Title: Simple pendulum variable-pitch beam-balanced pump
Application Number: 200610124206 Application Date: 2006.12.13
Publication Number: 1975102 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;Zhao Haibo;Liu Gaungxu
Attorney & Agent: heshu zhen
Abstract:
    The present invention relates to a simple pendulum variable pitch balancing walking-beam pumping unit. It is characterized by that the upper end of walking beam is equipped with a simple pendulum device, in the middle portion of supporting frame of simple pendulum a rack guideway is fixed, in the middle portion of pendulum bar a motor is fixedly connected. Said motor can be reciprocally moved on the rack guideway. Said invention also includes a controller, said controller can be used for detecting load and controlling motor so as to greatly raise efficiency of motor.
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