Tubular electric steel cable mast - has pair of arms extending from two sides, with tubular, interfitting frusto-conical sections

摘要

The tubular post has pairs of arms extending from two opposite sides for carrying overhead electricity wires. Both the support posts and each pair of arms consist of steel, tubular, straight, truncated-cone shaped sections of circular cross-section. At the end of each arm is a traction piece, such as bars, or cables. Each pair of arms consists of two inside tubular pieces which are symmetrical in relation to the axial plane of the mast. The tubular sections go through the wall of the mast and are welded to its outside. The sections taper conically towards the outside. Each pair of arms consists of two other tubular sections which are slid concentrically to fit into the free ends of the tubular pieces. The second tubular sections are also of truncated-cone shape and taper towards the end.