石油钻机提升系统在起下钻过程中承受的实际载荷相对于时间历程的变化曲线称为载荷谱。过去,钻机的设计和操作人员对此了解很少,从而在设计过程中不能正确认识动载和选用动载系数,不能正确计算出各起升挡的换挡载荷。至于单滑轮效率和游动系统效率值,由于缺乏我国自己的数据,因而也只能盲目抄用外国的。这些问题都迫切要求对钻机提升系统 Oil rig lifting system in the drilling process to withstand the actual load versus time course curve called the load spectrum. In the past, drilling rig designers and operators had little understanding of this, so that during the design process, the dynamic load and the dynamic load factor can not be correctly understood, and the shift loads of each up-shift can not be correctly calculated. As for the efficiency of single-pulley and swimming-system efficiency, due to the lack of our own data, we can only blindly copy foreign countries. These problems urgently require a rig upgrade system