Walking beam formula oil field beam -pumping unit

The utility model belongs to the technical field of oilfield equipment and a walking beam formula oil field beam -pumping unit is disclosed, including base, support, crank device, crossbeam and horse head, base top and leg joint, base one end top is equipped with the block terminal and block terminal one side is equipped with the motor, the motor passes through belt and retarder connection, reduction gear one side is equipped with brake safeties, reduction gear one side is connected with the crank device, it is articulated with the connecting rod that the crank device passes through crank pin means, the connecting rod top is connected with the cross beam axial bearing, cross beam axial bearing top is connected with the crossbeam, crossbeam one side is connected with the walking beam, walking beam one end is equipped with the horse head, the horse head is connected with the polished rod eye through hanging the rope. The utility model discloses a damping device when the walking beam is swung, on the one hand, reduces the vibration of walking beam, guarantees that the beam -pumping unit has fine stability, on the other hand, the extension beam -pumping unit life.