新型吊卡翻转机构的优化设计和研究

The Optimization Design and Research of Flip Mechanism of New-Type Elevator

修井作业中,新型吊卡的作用是从猫道口拾取油管并将油管送至井口。在吊卡拾取油管之前需翻转一定角度便于抓取。翻转机构是新型吊卡的重要组成部分,为了对翻转机构进行设计和研究,根据建立的力学模型,从翻转机构液压驱动系统设计出发,选用吊卡结构安装位置为优化设计变量,以驱动力在翻转过程中最大值最小为优化目标函数,借助MATLAB计算得到优化结果,并用Adams进行仿真验证,证明力学优化结果的正确性。同时在已知吊卡翻转运动特性的基础上,建立运动学模型,对吊卡进行运动学分析,推导出液压系统的输出速度与时间关系。Adams中输入得到的函数关系进行仿真,得到的仿真结果与给定运动特性相符,论证运动学分析的正确性。

In work-over, operation, picking up the tubing from catwalk and sending it to oil wellhead are the functions of new elevator, but before this, the elevator should be turned a certain point to catch accurately. Flip mechanism is an important aspect of automatic elevator. In order to design and research the mechanism, according to the dynamic model built in SOLIDWORKS, beginning with the design of hydraulic system, the article took installation position of the hydraulic system as a design variable, and regarded the lowest value in the maximum values of driving force as objective function, and the best result was calculated by MATLAB. Adams proved the result through simulation. Meanwhile, on the basis of known the motion characteristics of elevator, the paper built motion model, analyzed the motion of elevator, and deduced functional relation between velocity and time. The simulation result came out by typing in the motion function in Adams, which conforms to the original demand, so it demonstrates correctness of the analysis.