Counterbalance system for pumping units

摘要

A counterbalance system for a cantilevered beam pumping unit includes a counterbalance support structure adapted to be mounted in an operating position on the cantilevered beam of the pumping unit. A suspension element is connected to the counterbalance support structure so as to depend from a suspension end of the counterbalance support structure, and a counterbalance weight is connected to the first suspension element in a spaced apart relationship with respect to the counterbalance support structure. A stabilizer device is connected to the counterbalance weight via a first pivot connection and is connected to a structure separate from the counterbalance weight via a second pivot connection.

主权项

1. A counterbalance system including:
(a) a counterbalance support structure adapted to be mounted on a cantilevered beam of a cantilevered beam pumping unit in an operating position; (b) a first suspension element connected to the counterbalance support structure so as to depend from a suspension end of the counterbalance support structure when the counterbalance support structure is in the operating position; (c) a first counterbalance weight connected to the first suspension element so as to be suspended from the counterbalance support structure by the first suspension element; (d) a first stabilizer device having a first pivot connection to the first counterbalance weight and a second pivot connection to a structure separate from the first counterbalance weight, the first and second pivot connections (i) facilitating movement of the first stabilizer device in a first plane coinciding with, or parallel to, a plane of motion of the cantilevered beam in the operation of the pumping unit, and (ii) resisting movement of the first stabilizer device in a direction perpendicular to the plane of motion of the cantilevered beam.