PUMPING UNIT Russian patent published in 2004 - IPC

FIELD: mechanical engineering; oil producing industry. SUBSTANCE: invention relates to mechanical drives of well pumps designed for producing liquids, mainly, fuel oil, through wells. Proposed pumping unit contains post, one-arm walking beam, crossmember, connecting rods, cranks with counterweights. Axis of crank rotation and axis of crossmember rocking are arranged at equal distance from walking beam rocking axis. Ratio of front arm of walking beam to distances from axis of crank rotation to axis of walking beam rocking in vertical and horizontal are 10:5:. EFFECT: provision of effective mechanical layout of pumping unit, reduced consumption of power. 2 dwg