TOOL FOR UNSCREWING COUPLING NUT OF GAS TURBINE ENGINE MODULAR ROTOR Russian patent published in 2018 - IPC F01D5/02 F01D25/28 B25B13/10 

FIELD: engines and pumps.

SUBSTANCE: tool for unscrewing the rotor coupling nut of the gas turbine engine module comprises a tubular element, a transverse disc, a finger driving mechanism relative to the transverse disc and axial rods. Tubular element is provided with multiple fingers radially movable between the first position, in which the radially outer free ends of the fingers are hidden radially inside the tubular element, and the second position, when the radially outer free ends of the fingers are radially extended outward and are able to come into contact with the teeth of the coupling nut. Transverse disc comprises radial grooves for directing the fingers, is made rotatable relative to the tubular element and is rigidly connected to the cylindrical member. Axial rods are located onto the tubular element to receive into the grooves the neck of the rotor. Finger driving mechanism and the cylindrical element are located inside the tubular element.

EFFECT: invention makes it possible to simplify unscrewing of the coupling nut of the gas turbine engine module rotor.

4 cl, 9 dwg