摘  要
石油钻机是油田油气勘探开发极其重要的工具。石油钻机一般由旋转设备、循环系统设备、起升系统设备、动力驱动设备、传动系统设备、控制系统设备、钻机底座和辅助设备组成。绞车是石油钻机速度变化及维持外头恒定钻压的重要机构，是钻机的核心部件，直接决定着钻机钻进能力。传统机械传动绞车体积大、质量重、结构复杂，很难较好地满足新型钻井工艺的要求。ZJ50 绞车传动简单，结构紧凑，功率大且利用率高，调速性能好，安全可靠。
本文在对ZJ50型绞车的整体结构及工作原理认真研究的基础上，运用Pro/E对ZJ50绞车传动系统的所有组成元件进行三维建模；并对滚筒、滚筒轴等重要部件进行安全校核；最后运用ANSYS对滚筒、滚筒轴和滚筒轴装配体进行有限元分析，根据分析结果判断ZJ50型绞车设计是否合理，能否满足正常工作要求。ZJ50型绞车传动系统的设计优化为绞车发展提供理论参考，具有一定的工程应用价值。
关键词：绞车传动系统，Pro/E，滚筒和滚筒轴，ANSYS，静态和模态分析
Abstract
Oil drilling rig is a very important tool in exploration and development of oil and gas. Oil drilling rig generally consists of Rotating equipment, recycling equipment, lifting equipment, power equipment, transmission equipment, control systems and equipment, drilling rig substructure and auxiliary equipment. The winch is an important mechanism of drill speed changes in oil and maintains constant drilling pressure and is also a core component of a drilling rig, directly determining the drilling ability. Traditional mechanical draw works bulky, heavy, complicated construction, so it is difficult to satisfy the requirement of new drilling technology.ZJ50 winch is simple, compact structure, large power and high utilization rate, good speed performance, safe and reliable.
Base on the study of the overall structure and working principle of ZJ50 winch, we make three-dimensional modeling of components of transmission system by Pro/E. And then check the safety of drum, drum shaft and other important components. Last, finite element analysis on the drum, drum shaft and drum shaft assembly by ANSYS. From the results of the verification ，we know that the design of ZJ50 winch is reasonable, and it can meet the normal requirements. The optimization of ZJ50 transmission system provides a theoretical reference for the winch development, and has certain engineering application value.
Key Words: Winch transmission system, Pro/E, Roller and roller shaft, ANSYS, The static and modal analysis
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