| 摘要 |
FIELD: long load-carrying steel structures, supports of power transmission lines and may be used as tangent-suspension supports of power transmission lines with voltage of 6-10-kV class, in difficult terrain of swampy type. SUBSTANCE: support has post secured in base, folding servicing platform, cross-arms of extreme phases installation in the form of two-cantilever Y-shaped insulating structure symmetrical to axis of post and ending in horizontal branches to which supporting strings with wires of extreme phases are secured. Cross-arm of the middle phase is compound of two joined metal tie-rods installed on cross-arms of extreme phases in the form of flexible tie to which strings with wire of middle phase are attached. Wires of all phases are secured at the same level and provided with vibration dampers. Installed over the entire length of post are clamps-steps. Support post is made of metal pipes or metal section. Metal tie-rods of middle cross-arm are made of reinforcing structure and secured at the beginning of horizontal branches of cross-arms of extreme phases by means of welded opposite triangular cover plates. Supporting string of wire of middle phase is installed on rocker joining the metal tie-rods of middle cross-section. EFFECT: higher reliability, improved service properties and reduced specific metal consumption. 11 cl, 2 dwgw
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