提出六杆式双游梁长冲程抽油机的设计方案,并介绍该种机型的结构原理和尺寸优化设计的原则与方法。分析表明,该种机型的运动、动力性能指标优于目前广泛使用的四杆式游梁抽油机,而其重量指标则有明显下降。 Proposed a six-rod double-beam long-stroke pumping unit design, and describes the structure of the type of principle and size optimization design principles and methods. The analysis shows that the kinematic and dynamic performance indexes of the model are better than the four-bar beam pumping unit which is widely used at present, and its weight index obviously drops.