Power transmission tower foot welding process

A welding process, iron tower technology, applied in the direction of welding equipment, manufacturing tools, workpiece edge, etc., can solve the problems of long interval time, low welding efficiency, stress concentration, etc., to prevent stress concentration, good welding quality, prevent heat cumulative effect

Active Publication Date: 2019-07-16
中电建武汉铁塔有限公司
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Problems solved by technology

In this way, when performing welding of a single weld, due to the short interval between three-layer welding, it is easy to form heat accumulation and affect the welding effect; secondly, because each welding layer is completed, the welding equipment needs to be reset. Then st

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  • Power transmission tower foot welding process
  • Power transmission tower foot welding process
  • Power transmission tower foot welding process

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0025] Such as Figure 4~5 As shown, the tower foot of the present invention includes a base A, a first main rib B, two second main ribs C and four slave ribs D, wherein the first main rib B is vertically welded on the surface of the base A, and the other two A second main rib C is arranged perpendicular to the base A and the first main rib B and is welded with them. Two second main ribs C are respectively arranged on both sides of the first main r...

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Abstract

The invention provides a power transmission tower foot welding process. The mode that three welding passes are implemented in a staggered manner for two welding seams at symmetrical positions is matched; furthermore, the welding directions of base layers, surface layers and packing layers are the same; welding equipment does not need to be reset, and therefore, the welding efficiency is high; thetwo welding seams at the symmetrical positions are adopted; and firstly, the base layers of the two welding seams are welded, then, the packing layers of the two welding seams are welded, and finally,the surface layers of the two welding seams are welded. In this way, the time interval between the two symmetrical welding seams can be shortened, and stress concentration is prevented; in addition,staggered type welding is conducted between the two welding seams; the time interval between every two welding layers is long, heat accumulation is prevented, and the welding quality is higher; and for four welding seams at the staggering positions of main rib plates, three welding passes are completed in a symmetrical and alternate manner, and stress concentration and heat accumulation can be prevented.

Description

technical field [0001] The invention relates to the field of electric transmission towers, in particular to a welding process for the feet of electric transmission towers. Background technique [0002] The transmission tower is a towering structure, mainly made of steel structure, which is very sensitive to inclination, deformation, and welding strength, and has high requirements for uneven settlement of the foundation. During the welding process, false welding or welding residual stress and deformation may cause the transmission tower to deflect or even overturn. However, since the residual stress and deformation caused by temperature changes after welding have always been a difficult problem to be solved in the welding industry, the distribution of welding temperature field has always been a hot spot for domestic welding researchers. [0003] In the existing welding process of the tower foot of the transmission iron tower, when welding the rib plate and the bottom plate, ...

Claims

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Application Information

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IPC IPC(8): B23K31/02B23K33/00
CPCB23K31/022B23K33/004
Inventor 胡红中胡林波王朋
Owner 中电建武汉铁塔有限公司
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