FIELD: pipeline transport.
SUBSTANCE: invention can be used for connecting taps to walls of pipes without stopping delivery of working medium, for instance, oil, along pipe. Hollow spindle is installed in housing with cutting tool on end getting out of housing through hermetically sealed movable contact. Spindle rotating mechanism has gear wheel mechanically coupled with electric motor. Hub of gear wheel is installed on spindle on sliding key fixed on spindle. Spindle axial shifting mechanism has screw installed in hollow spindle for relative rotation, and cluster of two fixed interconnected coaxial gears installed for engagement with gear wheels of spindle rotating mechanism.
EFFECT: enlarged range of technical means.
2 cl, 1 dwg
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