浅谈大同站改造特殊过渡施工
2018-09-05缪红明
缪红明
【摘 要】针对大型枢纽车站大同站站场改造,信号专业同步实施微机联锁改造工程。其中既有站设备为6502电气集中,室外直流电动转辙机,改造后室外为三相交流液压转辙机。通过和几个成熟信号施工过渡方案比对,设计出最合理方案,即采用交流液压转辙机过渡代替其他方案, 以实现较大枢纽车站短时间高难度改造,达到信号施工过渡安全、优质、高效、经济的目的。
【Abstract】In view of the station reconstruction of Datong station, which is a large hub station, the signal specialty synchronously implements the microcomputer interlocking reconstruction project. The existing station equipment are 6502 electric centralization and outdoor DC electric switch machine, and after transformation the outdoor hydraulic switch machine is three phase AC. Through comparing with several mature signal construction transition schemes, the most reasonable scheme is designed, that is, alternating current hydraulic switch machine is used to replace other schemes, so as to realize the short time and high difficulty transformation of the larger hub station, the purpose of safety, high quality, high efficiency and economy of signal construction transition can be achieved.
【关键词】信号;过渡方案;转辙机
【Keywords】 signal; transition scheme; switch machine
【中图分类号】U291 【文献标志码】A 【文章编号】1673-1069(2018)05-0171-03
1 引言
既有线改造信号施工要求在不影响列车安全运行的前提下实施,由于受到许多客观条件的限制,新的站场设备不能直接安装到位,就需要制定详细周密的施工方法和步骤;修改部分联锁电路,逐步将既有设备过渡到新的站场设备,最后完成新旧站场信号设备的安全更替。其中过渡工程,尽量做到低费用小规模。站场改造施工方案要反复推敲逐步完善。本文以信号施工方案达到安全、简洁、经济、易于实现为目标,设计制定大同站站场信号改造直流电动轉辙机改交流液压转辙机过渡方案。方案安全实施,设计预期效果。
2 大同站站场改造概况和遇到的难题
大同站南部咽喉和北部咽喉原位更换到期道岔59组,北部咽喉取消原车辆整备场和简易驼峰调车场,取消10组交分道岔,插铺道岔79组,接触网同步实施改造。既有大同站整备场和车站分两个信号机械室控制,设备为6502大站电气集中制式,轨道电路为25Hz叠加移频,转辙机为ZD6型。……
