RU94021270A - ELECTRIC POWER SUPPORT - Google Patents

Claims (1)

The invention relates to energy construction, in particular to the structures of fast-mounted Y-shaped hinge supports of high voltage transmission lines. The objective of this invention is to increase the stability of the support with inclined pillars on the hinges with a flexible insulating crosshead and side braces by creating a single damping circuit with phase wires and rational redistribution of effort in the support elements, compensating for the vertical and horizontal loads, as well as acceleration and simplification of the support installation. This task is achieved by the fact that the support is additionally equipped with two pairs of side links 6 diverging downwards, forming with single side drawbars 5 and flexible insulating cross member 2 with phase wires 4, a single damping circuit, rationally redistributing all the loads on the support elements and releasing racks along and across power line axis. Structurally, the upper ends of paired braces 6 are attached to the tops of the uprights 1, and the lower divergent ends of these braces of each rack are attached to separate lateral hinges 7 and 8 mounted on a common elongated foundation 12 located superficially along the axis of the transmission line. The hinges 7 of the braces 6 are placed on opposite sides of the support hinge 10 of the rack 1 on the same horizontal axis with it as are the hinges 8 with the hinge 9 of the other rack 1, with the hinges 7 and 10 of one rack 1 being offset from the hinges 8 and 9 of the other racks vertically and horizontally. All hinges are bolted and mounted in pairs on the shoes 11 attached with clamps to the foundation 12. When mounting, the supports of the rack 1 are alternately fixed with bolt hinges 9 and 10 to the shoe 11 and laid one on top of the other side of the foundation 12, which reduces the size of the installation site. Then, lateral delays 5, paired delays 6, the ends of the screw cross member 2 with insulators 3 and phase wires 4 attached to it are attached to the tops of the uprights 1, and the lateral end of the lateral delays 5 are anchored by bolting hinges 7 and 8 from the side of the rack 1. The end of the other side braces 5 is attached to the winch and lift the support racks and adjust the slack of the insulating yoke 2 with wires 4. The flexible yoke 2 is made of polymer insulators 3, and its weight is set between the racks 1 by the lateral delays 5 within the limits of the optimal value of the internal descent angle between the extreme insulators 3 and the horizontal. The use of hinge paired braces 6 and the installation of a sag of flexible insulating yoke 2 according to the optimum value of the descent angle between the extreme insulators 3 and the horizontal simplifies and speeds up the mounting of the support. The optimal angle of descent between the outer insulators and the support is determined from the ratio

where α is the descent angle between the extreme insulators and the horizontal; F _{with t} - the allowable force in the support strut; K and a are coefficients depending on the magnitude of the load on the wires. 1 il.