ROTOR ASSEMBLY OF HYDRAULIC WRENCH Russian patent published in 2013 - IPC E21B19/16 

FIELD: machine building.

SUBSTANCE: rotor assembly of hydraulic wrench includes a drive rotor located in the wrench housing and having a connector, rollers contacting the drive rotor and a split bushing with jaws with plates, which are installed in it. Assembly is provided with two moving jaws with plates, which are mirror-like located symmetrically relative to axis of split bushing with a fixed jaw; at that, moving jaws have shaped curved convex and concave surfaces contacting the rollers.

EFFECT: improving operating reliability of the device and improving the productivity owing to reducing the number of readjustments during operation with pipes with simultaneous simplification in operation.

1 dwg