Composite transmission tower for power grid transmission lines and its composite brace structure

摘要

The present invention relates to the field of power transmission tower, and a composite cross arm structure of a composite tower for power grid transmission line is provided, including two sets of cross arm insulators arranged into a V-shaped arrangement horizontally, wherein a first end of each of the two sets of cross arm insulators is connected to the tower body of the composite tower at opening of the V-shaped arrangement; and a set of oblique-pulling insulators corresponding to each of the sets of cross arm insulators respectively, one end of which is connected to a second end of each of the two sets of cross arm insulators at apex of the V-shaped arrangement, and the other end of which is connected to the tower body over the two sets of cross arm insulators. The composite cross arm structure is constituted by the sets of cross arm insulators and the set of oblique-pulling insulators in a V-shaped triangular structure, so the composite cross arm structure is stable, capable of bearing high pressure, and can be used to suspend high voltage power transmission line. A composite tower for power grid transmission line with the above a composite cross arm structure is also provided.