It's very important for some petroleum machinery(e. g. drilling rig and pumping unit) to carry on reliability analysis and design of the system of the narrow V type belt drive.

开展窄V带传动系统可靠性分析与设计对于提高钻机、抽油机等石油钻采机械的质量和效益具有重要意义。

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Applying the limited unit law the article carries out the static analysis to the electrical machinery commutation pumping unit support, calculated its static intensity and rigidity.

应用有限单元法对电机换向抽油机支架进行了静态分析，计算了其静强度和刚度。

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