1问题的提出1993年上半年，济南西机务段发生了一起由于线路原因造成的东风s型机车脱线事故。在事故机车救援过程中，吊起机车后起吊转向架的钢丝绳滑脱，致使机车车体与转向架分离后转向架摔落在地面上，牵引杆和拐臂扭曲变形，轴箱弹簧脱出，给救援工作造成了极大困难，同时 1 Proposed Issues In the first half of 1993, an accident occurred in the southeastern s-locomotive in Jinan along the southeastern line of locomotive caused by the route. During the accident locomotive rescue process, the wire rope lifting the bogie after lifting the locomotive slipped off, causing the bogie to fall onto the ground after the locomotive body and the bogie separated, the distraction and deformation of the traction rod and the crank arm, the relief of the axle box spring, Work caused great difficulties, at the same time