文章介绍获得1989年全苏铁路工务部门生产作业机械化优秀项目竞赛奖的一种线路机械。铺设钢筋混凝土轨枕的无缝线路进行大修时,需要锯断长钢轨,一般使用气割,钢轨端头因此受到损伤而不能立即铺设使用。文中介绍的自行式锯轨及钴孔机避免了以往各种机械的缺点,它在线路大修时以等速走行在线路拆 This article introduces a line machinery that won the 1989 National Excellent Engineering Competition for Production Work Mechanization in the All-Soviet Railway Engineering Department. Laying reinforced concrete sleepers seamless line for overhaul, you need to cut long rails, the general use of gas cutting, rail ends so damaged and can not be used immediately. The article describes the self-propelled sawbolt and cobalt hole machine to avoid the shortcomings of the past, all kinds of machinery in the line overhaul to run at constant speed in the line demolition