Rotary table device for a pipe string
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United States of America Patent
Stats
-
May 20, 2014
Grant Date -
Jan 17, 2013
app pub date -
Jan 25, 2011
filing date -
Jan 26, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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.
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Family
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