OSCILLATING CRANK PUMPING UNIT Russian patent published in 2014 - IPC F04B47/02 

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to oil production equipment, particularly, to oscillating crank pumping unit. The latter comprises motor and reduction gear to drive said pump unit. Gearing is composed of oscillating crank gear with rotary link. It does not incorporates walking beam, walking beam head and rope hanger. Note here that link rear end is rigidly secured in slide block to notably decrease dynamic and vibration loads at all units of the plant.

EFFECT: higher reliability, ease of servicing, lower metal input, possibility of use at shelf and in sea.

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