ANTENNA SUPPORTING PART STRUCTURE FOR RADIO STEEL TOWER

摘要

PROBLEM TO BE SOLVED: To reduce the influence of wind pressure, to increase strength and to quickly, easily and stably change the direction of an antenna by setting a spherical body constituted by linking plural pipe members at the upper part of a steel pipe single column, and erecting and fixing plural antenna receiving pipes on the spherical body. ;SOLUTION: A spherical body 30 constituted by linking plural pipe members is set at the upper part of a steel pipe pole 1 erected on ground. Plural ring flanges 2-5 are fixed to the outer peripheral part of the steel pipe pole 1 with intervals. Ring members 8 and 9 constituted of pipe members surrounding the steel pipe pole 1 are fixed through plural radially arranged upper linking member 10 and lower linking member 11 to the second ring flange 3 and the third ring flange 4 positioned in the middle with mounting flanges 10F and 11F. A set of two antenna receiving pipes 20 are erected and fixed outside the ring members 8 and 9.;COPYRIGHT: (C)1999,JPO