A method for installing a wine glass-shaped iron tower of an UHV transmission line

Abstract

An installation method for a cup type iron tower of an ultra-high voltage transmission line comprises the steps of making preparations before construction; assembling and erecting a main holding pole; assembling and erecting a tower leg on tower footing; placing a single main material part and a tower piece for assembling an iron tower body on the ground, lifting the main holding pole and assembling the tower body in a hoisting mode one by one; lifting the main holding pole and hoisting a lower bent arm and an upper bent arm of the iron tower; hoisting a middle cross arm, assembling an auxiliary holding pole on the ground and hoisting the auxiliary holding pole; assembling cross arms on the outer sides on the ground and hoisting the cross arms on the outer sides through the auxiliary holding pole; installing a ground wire bracket and an iron tower accessory; carrying out overhaul and self-inspection to eliminate defects; and dismantling the auxiliary holding pole and the main holding pole, and then finishing the construction. According to the installation method, the problem that a common holding pole is difficult to hoist in position when hoisting parts such as the cross arms on the outer sides are far away from the center of the iron tower is solved, the probability of personnel and machinery injury in the hoisting process of the cross arms on the outer sides of the bent arms is lowered, the overall construction efficiency of the cup type iron tower is improved, and the construction quality of assembling the tower is not influenced.

Description

technical field [0001] The invention relates to a power line construction technology, in particular to a method for installing a wine glass-shaped iron tower of an ultra-high voltage transmission line. Background technique [0002] During the erection and construction of iron towers for 1000kV transmission line engineering, the outer cross arm of the wine glass angle steel tower is far away from the center of the tower, and the weight is relatively heavy, and the top of the general tower holding pole is not much higher than the iron tower cross arm, resulting in the lifting of the above part It is difficult to get in place; forced to be in place is likely to cause delays in construction time, and dangers to personnel and machinery are likely to occur. [0003] The weight of the UHV iron tower increases, the longitudinal height increases, and the size and shape of the tower window will inevitably lead to an increase in the weight and length of the hoisting parts, and the hois...

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Problems solved by technology

[0004] In view of the above shortcomings, the present invention provides an installation method of a wine glass-shaped iron tower for UHV transmission lines, which is used to solve the problem of difficulty in hoisting in place with ordinary poles when the hanger is far away from the center of the iron tower

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