FIELD: sea boring equipment. SUBSTANCE: device has vertical hollow guiding posts, clamping device for engaging vertical pipe, connected to racks, and driving means, located on the derrick. Racks are located inside hollow guiding posts. Driving means can move racks in the posts. Clamping device includes a platform with fixing elements in form of sliders for engaging the pipe. Driving means have hydraulic engines. Floor of derrick can be connected to racks by means of hydraulic locking devices. EFFECT: simplified device construction. 7 cl, 15 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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