介绍履带式液压挖掘机驱动轮连接螺栓断裂的原因,其中包括螺栓强度过高、螺栓强度不足、螺栓安装面倾斜、螺栓安装面刚性不足等,对螺栓拧紧力矩进行理论计算和分析,给出拧紧力矩的具体数值,经市场验证表明,分析正确,效果良好。 This paper introduces the causes of the breakage of connecting bolts on the driving wheel of crawler hydraulic excavator, including the high strength of bolt, the insufficient strength of bolt, the inclination of bolt installation surface and the lack of rigidity of bolt mounting surface. Theoretical calculation and analysis of bolt tightening torque are given, The specific value of torque, the market test shows that the analysis is correct, the effect is good.