Improved oil field pumping unit
A technology for pumping units and oil fields, which is applied in the fields of exploitation fluid, wellbore/well parts, earthwork drilling and production, etc. It can solve the problem of high price of double-speed motors and frequency converters, the motor pulley cannot be too small, and cannot meet the requirements of low stroke times and other issues to achieve the effect of high work efficiency, low cost and simple structure
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[0013] See figure 1 An improved oilfield pumping unit shown includes a base 1, a support frame 2, a driving device 3, and a beam 4. The support frame 2 is mounted on the base 1, and the beam 4 is mounted on the support frame 2. The base 1 is provided with a frame 5, the drive device 3 is mounted on the frame 5, the output end of the drive device 3 is connected with a gearbox 6, and the output end of the gearbox 6 is connected with a crank rod 7, The front end of the crank rod 7 is hinged with a connecting rod 8, one end of the connecting rod 8 is hinged on the cross beam 4, the front end of the cross beam 4 is provided with a donkey head 9, the base 1 is provided with a reserve power supply 10, so The reserve power source 10 is connected to the driving device 3.
[0014] A shock absorber 11 is provided at the connection between the beam 4 and the support frame 2, and the donkey head 9 is detachably connected to the beam 4.
[0015] The bottom of the base 1 is provided with walkin...
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