Method suitable for tension stringing of ultra-high voltage wire

Abstract

The invention discloses a tension wire-laying method applies to ultra-high voltage electric wires: (1) four <second-line stretching all-in-one machines> are arranged in a hauling field as main hauling devices, four <second-line tension machines> are arranged in a tension field, two sets of wire-laying tackles that are independent to each other are hanged on the iron tower per phase; (2) in the earlier period 8 lead traction ropes are laid, every four traction ropes go through four auxiliary sliding wheels arranged on one set of wire-laying tackle and haul and lay an eight-multiple lead in theform of <one haul 1>, and realize synchronous laying of leads through four <second-line tension machines> and four <second-line stretching all-in-one machines> as hauling devices; and (3) when the eight-multiple lead reaches the wire-laying tackle, a trigger running board touches a trigger mechanism on the wire-laying tackle, which is used to make the auxiliary sliding wheel on the same tackle drop to the position lower than the main sliding wheel of the wire-laying tackle, and make the eight-multiple lead be synchronously laid by the main sliding wheels on the two sets of wire-laying tackles. The method can meet the tension wire-laying demand of ultra-voltage electric wires without long ton main hauling equipment.

Description

technical field [0001] The invention relates to a wire-laying method, which is suitable for 800-1000kV ultra-high voltage wire tension wires. Background technique [0002] Since the 1960s, the United States, the Soviet Union, Japan, Canada, Italy and other countries began to study 1000kV UHV AC transmission technology. Japan began to build 1000kV lines in 1988, with a total length of 430km. [0003] At present, the commonly used construction methods for 1000kV UHV project tension pay-off are "one lead 8 (or 4+4)", 2× "one lead 4" and other methods, which are used for simultaneous pay-off of single-phase eight-split lines. [0004] "One pull 8 (or 4+4)": that is, two sets of 4-wire tension machines are set up in the tension field, one traction machine is used in the traction field, and a set of nine-wheel pay-off blocks are suspended on each phase of the tower, through a traction rope and Eight wires run on the board, and eight sub-conductors are laid out at the same time. ...

AI Technical Summary

Problems solved by technology

The use of rubber-like flexible wheel linings with reduced hardness can effectively protect the surface quality of the wires, but the traction rope that passes first will cause wear to the pulley pulley, and the worn pulley will wear the wires again.

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