back-crank pumping unit [油气] 前置式游梁抽油机
crank angle selecting unit 曲轴转角自动调节装置
back-side-crank pumping unit 单拐多连杆抽油设备 ; 单拐多连杆抽油装备
crank pumping unit 前置式游梁抽油机
crank-balanced pumping unit [油气] 曲柄平衡式抽油机
CSU Crank Angle Selecting Unit 曲轴转角自动调节装置
crank-balanced unit 曲柄平衡抽油机
crank of pumping unit 抽油机曲柄
The motor car engine crank is one of automobile power unit core components, Its manufacture quality requirement is very high.
汽车发动机曲轴是汽车动力装置的核心零件之一，其制造质量要求很高。
Compared with conventional beam pumping unit, the swing-rod beam pumping unit can reduce the maximum crank axle torque markedly, reduce and even eliminate negative crank axle torque.
同常规型游梁式抽油机比较，该机型可以显著降低曲柄输出轴的最大扭矩，减小甚至消除负扭矩，在降低能耗的同时改善了减速箱的受力状况。
In view that large top torque and negative torque are produced when crank balance (primary balance) is adopted, we present the secondary balance of beam pumping unit.
针对游梁式抽油机在采用曲柄平衡(又称一次平衡)时存在的峰值转矩较大、负转矩严重等现象，提出了有关抽油机的二次平衡问题。
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