Title: Inverted pendulum variable-pitch beam pump
Application Number: 200610124205 Application Date: 2006.12.13
Publication Number: 1975101 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: E21B43/00;F16H21/00;G05D3/00
Applicant(s) Name: South China Technology Univ. Address:
Inventor(s) Name: Kang Longyun;Guo Zhenyu;Zhao Haibo
Attorney & Agent: heshu zhen
Abstract:
    The present invention relates to a reverse pendulum variable pitch walking-beam pumping unit. It is characterized by that in the upper portion of tail beam a curved rack guideway is fixed, the reverse pendulum balacing weight is movably fixed on the tail beam, its fixed point is positioned in the centre of fixed point of said curved rack guideway, in the middle portion of pendulum bar of reverse pendulum balancing weight a motor is fixedly connected. Said motor can be reciprocally moved on the curved rack guideway, and can be used for driving balancing weight and making it be reciprocally moved. Said invention also includes a controller, said controller can be used for detecting, analyzing and judging motor load change and giving out control signal to said motor so as to greatly raise motor efficiency.
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