An oil well pumping apparatus

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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Details

F04B 47/12 (2006.01) F04B 47/02 (2006.01) F04B 47/14 (2006.01)

Patent

CA 2580293

The present invention relates to an oil well pumping apparatus, comprising a power device; a crank arm connected to the power device via a transmission device, said crank arm is rotatable around a fixed axis at one end thereof; a crank counter-weight mounted to the crank arm and spaced from said fixed axis; a walking beam pivotally supported by a bearing and comprising a first part and a second part connected to each other; a walking beam counter-weight mounted to the walking beam; and a link pivotally connected to the crank arm at one end thereof, and pivotally connected to the walking beam at the other end thereof; wherein the centroid of the walking beam counter-weight is offset away from a longitudinal axis of the walking beam

La présente invention concerne un appareil de pompage de puits de pétrole, comprenant un dispositif de puissance; un bras de manivelle relié à ce dispositif de puissance par l'intermédiaire d'un dispositif de transmission, ledit bras de manivelle pouvant tourner autour d'un axe fixe à une de ses extrémités; une masselotte de manivelle montée sur le bras de manivelle et espacée dudit axe fixe; un balancier supporté de manière pivotante par un palier et comprenant une première partie et une seconde partie reliées l'une à l'autre; une masselotte de balancier montée sur le balancier; et une liaison reliée de manière pivotante au bras de manivelle à une de ses extrémités et au balancier à l'autre extrémité; le centre de gravité de la masselotte de balancier est décalé à partir d'un axe longitudinal du balancier.

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