Clamping device for screwing tool for fixing formwork structures in molding of concrete shell, has endless screw comprising driving head coupled in removable way to output shaft of screw gun

摘要

The device (2) has a support (4) and a gear (6) e.g. reduction gear, comprising a toothed wheel (8) and an endless screw (12) mounted rotatively on the support via smooth bearing (30), and geared with each other. The wheel has an opening (16) for receiving and rotating a nut. A head part of a screw is tapped to form the nut. The endless screw comprises a driving head (14) coupled in a removable way to an output shaft of a screw gun.