MULTISPINDLE WRENCH TO SCREW UP STUDS WITH ANGULAR MISALIGNMENT OF AXES Russian patent published in 2014 - IPC B23P19/06 B25B21/00 

FIELD: machine building.

SUBSTANCE: multispindle wrench comprises a casing 1 and a drive and several movable spindles 10 with tools 11 to grip a stud installed inside it. The wrench is fitted by a central gear wheel 5 kinematically connected to the drive, couplings 7 kinematically connected to the central gear wheel 5 on one side and to spindles 10 on the other side, gear sets 8 installed on the output shafts of couplings 7 which are spring-loaded by cardan shafts 9 pivotally connected to the spindles 10 on one side and to the output shafts of the gear sets 8 on the other side, and a frame 13 fixed in the tightening zone. Planks 14 are installed on the frame with the possibility of cross travelling. Plates 15 with guiding bushes for spindles 10 are set on the planks with the possibility of longitudinal travelling.

EFFECT: possibility to readjust a wrench for required centre-to-centre distances and to screw up group threaded joints with small centre-to-centre distances.

3 dwg