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随着我国铁路事业的飞速发展,铁路线路上铺设的钢筋混凝土轨枕已占有相当大的数量。据有关部门统计,全路铺设的钢筋混凝土轨枕、轨枕板、整体道床的线路长度已占全路线路总延展长度的70％左右。钢筋混凝土轨枕硫磺锚固螺栓因锈蚀、弯曲、折断以及由钣式扣件换成弹条扣件时,因螺栓长度不够而必须更换螺栓。因此,寻找一种高效、经济、方便可行的拔出工艺,研制出相应的拔出机具是实现养路机械化的一项重要工作。
With the rapid development of the railway industry in our country, a great amount of reinforced concrete sleepers are laid on railway lines. According to the statistics of relevant departments, the length of the line of reinforced concrete sleepers, sleepers and integral road beds paved by the road has accounted for about 70% of the total extension of the entire line. Reinforced concrete sleepers Sulfur anchor bolts due to corrosion, bending, breaking and the sheet metal fasteners replaced by the elastic bar fasteners, because the bolt length is not enough and must be replaced bolts. Therefore, looking for an efficient, economical and convenient unplugging process, developing a corresponding pull out of equipment is an important task to achieve road maintenance mechanization.