运用强度理论 ,建立了在偏载工况下大型推土机推土工作装置复杂超静定体系的计算模型 ,并以新型履带式推土机为例 ,给出了载荷工况和计算条件 ,分析计算了其推土工作装置顶推梁上不同截面位置危险点的应力分布 ,推导了计算公式 ,计算结果与顶推梁材质的屈服极限进行了对比 ,满足了强度要求 Based on the theory of strength, the calculation model of the complex statically indeterminate system of bulldozer bulldozer working under partial load condition is established. Taking the new crawler bulldozer as an example, the load conditions and calculation conditions are given, The stress distribution of the dangerous points in different sections of jacking girder is deduced, and the calculation formula is deduced. The calculated result is compared with the yield limit of the jacking girder material, which satisfies the strength requirement