发明名称 |
DRILL PIPE HANDLING MECHANISM |
摘要 |
<p>DRILL PIPE HANDLING MECHANISM A drill pipe handling mechanism for a drilling rig includes spaced apart upper and lower arms mounted on a shaft which is mounted for pivotal and limited axial movement with respect to an axis which is spaced from and parallel to the drilling axis. The lower arm includes a receptacle for the lower end of a drill pipe section. The upper arm includes a drill pipe holder having a power actuated movable gate section. A drill pipe retainer is pivotally mounted on the shaft above the pipe holder and is operated by a separate power actuator. Opposed power actuated pipe gripping and holding wrenches are disposed on the lower part of the rig mast for gripping and holding a drill pipe section while threaded joints are broken loose by a rotary head connected to the upper end of the drill string. A power actuated wrench is mounted for pivotal movement into pipe gripping position for breaking loose threaded joints which cannot be loosened by the rotary head.</p> |
申请公布号 |
CA1071183(A) |
申请公布日期 |
1980.02.05 |
申请号 |
CA19780298502 |
申请日期 |
1978.03.08 |
申请人 |
COOPER INDUSTRIES, INC. |
发明人 |
MITCHHART, RAY M.;ZINGL, HANS |
分类号 |
E21B19/20;(IPC1-7):21B19/14 |
主分类号 |
E21B19/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|