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解放前,我国铁路在各方面均不统一,道岔方面自然也不例外。以沈阳局为例,仅单开道岔即有5、6、7、8、9、10、11、12、15、16、24等11种。除单开外还有由派生的双开、交分、菱型交叉等道岔。轨型复杂,且每种轨型同一号码道岔又可分为“新型”、“旧型”、“战时型”、“暂定型”等等。据我们初步掌握材料,解放前沈局道岔达230种以上,平均每25组道岔即有一种类型。由于型类繁多,所以在相互衔接
Before the liberation, our country’s railway was not unified in all aspects, and the turnout naturally was no exception. In Shenyang Bureau, for example, only a single turnout that 5,6,7,8,9,10,11,12,15,16,24 and other 11 species. In addition to a single open, there are derived from the double open, pay points, diamond crossing and other turnouts. The railroad track is complex, and the turnout of the same number for each track type can be divided into “new type”, “old type”, “wartime type”, “tentative type” and the like. According to our preliminary grasp of materials, there were over 230 kinds of turnouts in the Shenbu Bureau before the liberation, and there was one type for every 25 turnouts. Due to the large variety, so in the interlinked