Special tool of live line work for replacing rectilinear insulator string of large-section double multiple wire

Abstract

The invention discloses a special tool of live line work for replacing a rectilinear insulator string of a large-section double multiple wire, which comprises an insulated wire lifting rope, an insulated rope pulley adjuster, wire hooks, a nut screw-rod rope tensioning device and a fixed base, wherein the fixed base is sheathed on a screw rod of the nut screw-rod rope tensioning device and moves relative to the screw rod; the lower end of the screw rod is connected with the insulated rope pulley adjuster; the insulated rope pulley adjuster is provided with a fixed pulley; after the wire lifting rope bypasses the fixed pulley of the insulated rope pulley adjuster, both ends of the wire lifting rope are provided with the wire hooks; and the fixed base is provided with a positioning locking device matched with cross arm angle iron. The insulated tool has the advantages of good electric properties, high mechanical strength, high safety factors and vertical arrangement, and is suitable for 220kV double multiple wires, rectilinear single and double string insulators of which the interval between the upper strand and the lower strand is 600 mm, and various other 220kV rectilinear type.

Description

technical field [0001] The invention relates to a tool for replacing wire insulator strings with electricity, in particular to a special tool for replacing the whole string of insulators with large cross-section double-split wires with electricity. Background technique [0002] With the rapid development of the social and national economy, the demand for electricity consumption in urban and rural areas has grown rapidly, and the line load of the 220kV power grid has also continued to rise. Due to the increasingly tight line corridors, 220K lines are currently in operation, and double circuits on the same pole and LGJ-630mm are generally used. 2 Large cross-section double-split conductors, arranged vertically; the spacing between the upper and lower sub-wires is 600mm. Compared with the previously designed 220KV line, the cross-section of the wires is more than doubled and the vertical load is heavy. The vertical spacing between the upper and lower sub-wires is increased by 20...

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Problems solved by technology

[0002] With the rapid development of the social and national economy, the demand for electricity consumption in urban and rural areas has grown rapidly, and the line load of the 220kV power grid has also continued to rise. Due to the increasingly tight line corridors, 220K lines are currently in operation, and double circuits on the same pole and LGJ-630mm are generally used. 2 Large cross-section double-split conductors, arranged vertically; the spacing between the upper and lower sub-wires is 600mm. Compared with the previously designed 220KV line, the cross-section of the wires is more than doubled and the vertical load is heavy. The vertical spacing between the upper and lower sub-wires is increased by 200mm. The tool for the string cannot be applied, and an insulation string replacement tool suitable for the new 220kV large-section double-split conductor must be developed

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