链条抽油机是一种链传动无游梁抽油机，它适于做成长冲程抽油机，质量轻、结构紧凑、金属耗量少。
计算结果表明，质量合格的石油钻机传动滚子链能胜任链条抽油机的传动。
The result of calculation shows that qualified roller chains for drilling rigs are competent for the job on chain-drive pumping units.
对LCJ1250链条抽油机的静力学分析与计算表明，由于轨迹链条承受侧向弯曲作用而早期失效，造成抽油机可靠性低。
Static analysis of Model LCJ1250 chain pumping unit indicates that the rather low reliability of the unit is due to the premature failure of the path chain caused by the action of lateral bending.
无换向架链条抽油机的链条承受的总拉力为悬点载荷与平衡重的差值加连杆对链条的水平分力在链条上形成的附加拉力之和，受力状况优于普通链条抽油机，且能得到控制。
The force conditions of the chain on a chain drive pumping unit without reverse rack are much more favorable than that on conventional chain drive pumping units, and can be well controlled.
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