| 摘要 |
The present invention relates to an oil machinery, and provides a pumping and repairing unit comprising: an electrical control cabinet, a main frame, a supporting platform, a motor, an electrically operated brake, a coupling, a speed reducer, an oil pumping polished rod, a polished rod eye for the oil pumping polished rod, an oil pumping polished rod rope, a balance weight case, a balance weight rope hanging device, a balance weight rope, a protection rope, a protection rope catching device, and a driving device. The oil pumping polished rod rope has an end connected with the oil pumping polished rod and another end fixed to the driving device. Each of the balance weight rope and the protection rope has an end connected with a balance weight rope hanging device, and another end fixed to the driving device. The driving device and a brake wheel disposed at an end of the driving device constitute a driving and braking device. A fixed pulley block is disposed at the supporting platform. A workover rope is fixed to the driving and braking device, and has another end which is fixed to the supporting platform after it has wound around the fixed pulley block and a movable pulley block. An elevator is coupled with a lower end of the movable pulley block. A braking handle is disposed at a bottom of the main frame, and the brake wheel is controlled by the braking handle. The pumping and repairing unit can achieve pumping oil with high efficiency and safe workover. Especially, the pumping and repairing unit has a complete and reliable function of workover, and does no harm to transmission components thereof and does not pollute environment during workover. Entire process of the workover is simple and convenient in operation.
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