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A remotely controlled, hydraulically operated cutter apparatus for use in a conduit includes control panel for generating a plurality of control signals for controlling the operation and a source of pressurized hydraulic fluid. Valves are provided for receiving both the pressurized fluid and the con

A remotely controlled, hydraulically operated cutter apparatus for use in a conduit includes control panel for generating a plurality of control signals for controlling the operation and a source of pressurized hydraulic fluid. Valves are provided for receiving both the pressurized fluid and the control signals, and for distributing the received fluid in accordance with the received control signals. A hydraulically powered cutter motor located within the conduit and including a cutting tool receives hydraulic fluid from the valves for driving the cutting tool. The cutter motor is supported within the conduit by a structural unit. A first hydraulically actuated cylinder is included for receiving hydraulic fluid from the valves and for centering and holding the structural unit in a fixed axial position within the conduit. Second, third, fourth and fifth hydraulically actuated cylinders are provided for adjusting the axial and radial position of the cutter motor, for rotating the cutter motor and for adjusting the angular position of the cutter motor to facilitate cutting by the cutting tool.

대표청구항 ▼

A remotely controlled, articulatable hydraulically operated cutter apparatus for use within a conduit having an axis, the cutter apparatus comprising: control means located outside of the conduit for generating a plurality of control signals for controlling the operation of the cutter apparatus; thr

A remotely controlled, articulatable hydraulically operated cutter apparatus for use within a conduit having an axis, the cutter apparatus comprising: control means located outside of the conduit for generating a plurality of control signals for controlling the operation of the cutter apparatus; three structural units located within the conduit and sequentially coupled together end to end for concurrent movement within the conduit; a first of said structural units including a source of pressurized hydraulic fluid; a second of said structural units including valve means in fluid communication with the fluid source and connected with the control means for receiving pressurized hydraulic fluid from the fluid source and the control signals from the control means and for distributing the received hydraulic fluid in accordance with the received control signals; the third of said structural units comprising a cutter supporting subassembly, a holder subassembly and a cutter positioning subassembly; a hydraulically powered cutter motor pivotally supported by the cutter supporting subassembly and extending along an axis generally perpendicular to the axis of the conduit, the cutter motor including a cutting tool, said cutter motor being in fluid communication with the valve means and receiving hydraulic fluid from the valve means for driving the cutting tool; first hydraulically actuated means comprising a single hydraulic cylinder within the holder subassembly and in fluid communication with the valve means for receiving hydraulic fluid from the valve means for axially centering the third structural unit within the conduit and for holding the third structural unit at a fixed axial position within the conduit as long as the received hydraulic fluid exceeds a predetermined minimum; second hydraulically actuated means within the cutter positioning subassembly and in fluid communication with the valve means for receiving hydraulic fluid from the valve means for varying the axial position of the cutter motor with respect to the third structural unit in accordance with the received hydraulic fluid; third hydraulically actuated means within the cutter positioning subassembly and in fluid communication with the valve means for receiving hydraulic fluid from the valve means for varying the radial position of the cutter motor with respect to the third structural unit in accordance with the received hydraulic fluid; fourth hydraulically actuated means within the cutter positioning subassembly and in fluid communication with the valve means for receiving hydraulic fluid from the valve means for rotating the cutter motor up to 180 degrees about the axis of the conduit in either a clockwise or counterclockwise direction with respect to an initial position in accordance with the received hydraulic fluid; and fifth hydraulically actuated means within the cutter supporting subassembly and in fluid communication with the valve means for receiving hydraulic fluid from the valve means for pivoting the cutter motor about the axis extending generally perpendicular to the axis of the conduit, the first, second, third, fourth and fifth hydraulically actuated means cooperating to position the cutter motor in accordance with the control signals to facilitate the cutting by the cutting tool.