Steel tube tower main material linking device

Abstract

The invention discloses a steel tube tower main material linking device. The steel tube tower main material linking device comprises an upper joint and a lower joint which are sleeved and fixed with each other, wherein at least one positioning key is arranged between the upper joint and the lower joint. According to the device, a steel tube tower main material linking way which is safe, reliable, convenient for construction and relatively low in cost is adopted, and components can be realized through simple mechanical processing.

Description

technical field [0001] The invention relates to a connecting device for the main material of a steel pipe tower of a power transmission line, which is an innovation to the ordinary flange bolt connection method. Background technique [0002] In transmission lines, especially UHV lines, flanges and high-strength bolts are mostly used to connect the main materials of steel pipe towers. The cost of flange processing and manufacturing is high, and the fastening of high-strength and large bolts requires a large torque value, and special electric tools must be used. It can only be completed, and it is very difficult to fasten when working at high altitudes; high-strength bolts are not only costly, but also have some problems in the process of application. These problems may be caused by unreasonable layout of design bolts and too small stress margin, or by unstable raw materials and large discreteness, or by heat treatment, rust removal, and hot-dip galvanizing processes during pr...

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Problems solved by technology

[0002] In transmission lines, especially UHV lines, flanges and high-strength bolts are mostly used to connect the main materials of steel pipe towers. The cost of flange processing and manufacturing is high, and the fastening of high-strength and large bolts requires a large torque value, and special electric tools must be used. It can only be completed, and it is very difficult to fasten when working at heights; high-strength bolts are not only costly but also have some problems in the process of application

These problems may be caused by unreasonable layout of design bolts and too small stress margin, or by unstable raw materials and large discreteness, or by heat treatment, rust removal, and hot-dip galvanizing processes during processing. Unreasonable, or caused by the unreasonable tightening sequence and torque control during the construction process of the construction unit, due to these uncertain factors, there are certain hidden dangers in the safe production of steel pipe towers for transmission lines

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