Extra-high voltage large-span iron tower assembling method

Abstract

The invention discloses an extra-high voltage large-span 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, arranging a construction site, namely arranging a ground anchor, performing pole foundation construction, and arranging main material single pieces and tower sheets of an assembled iron tower body on the ground; 2, assembling a pole, mounting a hoisting system, and hoisting iron tower legs, wherein the assembled pole is a spinning self-elevating ground pole which is provided with horizontal double arms and a hydraulic downward jacking stock; 3, lifting the pole, hoisting the iron tower body section by section, and finally hoistingiron tower cross arms one by one in a segmentation mode; and 4, mounting iron tower accessories, disassembling the pole, and finally overhauling and self-checking to finish the construction. 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 technique of a transmission and transformation power line, in particular to a method for assembling an ultra-high voltage large-span iron tower. Background technique [0002] Research on the erection process of UHV iron towers is rare in the existing technology. Due to the large size of UHV large-span iron tower components, heavy hoisting, and difficult installation, it is difficult to learn from the existing technology. The difficulty of its construction lies in holding It is very inconvenient to install and dismantle the boom of the pole, the lifting weight is large, and a large hoist is required to adjust the amplitude of the rocker to make the tower parts installed in place, and the number of hoistings is large, the workload at high altitude is large, unsafe, and the stability of the hoisting system is difficult. ensure. Contents of the invention [0003] The purpose of the present invention is to solve th...

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Problems solved by technology

[0002] Research on the erection process of UHV iron towers is rare in the existing technology. Due to the large size of UHV large-span iron tower components, heavy hoisting, and difficult installation, it is difficult to learn from the existing technology. The difficulty of its construction lies in holding It is very inconvenient to install and dismantle the boom of the pole, the lifting weight is large, and a large hoist is required to adjust the amplitude of the rocker to make the tower parts installed in place, and the number of hoistings is large, the workload at high altitude is large, unsafe, and the stability of the hoisting system is difficult. ensure

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