宣化工程机械厂履带推土机研究所在“试析履带张紧油缸的变形原因”一文(见《工程机械》1979,10)中指出:油缸变形是在65吨压力下发生的,此力为推土机重量的四倍。至于如此大的外力是怎样产生的?文章认为是驱动轮轮齿和履带销套之间卡入较大坚硬障碍物所致。我认为此结论尚有进一步探讨的必要。我们通过工地调查,并在推土机整机工业性试验中长期观察,甚至将一些石块倾放在履带与驱动轮之间,都没有出现这种卡入现象。诚然,作为油缸损坏的一种特例是不能一概否定的。可是在T120之后TS120湿地推土机又 Xuanhua Engineering Machinery Co., Ltd. crawler bulldozer Institute “in the analysis of the reasons for the deformation of the track tensioning cylinder” (see “Construction Machinery” 1979,10) pointed out: The cylinder deformation occurs under a pressure of 65 tons, this force is the weight of the bulldozer Four times. As for how such a large external force is generated, the article believes that it is caused by the insertion of large hard obstacles between the driving wheel teeth and the track pin bushing. I think this conclusion still needs further exploration. We did not see this kind of stuck-in phenomenon through field surveys and long-term observations in bulldozers’ industrial tests, even when some stones were dumped between the track and the drive wheels. Admittedly, as a special case of damage to the cylinder, it cannot be denied. But after the T120, the TS120 wetland bulldozer