Ultrahigh power transmission line cross-arm side whole-string dead end insulator disengagement and recovery method

Abstract

The invention discloses an ultrahigh power transmission line cross-arm side whole-string dead end insulator disengagement and recovery method, for live-line replacement of an ultrahigh power transmission line dead end insulator string. A corresponding apparatus comprises an upper cap and a lower cap which can perform universal rotation, a cylindrical upper holding rod and a cylindrical lower holding rod which are respectively connected with the upper cap and the lower cap, and a telescoping holding rod which is composed of the upper holding rod and the lower holding rod and can adjust the length. The outer side of the upper holding rod is provided with an axial long tooth bar, the outer side of the lower holding rod is provided with a gear box through a gear box fixation ring, the gear box is internally provided with a pawl, a ratchet and a gear which is driven by the ratchet to drive the long tooth bar at the outer side of the upper holding rod in an engaged mode, through back-and-forth swing of a ratchet wrench arranged outside the gear box, a gear shaft and a gear are driven to rotate, and the gear drives the long tooth bar at the outer side of the upper holding rod and the upper holding rod in an engaged mode to perform axial movement so as to adjust the upper holding rod and the lower holding rod to a needed total length. According to the invention, the disengagement weight during the live-line replacement of the ultrahigh power transmission line dead end insulator string can be reduced, easy live-line single-side replacement of the insulator string is facilitated, and the work efficiency is improved.

Description

technical field [0001] The invention relates to an electric power maintenance device and a method thereof, in particular to a detachment and recovery method of a whole string of tension insulators on the cross-arm side of a UHV (1000KV) transmission line. The detachment and recovery method for replacing the entire string of tension insulators on the cross-arm side of the UHV transmission line can reduce the weight of detachment when the string of UHV strain insulators is replaced with power on, and the fixture is not easy to slip out, reducing the difficulty of work and facilitating The insulator strings can be easily exchanged on one side with electricity to improve work efficiency. Background technique [0002] In the past, extra-high voltage transmission lines, such as 220kV transmission lines, generally used double-split conductors, and the matching insulators also used double-string types. Its live exchange transmission line and its insulator string are important items...

AI Technical Summary

Problems solved by technology

But before the method is used, the phase conductors (that is, 6-8 conductors) must be tightened at the same time, and some specific connecting components, such as connecting plates and special matching fittings, must be used together with the second and second conductors. Cooperate with the anti-winding six pulleys set in the middle of the three-sledge and the second-sled and three-sledge, the connection between each string of tension insulators and the cross-arm needs to be separately equipped with clamps and auxiliary devices, which is inconvenient to operate

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