方面的不足。为此,初步探讨设计存在的问题,找出合理的完善措施,力求对该项设备的装修管用工作有所帮助。一、设计方案消弱了确保行车安全的功能 TVM-300机车信号设备,是一种速差式机车信号,具有速度监督功能,该设备在法国采用失电制动方式构成闭环故障
The installation of TVM-300 locomotive signal equipment imported from France (together with UM71 uninsulated track circuit, also referred to as the UT system) for installation of some passenger and freight locomotives between Zhengzhou and Wuchang in the Beijing-Guangzhou line is an important measure to promote the modernization of China’s railways. However, since the 1990 trial Since the installation, the construction progress is slow, and the use effect is not good. The appearance of these situations has not only been exposed by some specific factors, but also exposed the design deficiencies. To this end, preliminary discussion of the design problems, find reasonable measures to improve, and strive to decorate the work of this equipment is helpful. First, the design has weakened the function to ensure traffic safety TVM-300 locomotive signal equipment, is a speed difference locomotive signal with speed monitoring function, the device in France with loss of power to form a closed-loop braking failure