Power catwalk for lifting workover rig
2012
The invention discloses a power catwalk for a lifting workover rig. A base is provided with a lifting arm, a lifting arm is articulated with a fixed connecting lug on the base through a rotary end head connecting lug, simultaneously a connecting lug at the middle part of the lifting arm is also articulated with another fixed connecting lug on the base trough a lifting oil cylinder, a guide rail is arranged on the upper surface of the lifting arm and is internally provided with a plurality of groups of guide pulley groups, each guide pulley group is fixedly provided with a V-shaped groove, and each V-shaped groove is articulated with the lifting arm through a telescopic oil cylinder. According to the power catwalk disclosed by the invention, through stretching of the oil cylinder, each V-shaped groove is sent to the above a drilling platform surface, a drill string is placed in each V-shaped groove by utilizing a mechanical or manual mode and then is transferred to a horizontal position on the ground through the stretching of the oil cylinder; otherwise, the drill string placed in each V-shaped groove on the horizontal position on the ground is transferred to a well mouth to carry out drilling operation; and the power catwalk has a simple structure, is light in weight, is easy for maintenance and is suitable for being shifted and transported fast.
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