DEVICE FOR MAKING HOLES IN ACTIVE PIPELINE Russian patent published in 2009 - IPC F16L41/04 

FIELD: machine building.

SUBSTANCE: present invention pertains to pipeline transportation of liquids and gases and can be used for making holes in active pipelines for connecting branch pipes and for fitting ultrasonic flowmeter sensors. A reducing sleeve is welded onto the pipeline. An adaptor is put onto the reducing sleeve, on which a gate is fastened. By rotating the handle, the feed axis is pulled out of the first chamber of the plunger projection, on which a cutting instrument is fastened. The cutting instrument is put into the inner cavity of the gate, adaptor and reducing sleeve and the first chamber is screwed into thread on the gate flange. By rotating the handle of the feed axis, the cutting instrument is brought to the wall of the pipe. The handle is set on the axis of rotation. The transmission clutch is pressed and gears are engaged. During rotation of the axis, the rotating bushing and rod, as well as transmission bushing rotate. Simultaneous rotation and forward transmission of the cutting instrument is achieved. The cut out part of the pipe is pressed inside the cutting instrument. The assortment of equipment is increased.

EFFECT: wider assortment of equipment for making holes.

2 dwg