美国克绍公司制造了一种换轨吊车(图1),适于换轨和整修钢轨使用。车上除有一台用以起吊钢轨的一吨悬臂吊外,还配备有锯轨、钻孔、切割、紧螺栓、钉道钉等全套钉道和整修钢轨的机动(液压)工具。动力是一台130制动马力(2,800转/分)的引擎。车行速度每小时40公里。作业效率每更换一根钢轨需时15～20分钟(图2)。车内有供6人工班乘坐的司机室,有蓄放鱼尾鈑、螺栓、道钉等的材料箱。还附有两台转向架式小平板车(图3), Kesha company in the United States to create a track crane (Figure 1), suitable for rail and rail repair. In addition to a one-ton cantilever crane for lifting rails, the car is equipped with maneuvering (hydraulics) tools such as full set of pinholes and rails for sawing, drilling, cutting, tightening bolts and tacks. Power is a 130 hp (2,800 rpms) engine. Driving speed 40 kilometers per hour. Work efficiency for each replacement of a rail takes 15 to 20 minutes (Figure 2). The car has 6 artificial classes for the driver’s cab, there are storage fish sheets, bolts, spikes and other material boxes. There are also two bogies attached to the scooter (Figure 3)