TRANSMISSION TOWER Russian patent published in 1996 - IPC

FIELD: power engineering, design of rapid mounted V-shaped hinge high-voltage transmission towers. SUBSTANCE: tower is additionally provided with two pairs of lateral tension ropes 6 diverging downward and forming united damping chain together with single lateral tension ropes 5 and flexible transverse 2 and phase wires 4. All loads to members of the tower are distributed through the chain, and uprights alongside and crosswise transmission line are unfastened through the chain. Upper ends of coupled tensions 6 are attached to tops of uprights 1, and lower diverging ends of these tension ropes of each upright are attached to individual lateral hinges 7 and 8, installed on common elongated foundation 12 placed on surface along axis of the transmission line. Hinges 7 of tension ropes 6 are placed on different sides of support hinge 10 of upright 1 on the same horizontal axis. Hinges 8 and support hinge 9 of another upright 1 are also placed at one axis. Hinges 7 and 10 of one upright 1 are displaced about hinges 8 and 9 of another upright along vertical and horizontal lines. All hinges are bolted and installed in pairs to feet 11 attached with clamps to foundation 12. When installing supports of upright 1 are alternately secured with bolted hinges 9 and 10 to foot 11 and laid down on one another on one side of foundation 12 to reduce dimensions of installation site. Then lateral tension ropes 5, coupled tension ropes 6, ends of screw transverse 2 with insulators 3 and attached phase wires are secured to tops of uprights 1. Tension ropes 6 are attached with bolted hinges 7 and 8 to lateral feet 11, and free lower end of lateral tension rope 5 is anchored on the side of horizontal upright 1. End of another lateral tension rope 5 is secured to the hoist and lifting of support uprights is carried out, and dip of flexible screw transverse 2 is adjusted. Flexible transverse 2 is made of polymeric insulators 3, and its dip between uprights 1 in installation conditions is set by tightening lateral tension ropes 5 within limits of optimal convergence angle value of terminal insulators 3 and horizontal line. Optimal value of convergence angle between terminal insulators and horizontal line in installation conditions is determined under formula as follows: , where α is convergence angle between terminal insulators and horizontal line; F_ad is admissible force in support upright; k,α are coefficients depending on weight characteristics of transmission line wires and design-climate conditions. EFFECT: increased stability of the transmission tower with inclined uprights on hinges with flexible insulating transverse and lateral tension ropes by building single damping chain together with phase wires, and rational redistribution of force to supports members that compensate for vertical and horizontal loads, as well as accelerated and simplified installation of the transmission tower. 1 dwg