| 摘要 |
The subject of the invention is a device for screwing and unscrewing a nut (30-32) on a connecting element (2), characterised in that it comprises a frame (14) pivoting about a spindle (15) parallel to the connecting element (2) and supporting means (17, 19, 22, 26) for driving in rotation the nut (30 - 32) to be screwed in or unscrewed, and means (20, 24) for displacing the said drive means in rotation about an axis parallel to the axis of the connecting element (2) and at a speed identical to that of the nut when it moves during its screwing or unscrewing. …<??>The subject of the invention is also a method for screwing and unscrewing nuts on a connecting element. …<IMAGE>… |
