中文摘要：

随着油田开发的不断深入,长冲程、低冲次电机换向抽油机的需求日趋增加,厂家研制、生产电机换向抽油机的热情空前高涨。作为电机换向抽油机的核心部件——滚筒,其布局和结构的合理性对于提升整机性能及其可靠性具有重要意义。本文从选型与结构设计两方面出发,对电机换向抽油机滚筒的常见布置方式与结构形式进行分类,分析减速系统与滚筒的一体式和分体式两种布局方式的合理性,给出摩擦式驱动和死绳驱动两种滚筒结构的受力分析。结果表明：减速系统与滚筒采用分体式时装配方便、电机减速器散热可靠;死绳式滚筒驱动结构更适用于电机换向抽油机;滚筒与滚筒轴的连接采用两端固定可大大降低滚筒的变形,避免轴上零件的损坏;指出了柔性驱动件与滚筒连接、滚筒驱动槽设计时需注意的问题。本文研究的成果对于提升电机换向抽油机的整体设计水平有很大帮助。

英文摘要：

With the thorough of the oilfield production development, the increasing demand of motor-reversing type pumping units with long stroke and low strokes. The polytype of motorreversing type pumping units are developed and manufactured. The drum is considered to main component of this kind of pumping units. The rationality of structure layout make highly significant to the improvement of overall performance. In this paper, the common layout and structure forms of drum on motor-reversing type pumping units were classified and analyzed from the aspects of mechanical structure selection and design. Firstly, the assemble rationality of drum and deceleration system layout with integrated style and split type is analyzed. Then stress analysis of the drum that driven by friction and dead line is given. The results show that deceleration system and drum assembled by split type would be more convenient and more reliable in heat dissipation of motor reducer. The driven structure with dead line is more suitable for motor-reversing type pumping unit. The connection with both fixed points between drum and drum shaft could reduce drum deformation greatly and avoid the damage of parts on the shaft.This paper also pointed out some problems about connection between flexible driving parts and drum and the design of drum wheel hub. The conclusions of this paper can be used to improve overall design level of motor-reversing type pumping units.