CAJ | 학술논문

基于弹性力学和接触力学的有关理论，对煤矿瓦斯抽放水平定向长钻孔千米钻机动力头的聚晶金刚石复合片钻头（PDC 钻头）压入切削岩石时的接触特性进行分析，通过计算机编程仿真得到钻机在实际运行过程中的负载并作为钻机动力头齿轮传动系统的外部激励；综合考虑钻机动力头齿轮传动系统中各个齿轮副的时变啮合刚度，各个齿轮副综合啮合误差等引起的内部激励；并考虑各个滚动轴承的支撑刚度以及轴的扭转刚度；采用集中参数法建立钻机动力头齿轮传动系统的耦合动力学模型，并基于数值分析方法求解得到钻机动力头切削砂岩时各个齿轮构件和轴承构件的振动速度响应、振动位移响应以及动态啮合力，对动力头齿轮传动系统的动态响应进行研究，研究结果为钻机动力头传动系统的动态性能优化奠定基础。
기우탄성역학화접촉역학적유관이론，대매광와사추방수평정향장찬공천미찬궤동력두적취정금강석복합편찬두（PDC 찬두）압입절삭암석시적접촉특성진행분석，통과계산궤편정방진득도찬궤재실제운행과정중적부재병작위찬궤동력두치륜전동계통적외부격려；종합고필찬궤동력두치륜전동계통중각개치륜부적시변교합강도，각개치륜부종합교합오차등인기적내부격려；병고필각개곤동축승적지탱강도이급축적뉴전강도；채용집중삼수법건립찬궤동력두치륜전동계통적우합동역학모형，병기우수치분석방법구해득도찬궤동력두절삭사암시각개치륜구건화축승구건적진동속도향응、진동위이향응이급동태교합력，대동력두치륜전동계통적동태향응진행연구，연구결과위찬궤동력두전동계통적동태성능우화전정기출。
A drilling rig's driving head transmission system was studied based on the gear system dynamics.The contact force of cutting rock with PDC bit was studied based on the theory of elastic mechanics and contact mechanics. The time-varying input torque of the gear transmission system of the drilling rig's driving head caused by varying working environment was then obtained.A coupled dynamic model of the gear transmission system was built using the lumped-parameter method,the model included time-vary mesh stiffness of gear pairs,stiffness of rolling element bearings, meshing error and etc.Then,the dynamic differential equations were built.The vibration responses,dynamic meshing forces of gears and bearing forces of the gear transmission system were computed using the numerical method.Research results laid a foundation for the dynamic performance optimization and the reliability design of gear transmission system of a drilling rig's driving head.