新型链条抽油机的方案设计及性能分析

Scheme design and performance analysis of a new chain drive pumping unit

针对目前链条抽油机换向机构复杂、轨迹链条和主轴销容易发生断裂事故以及气动平衡系统复杂等问题,提出了一种新型曲柄滑块链条式抽油机.通过曲柄滑块机构来实现换向,利用平衡重小车的上下运动来实现抽油机的平衡.整个抽油机具有结构简单、安全可靠、运动平稳、超长冲程、高效节能等优点.

The existing chain drive pumping unit has shortcomings as follows:the reverse mechanism and the aerodynamic balance system are relatively complicated,and the path chain and the main axle pin easily break.For solving these problems,a new type of chain drive pumping unit is presented.It realizes the change of motion direction by slider-crank mechanism and it realizes the movement balance by the up and down movement of the balancing weight trolley.Consequently,the whole oil-well pumping unit has simple structure,smooth movement and super-long stroke,its operation is reliable and energy-saving.