Patent ID: 8746093
Filing Date: 2014-06-10
Classification: E21B,Y10T

Abstract:
1. An oil pumping unit, comprising: a belt ( a foundation ( a crown sheave ( a frame ( a support rod ( a belt pulley ( a pin shaft ( a crank ( a transmission shaft ( a bracket ( wherein: a bottom of said frame ( a top of said frame ( a top of said support rod ( a bottom of said support rod ( said bracket ( said transmission shaft ( said crank ( said bracket ( said crank ( said belt pulley ( one end of said belt ( an other end of said belt ( two or more of said pumping units are serially connected; said crown sheave ( one end of said transmission shaft ( an other end of said transmission shaft ( an other crank ( an other end of said second transmission shaft ( an end of a third transmission shaft ( cranks (