Patent ID: 6467715
Filing Date: 2002-10-22
Classification: H02G

Abstract:
An overhead power line installation apparatus for installing electric wires respectively wound around wire bobbins in the form of power lines of a 3-phase 3-wire type or power lines of a 3-phase 4-wire type on posts, comprising:a frame; an engine installed on the frame; a plurality of wire bobbin driving units arranged on the frame and adapted to rotate the wire bobbins, respectively; a plurality of wire bobbin support units installed on the frame, each of the wire bobbin support units serving to support an associated one of the wire bobbins to allow a rotation and level adjustment of the associated wire bobbin; a wire twist preventing unit arranged on the frame and adapted to prevent the wires from being twisted when the wires are wound around or unwound from the wire bobbins; and a hydraulic circuit receiving a drive power from the engine, thereby generating a hydraulic pressure, the hydraulic circuit serving to control the wire bobbin driving units, the wire bobbin support units, and the wire twist preventing unit using the hydraulic pressure, wherein each of the wire bobbin driving units includes a plurality of drive rollers that come into contact with at least one outer peripheral edge of a wire bobbin and rotate said wire bobbin, when said at least one outer peripheral edge of a wire bobbin is placed on said drive rollers and the drive rollers are rotated.