1前言柴油发电机组是内燃机车的核心部件,在解体、检修、组装、试验以及装车各环节中,需要多次使用吊具进行起吊作业。由于柴油发电机组具有体重大且重量分布不均匀的特点,就要求吊具中两组钢丝绳的长度有一定的差值。具体来说,两组钢丝绳在纵、横支撑杆下方的长度是完全一样的,但在支撑杆以上部分的长度是不同的(具体长度差因柴油机型号而异),这样才能保证柴油机组被吊起后,柴油机组本身以及吊具的支撑杆部分能够处于 1 Introduction Diesel generator sets are the core components of diesel locomotives. During dismantling, overhauling, assembly, testing and loading of various links, it is necessary to use spreaders for lifting operations for many times. Due to the large weight and uneven weight distribution of diesel generating units, it is required that the length of the two groups of slings in the spreader should have a certain difference. Specifically, the length of the two groups of ropes under the longitudinal and transverse support rods is exactly the same, but the length of the part above the support rods is different (the specific length difference varies with the diesel model), so as to ensure that the diesel generator is suspended Since then, the diesel engine itself and the spreader can be part of the support rod