COMPOSITE TOWER FOR POWER TRANSMISSION LINES OF POWER GRID AND COMPOSITE CROSS ARM STRUCTURE THEREOF

摘要

The present invention relates to the field of power transmission towers. Provided is a composite cross arm structure for a composite tower for power transmission lines of a power grid. The composite cross arm structure comprises two sets of cross arm insulators arranged in a V-shape along a horizontal plane direction, a first end of each set of cross arm insulators at a V-shaped opening being connected to a tower body of the composite tower; and cable-strain insulators corresponding to each set of cross arm insulators, one end of the cable-strain insulators being connected to second ends of the cross arm insulators at the top point of the V-shape and the other end of the cable-strain insulators being connected to the tower body above the cross arm insulators. Since the composite cross arm structure is formed by the combination of the cross arm insulators of V-shaped triangle structure and the cable-strain insulators, the structure is relatively stable, and capable of bearing a relatively large pressure, so as to be able to hang the high-voltage power transmission lines of a power grid. The present invention further provides a composite tower for power transmission lines of a power grid having the composite cross arm structure.