INTRA-PIPE MANIPULATOR Russian patent published in 1995 - IPC

FIELD: pipe line engineering. SUBSTANCE: supporting rod is constructed as a double-arm lever with a spring-loaded bearing roller. A mechanism for lifting the rod has a driving screw pair whose nut is movably mounted. A shaped cam is mounted on the carrying frame with a propeller. The double-arm lever is directly pivotally connected to the nut and is made up as two mutually spring-loaded and telescopically interconnected movable and fixed sections. The bearing roller is set on the movable section which is connected electrically to the drive of rotation of the screw pair. The fixed section is provided with a probe which is in contact with the cam. EFFECT: enhanced reliability. 3 dwg