钢筋混凝土轨枕在我国铁路上已经使用多年,使用证明,这不仅提高了线路质量,而且节约木材,但在桥梁上因有护轨特别是梭头部分为一曲线,普通轨枕不能使用,但一直还没有相应的钢筋混凝土桥枕。我们在对我厂产品进行回访调查的过程中,了解到工务部门很需这一产品。 1977年开始,有些单位在69型普通钢筋混凝土轨枕上,用人力或风动工具打钻锚固螺栓 Reinforced concrete sleepers have been used on railway for many years in our country. Proof of using this not only improves the quality of the circuit but also saves the wood, but the conventional rail sleepers can not be used because of the curve of the retaining rail, especially the shuttle head on the bridge. There is no corresponding reinforced concrete bridge. During our return visit to our factory, we learned that the public works department is in need of this product. Beginning in 1977, some units drilled anchor bolts on 69-type ordinary steel-concrete sleepers using either manual or pneumatic tools