Kinematic Analysis of Long Stroke Pumping Unit with Post Pulley

Sun Wenbin; Zhou Sizhu; Wu Bangxiong; Lü Zhipeng

doi:10.16578/j.issn.1004.2539.2017.08.007

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Kinematic Analysis of Long Stroke Pumping Unit with Post Pulley

更新时间：2022-10-20

- Kinematic Analysis of Long Stroke Pumping Unit with Post Pulley
- Vol. 41, Issue 8, Pages: 34-38(2017)
- 作者机构：
  
  1. 长江大学机械结构强度与振动研究所
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2017.08.007
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[1]孙文斌,周思柱,吴帮雄,吕志鹏.一种后置滑轮式长冲程抽油机的运动分析[J].机械传动,2017,41(08):34-38.

Sun Wenbin, Zhou Sizhu, Wu Bangxiong, et al. Kinematic Analysis of Long Stroke Pumping Unit with Post Pulley. [J]. 41(8):34-38(2017)
[1]孙文斌,周思柱,吴帮雄,吕志鹏.一种后置滑轮式长冲程抽油机的运动分析[J].机械传动,2017,41(08):34-38. DOI： 10.16578/j.issn.1004.2539.2017.08.007.

Sun Wenbin, Zhou Sizhu, Wu Bangxiong, et al. Kinematic Analysis of Long Stroke Pumping Unit with Post Pulley. [J]. 41(8):34-38(2017) DOI： 10.16578/j.issn.1004.2539.2017.08.007.

摘要

针对常规游梁式抽油机存在曲柄转矩和悬点载荷峰值大、冲程短、钢丝绳磨损严重的缺点,在常规游梁式抽油机结构特点基础上设计了随悬点位移变化且对平衡力臂进行调节的后置滑轮式长冲程抽油机。采用钢带代替传统的钢丝绳固定在后置滑轮上,后置滑轮在改变平衡力臂的过程中驱使钢带绕在其上,以此来达到增大冲程、减小摩擦损耗的目的。分析计算了该抽油机的运动特性,并以CYJ10-1.8-200型常规游梁抽油机进行实例计算分析,发现采用后置滑轮机构后,悬点位移峰值增加了150%左右。建立了该抽油机1∶10的实体模型并进行了试验,结果表明,该抽油机计算分析结果与试验结果相符合,验证了悬点运动特性计算分析结果的正确性。

Abstract

In view of the shortcomings of high peak of crank torque and polished rod load,short stroke and serious wear of steel wire rope,the structural characteristics of the conventional beam pumping unit are analyzed. On the basis of that,the post pulley mechanism that change with the displacement of the suspended point and adjust the balance arm is designed. The steel belt is used to replace the traditional steel wire rope to fix on the post pulley. In the process of changing the balance arm post pulley driven steel belt around it to increase the stroke and reduce the friction loss. And the kinematic characteristics of this oil pumping unit are analyzed and calculated. Using the conventional beam pumping unit of CYJ10-1. 8-200 to calculate and analysis and find that the post pulley mechanism that is used has made the peak displacement of suspended point increase about150%. The solid model of the oil pumping unit 1∶ 10 is built and tested. The results show that the calculation and analysis results of this oil pumping unit are in accordance with the experimental results. The correctness of the calculation and analysis results of suspension point kinematic characteristics is verified.

关键词

后置滑轮游梁抽油机长冲程运动分析

Keywords

Post pulleyBeam pumping unitLong strokeKinematic analysis

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