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摆动式液压油缸在建筑机械上应用相当普遍,安装方法基本是螺纹连接式和铰轴连接式,常常采用后种形式。但铰轴根部的断裂现象时有发生,如a图所示。下面对此进行简略分析,并从设计计算上提出一些改进措施。一、断裂原因从断裂面的情况看,呈光滑形,属于典型的疲劳破坏。建筑机械上使用的液压油缸受力特点是:荷载大,且一般都是重复荷载,作用时间
Oscillating hydraulic oil cylinders are widely used in construction machinery. The installation method is basically threaded connection and hinged shaft connection, often using the latter type. However, the fracture of the hinge shaft occurs from time to time, as shown in a. The following is a brief analysis of this, and some improvements are proposed from the design calculations. First, the cause of the fracture From the perspective of the fracture surface, was smooth, is a typical fatigue damage. Hydraulic cylinders used in construction machinery are characterized by large loads, and are generally repetitive loads.