发明名称 |
Rotation unit for torque tong comprising a rotational part with teeth |
摘要 |
A rotation unit for a torque tong for making and/or breaking threaded connections between pipes and/or spinning pipes during screwing and/or unscrewing of pipes, primarily pipes used in petroleum production. The unit includes a fixed part and a rotary part arranged to grip a pipe to be rotated. The rotary part includes at least one movable gripping jaw arranged to be moved into engagement with the pipe. The rotary part includes toothing arranged to engage at least one chain, which is operatively connected to an actuator in order to move the chain and so impart rotary movement to the rotary part.
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申请公布号 |
US7387050(B2) |
申请公布日期 |
2008.06.17 |
申请号 |
US20040546821 |
申请日期 |
2004.02.26 |
申请人 |
AKER KVAERNER MH AS |
发明人 |
SLETTEDAL PER;EGELAND TERJE |
分类号 |
B25B17/00;B25B13/50;E21B19/16 |
主分类号 |
B25B17/00 |
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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