Patent Number: 9,970,420

Title: Dual horsehead block and tackle pumping unit

Abstract: A dual horsehead block and tackle beam pumping unit including a steel frame, a walking beam installed on top of the steel frame, horseheads with movable pulleys, pulling wire ropes, load wire ropes, damping extension springs, a reversing reducer, an output drum, a counterweight box, reversing brake mechanisms, and an electric motor is provided for single well and dual well operations. The horseheads are installed on opposing ends of the walking beam. The movable pulley of each horsehead has a pulling wire rope. The first and second ends of each pulling wire rope are connected to the damping extension spring and the output drum respectively. A lower end of the load wire rope hanging on the right hand side horsehead is connected to the counterweight box. On the bottom of the steel frame, the electric motor, the reversing reducer, and the output drum are installed on a base.

Inventors: Wang; Yi (Panjin, CN), Wang; Jin (Panjin, CN), Yang; Zijiang (San Jose, CA)


International Classification: F04B 47/02 (20060101); F04B 17/03 (20060101); F16H 3/66 (20060101); E21B 43/12 (20060101)

Expiration Date: 2022-05-15 0:00:00