Extra-high voltage common circuit iron tower assembling method

Abstract

The invention discloses an extra-high voltage common circuit iron tower assembling method, which belongs to the technical field of electric transmission and transformation electric power circuit construction processes. The method comprises the following steps of: 1, performing construction preparation, namely cleaning a construction field, arranging the construction field, preparing a construction ground foundation, and transporting tower materials required by iron tower assembly; 2, assembling a pole, erecting the pole and assembling tower leg lower sections; 3, assembling and erecting towerlegs, lifting the pole, and hoisting iron tower crank arms; and 4, lifting the pole, hoisting a tower head, mounting a ground wire bracket, hoisting iron tower cross arms one by one in a segmentationmode, mounting iron tower accessories and disassembling the pole. The method has the advantages of reducing the working amount of aloft operation, along with a short construction period, a small number of hoisting times and high safety; by the method, safety risks are reduced, required aloft operation personnel is greatly reduced, and labor cost is reduced; and the method has extremely good economic and social benefits.

Description

technical field [0001] The invention relates to a construction technology of a transmission and transformation power line, in particular to a method for assembling an iron tower of an ordinary UHV line. Background technique [0002] The research on the assembly process of UHV iron towers is rare in the existing technology, and it is difficult to learn from the existing technology. The difficulty of its construction is that the installation and removal of the boom holding the pole is very inconvenient. The hoist adjusts the amplitude of the rocker arm so that the tower is installed in place, and there are many hoisting times, a large amount of high-altitude operations, unsafe, and the stability of the hoisting system is difficult to guarantee. Compared with ultra-high voltage line towers, UHV towers increase in weight and vertical height, and changes in the size and shape of tower windows will inevitably lead to increased weight and length of hanging parts, and the hoisting p...

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Problems solved by technology

Selecting a pole with an appropriate length and lifting weight can meet the requirements of greater hoisting weight and longer longitudinal length of the hanger. However, since the pole in the prior art is arranged in the center of the tower position, and the inclination of the pole is limited, the size of the tower window of the iron tower In particular, the increase in the lateral dimension causes the hanger to be far away from the center of the tower, which is a difficult point to be solved in the hoisting scheme

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