Robot arm

A portable boom assembly for accurately positioning, holding, and downcrowding a power tool to perform its use function which comprises a base adapted to be mounted on the ground or on a truck, a carriage movable longitudinally and transversely on said base, an upright rotatable pedestal tiltably mounted on said carriage, a boom arm pivotally mounted on said pedestal for swinging in a vertical plane and rotatable therewith for swinging in a horizontal plane, an extension arm telescoped in said boom arm, an extensible forearm suspended from said extension arm, a tool mounting on said forearm, fluid pressure means driving said carriage, rotating said pedestal, swinging said boom arm on said pedestal, extending and retracting said extension arm, and extending said forearm to downcrowd the tool mounting, and a single control station actuating said fluid pressure means.

A robot arm assembly especially useful for transport to a work site to accurately position, hold, and downcrowd a power tool which comprises a base, an upright pedestal on said base, a telescoped boom assembly pivoted on said pedestal, means for rotating said pedestal to swing said boom assembly, an elbow on the end of said boom assembly, an extensible forearm suspended from said elbow, a wrist on said forearm, a power tool mounting suspended from said wrist, means for fixedly holding the forearm on the elbow, means for fixedly holding the tool mounting on the wrist, a first fluid pressure jack pivoting said boom on said pedestal, a second fluid pressure jack extending and retracting the boom, a third fluid pressure jack extending the forearm, and a strut connecting the suspended forearm to the boom arm.

A robot arm assembly for accurately positioning, holding, and downcrowding a power tool which comprises an extensible and retractable boom, a support for one end of said boom, a rotatable and swingable shoulder connection between said support and said boom, an elbow on the extensible end of said boom, an extensible forearm removably mounted on said elbow, a wrist on said forearm, a power tool mounting selectively mounted on said wrist and on said elbow, and means for rotating said shoulder, tilting said boom, extending and retracting said boom, and extending said forearm.

A hydraulically actuated robot arm assembly for accurately positioning, holding, and downcrowding a power tool having a base frame, a carriage riding on said base frame, an upright pedestal mounted on said carriage for tilting in all planes and for rotation about its own axis, a telescoped boom pivotally mounted on said pedestal, hyraulically actuated means driving said carriage on said base frame, tilting said pedestal on said carrige, rotating said pedestal, tilting said boom on said pedestal, and extending and retracting the telescoped boom arm, solenoid actuated valves controlling hydraulic flow to and from all of said hydraulic means, an electrical circuit selectively actuating said valves, and a single portable switch unit controlling said circuit.

A portable self-contained hydraulically actuated boom assembly for accurately positioning, holding, and downcrowding a power tool and for mounting on a truck or on the ground which comprises a base, an upright pedestal mounted on said base for tilting in all planes and for rotation, a boom pivoted on said pedestal for swinging in a vertical plane, hydraulic jacks mounted on said base controlling the tilting of the pedestal, tilt switches mounted on said pedestal, and hydraulic valves controlled by said tilt switches for maintaining the pedestal in a vertical upright position regardless of the attitude of the base.

A portable self-contained hydraulically actuated boom assembly for accurately positioning, holding, and downcrowding a power tool and for mounting on a truck or on the ground which comprises a base frame, a carriage movable longitudinally and transversely on said frame, a battery, an electric motor energized by said battery, a hydraulic pump driven by said motor, and a bank of solenoid actuated hydraulic valves suspended from said carriage, an umbilical cord extending from said bank of valves, a portable switch box on said umbilical cord, an extensible boom pivoted on said pedestal, a forearm suspended from said boom, hydraulic means receiving hydraulic fluid from said bank of valves driving said carriage, tilting said pedestal, rotating said pedestal, tilting said boom, extending and retracting the telescope boom arm, and extending the forearm whereby all operations of the boom assembly are controlled from the switch box.