Auxiliary hoisting device for outer side cross arm of power transmission line iron tower shaped like Chinese character 'Gan'

Abstract

The invention discloses an auxiliary hoisting device for an outer side cross arm of a power transmission line iron tower shaped like a Chinese character 'Gan'. The hoisting device is arranged on a middle cross arm of the iron tower shaped like the Chinese character 'Gan', and the cross arm is hoisted through an acting component of a triangular structure and a pulley assembly. The auxiliary hoisting device can be directly fixed to the top of the outer side of the middle cross arm of a wire, the outer side cross arm part of the iron tower shaped like the Chinese character 'Gan' is directly hoisted through large-angle inclination, the problem that when hoisting pieces such as the outer side cross arm are away from the center of the iron tower, a common holding pole is difficult to hoist in place is solved, the probability of personnel and mechanical injuries in the outer side cross arm hoisting process is reduced, the overall construction efficiency of the iron tower shaped like the Chinese character 'Gan' is improved, and the tower assembling construction quality is not affected. According to the auxiliary hoisting device, the problems that the outer side cross arm of the ultra-high voltage engineering angle steel tower shaped like the Chinese character 'Gan' is too long and too heavy, and a main holding pole cannot be hoisted integrally can be effectively solved, and the assembling task of + / -800kV straight towers shaped like the Chinese character 'Gan' in high and large mountain areas can be completed safely and efficiently with high quality.

Description

technical field [0001] The invention relates to the technical field of power supply auxiliary equipment, in particular to an auxiliary lifting device for cross-arms on the outside of a dry-shaped iron tower of a power transmission line. Background technique [0002] At present, in the erection and construction of iron towers in the Yazhong-Jiangxi ±800 kV UHV DC transmission line project, the outer cross arms of the dry-shaped angle steel towers are far away from the center of the tower, so the weight is relatively large, and the top of the poles of the general towers is higher than the There are not many iron tower cross arms, which makes it difficult to lift the above parts into place; forcing them into place will easily cause delays in construction time, and dangers to personnel and machinery will easily occur. According to the power construction safety work regulations, the inclination angle of the poles used for ordinary towers should not exceed 15°, and if you want to ...

AI Technical Summary

Problems solved by technology

Direct hoisting of the outer cross-arm part of the curved arm of the iron tower through a large-angle inclination solves the problem of difficulty in hoisting in place with ordinary poles, reduces the chance of personnel and mechanical injuries during the hoisting of the outer cross-arm, and improves the overall construction efficiency of the dry-shaped angle steel tower. Ensure that the construction quality of the tower group is not affected

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