货车上采用薄钢板波型结构以后,原来的端柱没有了,这在强度上是合理的,但是鼓出弯损了的车辆经定期和日常检查处理后,仍要到修车库修理。这种车辆有时要占全部修理车辆的10％以上。这些车辆过去的修理方法是:牵拉作业是在不稳定的状态下操作链滑轮和钢丝绳,顶压作业是用油压千斤顶,并且需要具有端柱的90000型车作为油压千斤顶的支承用。近年来该型车越来越少,因而增加了修车作业的困难和不安全。本研究的目的是,不使用其他车辆,排除在不稳定的状态下挂钢丝绳及操作链滑 The use of thin steel plate wave structure on the truck after the original column is gone, which is reasonable in strength, but bulging out of the vehicle after regular and routine inspection and treatment, still have to repair the garage repair. Such vehicles sometimes account for more than 10% of all repaired vehicles. These vehicles used to be repaired in the past by pulling the chains and wire ropes under unstable conditions, pressing the jacks with hydraulic jacks, and requiring the 90000 with the studs to support the hydraulic jacks. In recent years, fewer and fewer types of vehicles, thus increasing the difficulty of repairing vehicles and insecurity. The purpose of this study is not to use other vehicles, to exclude the unstable state of wire rope hanging and operating chain