According to four- bar linkage theory, the track of crane jib head is analyzed, and some practical and simple methods for designing the crane jib and their related calculation formulas are presented.

• 根据四连杆机构综合理论,对起重机械起重臂的端头轨迹进行分析,介绍了几种工程设计中可应用的简易设计方法,并给出了相应的计算公式。