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修井机的幅值域分析在修井机载荷谱的研究中，占有重要的地位。文中对８００ｋＮ修井机６种工况（起升４种，下钻两种）下的实测载荷历程、５００ｋＮ修井机２４种工况（起升２０种，下钻４种）的实测载荷历程分别进行幅值域分析，获得了载荷幅值与均值的统计特性参数，并求得各种工况下两者的联合概率密度函数。这对修井机关键零部件的疲劳分析是十分有益的
Workover machine amplitude domain analysis in the workover machine load spectrum study, occupy an important position. In this paper, the actual load history of 800kN workover rig in 6 conditions (4 kinds of jacking, 2 kinds of jacking), the actual load history of 24 working conditions of 500kN workover rig (20 kinds of jacking and 4 kinds of dowels) The amplitude domain analysis is carried out respectively, and the statistical property parameters of load amplitude and mean value are obtained, and the joint probability density function of the two under various conditions is obtained. This fatigue analysis of the key components of workover rigs is very useful