装载机作业中,前桥壳突然断裂是最重大的机械事故,它几乎导致前桥全部零件损坏。本文将分析其断裂原因及解决办法。1 原因本厂断裂的前桥壳其桥荷全部都是190kN以上的,其断裂位置无规律可循,在轮边支承轴(以下简称支轴)处和桥壳部分断裂的都有,前者的比例略高。桥壳突然断裂虽与工况及载荷突变有关,但主要原因还是材质问题。从断面情况来看,组织十分粗大,金相 Loader operation, the sudden fracture of the front axle housing is the most significant mechanical accident, which led to almost all parts of the front axle damage. This article will analyze the causes of fracture and solutions. 1 The reason for the failure of the bridge axle bridge its bridge load all over 190kN, and its fracture location without law to follow, in the wheel-side support shaft (hereinafter referred to as support shaft) and the bridge shell part of the fracture there, the former The ratio is slightly higher. Although the sudden breakage of the axle housing is related to the change of working conditions and load, the main reason is the material problem. From the cross-section situation, the organization is very thick, metallurgical