发明名称 |
ROTARY TABLE DEVICE FOR A PIPE STRING |
摘要 |
A rotary table device is provided with means arranged for suspension of a pipe string. The rotary table comprises a rotary ring arranged rotatably about the central axis of the rotary table. The rotary ring is formed by two or more ring sections, each connected to a system comprising a bearing housing section rotatable relative to a base section, a bearing housing groove being formed in a base contact surface on the bearing housing section and a corresponding base groove being formed in an opposing bearing housing surface in the base section. The grooves form a curve-shaped track for a roller body and the groove has a curvature center coinciding with the central axis of the rotary table. The rolling diameter of the roller body exceeds the collective depth of said grooves, and a channel connecting the end portions of the bearing housing groove is formed in the bearing housing section. |
申请公布号 |
EP2529073(A1) |
申请公布日期 |
2012.12.05 |
申请号 |
EP20110737331 |
申请日期 |
2011.01.25 |
申请人 |
WEST DRILLING PRODUCTS AS |
发明人 |
KROHN, HELGE;KALVATN, OVE;GRINROED, MADS;SKJAERSETH, ODD B. |
分类号 |
E21B3/04;B25B13/50;E21B19/16;F16C19/00 |
主分类号 |
E21B3/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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