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用于有轨道电路区段、安装在闭塞分区两端的钢轨接头,不仅要具有良好的绝缘性能,而且要有足够的机械强度,以承受机车车辆带来的各种作用力,及铁路采用无缝线路后带来的巨大纵向温度力,旧式钢轨绝缘由于在构造上、设计上存在一些很难解决的问题,成为轨道的薄弱环节,由此引起的故障影响行车安全的事故时有发生,所以需要经常更换。 研究采用胶接钢轨绝缘接头,是世界各先进国家钢轨绝缘发展的总趋势。国内虽在70年代曾着手研究过,终因一些关键技术未完全突破而没有推广。
For rail circuit section, the rail joints installed at both ends of the blocking section must not only have good insulation properties, but also have enough mechanical strength to withstand the various forces caused by the rolling stock and the seamless use of the railway After the line caused by the huge longitudinal temperature force, the old rail insulation in the structure, there are some difficult to solve the problem of design, become the track of the weak link, the resulting failure of traffic safety accidents have occurred, so Need to be replaced frequently. Study using adhesive rail insulation joints, the world’s advanced rail insulation in all countries the development trend. Although in the 1970s China started to study it, it eventually failed to promote some key technologies without complete breakthrough.