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    • 4. 发明公开
    • BOOM TYPE POWER TONG POSITIONER
    • KRAFTANGETRIEBENE-AUSLEGEZANGENPOSITIONIERVORRICHTUNG
    • EP1485568A4
    • 2006-04-05
    • EP03745160
    • 2003-03-19
    • ROGERS TOMMIE LOUIS
    • ROGERS TOMMIE LOUIS
    • E21B19/16B66C23/16
    • B66C23/16E21B19/165
    • Apparatus for positioning a power tong at a desired location with respect to the distance above the rig floor, and with respect to the center of the rig floor. A pedestal is secured to the structure of the rig. An upright member is mounted on the upper end of the pedestal, with a bearing disposed between the upright member and the pedestal, the bearing permitting the upright member to rotate around a vertical axis when moved by a powered ring gear assembly. A telescoping boom is rotatably mounted on the upright member, and one end thereof extends over the central part of the rig floor. Power tongs attached to the boom may thereby be positioned at desired positions with respect to the rig floor. Controls mounted on the power tongs and/or on the upright member permit control of the rotation of the boom, the upright member, ang the power tong.
    • 用于将动力钳定位在相对于钻台底部上方的距离以及相对于钻台底部中心的期望位置的装置。 底座固定在钻机的结构上。 直立构件安装在基座的上端,轴承设置在直立构件和基座之间,该轴承允许直立构件在由动力齿圈组件移动时围绕竖直轴线旋转。 伸缩式吊杆可旋转地安装在直立构件上,并且其一端在钻台底部的中心部分上延伸。 附接到吊杆的动力钳可因此定位在相对于钻台的期望位置处。 安装在动力钳和/或直立构件上的控制装置允许控制悬臂,直立构件和动力钳的旋转。