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1971年以来,沈阳桥梁厂开始批量生产YD-2轻型液压捣固车(图1)。其中部分运坦赞铁路使用,部分正在国内新线建设和旧线大修工程中运用。在发展捣固车的同时,最近又出现了作用原理相同的单缸液压捣固车和小型液压捣固机。前者已生产了几台样机,并决定批量投产;后者也已生产一批,正在几个铁路局的营业线路上使用,一俟定型,即拟批量
Since 1971, the Shenyang Bridge Factory began mass production of the YD-2 light hydraulic tamping truck (Figure 1). Some of them are transported to the Tanzanian railroad and some are being used in the construction of new domestic lines and overhaul of old lines. In parallel with the development of tamping trucks, the recent emergence of single-cylinder hydraulic tamping trucks with the same principle of action and small hydraulic tamping machines. The former has produced several prototypes and has decided to put into mass production; the latter has also produced a number of railways are in use on the business lines, once the stereotypes, namely the proposed batch