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1 前言将钢轨和轨枕钉联连的轨排,铺设在路基上的专用起重机称为铺轨机;将跨度在40m以内的混凝土梁片,架设在桥墩上的专用起重机称为架桥机;以铺轨为主,兼做架桥的机型称为铺架机。PG30型铺架机是大秦线铁路施工中,为解决铺设宽轨枕轨排及架设16m混凝土梁片,由我所及有关单位研制的新产品。于1987年投入大秦线进行工业性试验,其外形如图1。
1 Foreword The rails connecting the rails and sleeper nails are special cranes laid on the roadbed called track-laying machines; concrete beams spanning within 40m, special cranes erected on the bridge piers are called bridge-laying machines; Mainly, the model that also serves as a bridge is called a paving machine. PG30 paving machine is a new product developed by our institute and related units to solve the problem of paving wide rail sleeper rails and erecting 16m concrete beams during the construction of Daqin Railway. In 1987, the Daqin Line was put into industrial trials and its appearance was shown in Figure 1.