变角自让位式抽油机驴头

‘Variable-Angle' ‘Self-Abdicating' Horsehead on Pumping Units.

在分析现有抽油机驴头让位机构的基础上，提出变角自让位机构，并对其设计计算进行了分析。实践表明，变角自让位式抽油机驴头，在使用、制造等方面均优于现有让位机构，适用于中、大型抽油机。

On the basis of an analysis of the current abdicating mechanism for the pumping unit horsehead, the authors present a 'variable-angle' 'self-abdicating' mechanism, and make a discussion on the design of this new mechanism. Practice shows that the horsehead with the new mechanism is more preferable in use and manufacture than that with the current abdicating mechanism, and is suitable for both large-and medium-size pumping units.