Unit type assembly and erection method of extra-high-voltage power transmission iron pylon

Abstract

The invention discloses a unit type assembly and erection method of an extra-high-voltage power transmission iron pylon. The unit type assembly and erection method of the extra-high-voltage power transmission iron pylon comprises the following steps of firstly cleaning and arranging a construction site and a construction ground foundation, and transporting pylon materials needed for the assembly and the erection of the iron pylon to a corresponding place; afterwards, assembling and erecting a derrick, raising the derrick, assembling the lower sections of pylon legs, wherein the side width of the cross section of an assembled and erected derrick is 800mm to 900mm; when the derrick is raised, connecting the four corners of the bottom of the derrick onto the foundation by using jacks, fixedly arranging a stay wire and a pulley at the top of the derrick, and guaranteeing that the center of the derrick and a traction ground anchor are on one straight line; assembling and raising the pylon legs, hoisting the derrick, lifting components one by one, hoisting the derrick, slinging a pylon head, mounting an earth wire bracket, slinging cross arms of the iron pylon piecewise one by one, mounting attachments of the iron pylon, and then disassembling the derrick. The unit type assembly and erection method of the extra-high-voltage power transmission iron pylon has the beneficial effects that, by using the unit type assembly and erection method of the extra-high-voltage power transmission iron pylon, technical support for realizing a safe construction, improving the work efficiency and achieving an environmental protection target is provided for an extra-high-voltage experiment and demonstration project.

Description

technical field [0001] The invention relates to a unitary assembling method of an ultra-high voltage transmission iron tower. Background technique [0002] At present, research on the erection process of UHV iron towers is rare in the existing technology, and there is little reference in the existing technology. A large winch is required to adjust the amplitude of the rocker arm so that the tower is installed in place, and the number of hoistings is high, the amount of high-altitude work is large, 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 position is far away from the center of the tower. Selecting a pole with an appropriate length and lifting weight can meet the requirements of greater hoisting weight and lon...

AI Technical Summary

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