DEVICE OF BEND TAPPING-IN INTO THE OPERATING PIPELINE, REPLACEMENT CHUCK FOR IT AND THE SELF-CENTERING CENTRALIZER FOR THE DEVICE INSTALLATION ONTO THE PIPELINE Russian patent published in 2018 - IPC F16L41/04 B23B41/08 

FIELD: machine building.

SUBSTANCE: group of inventions refers to devices for the bends tap-in into the operating pipeline without the pressure reduction therein. Device includes located in the post spindle, forming with the spindle helical pair motion screw for the cutting tool feeding. In the post the splined shaft is arranged, inside which the spindle with screw is located. On the spindle lower end the replaceable chuck with located therein eccentric grip for the cut “nickel” extraction and the cutting tool are attached. At the top end hand wheel for the screw rotation is installed. At the screw upper end the lower spring is attached, which rests against the splined shaft upper end, and above the shaft and spindle sealing packing device the upper spring is fixed. Device contains the worm gear for spindle rotation and mounted on the post electric motor, transmitting torque to the gearbox worm through the chain drive. In the post two discharge unions are located. Spindle contains the unscrewing and falling out limiter. Replaceable chuck contains housing, in which the eccentric gripper is located, which is the spring-loaded washer located in the oval hole and interacting with the button for the washer movement to the central position.

EFFECT: invention application allows to extend the functionality by increase in the tapped-in bends dimensions range with ability to operate in manual and electrical modes.

8 cl, 8 dwg