【摘要】 对曲柄摆轮式无游梁抽油机的性能、型式等方面进行了分析，其运动、动力性能与有游梁抽油机相当，而尺寸及重量指标均有较大的降低，是发展长冲程抽油机的一种可选机型，并对设计中的有关问题，如支架高度、后摆轮变径等问题进行了讨论．更多还原

【Abstract】 This paper analyzes the characteristics and the types of crank-swing wheelpumping units without beam. Its kinetics is close to the beam pumping units,but thedimension and weight are reduced.So that.this is a desirable type for the use of long-strokepumping units.This paper discusses some problems of height of the support and variantdiameter of rear swing wheel,更多还原