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Coaxial extension welding method for steel bars

A welding method and steel bar technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of difficult control of coaxial welding, achieve the effect of convenient and practical operation, and ensure the mechanical performance

Inactive Publication Date: 2012-04-18
中交四公局第二工程有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for coaxial lengthening and welding of steel bars in order to solve the problem that the coaxial welding of steel bars is not easy to control during construction in the current welding of steel bar lengthening. The application of this method can realize the coaxial welding between steel bars conveniently and accurately

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  • Coaxial extension welding method for steel bars
  • Coaxial extension welding method for steel bars
  • Coaxial extension welding method for steel bars

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Embodiment Construction

[0018] The method of the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0019] Before the present invention carries out the coaxial extension welding of two steel bars, a steel bar welding positioner will be made earlier, and its structure is shown in figure 1 , figure 2 , image 3 shown. The specific method is as follows:

[0020] On a steel plate 1, along two parallel straight lines ( figure 1 Two dotted lines in the middle), fixedly set two rows, four reinforcing bar positioning columns 2 in each row, each reinforcing bar positioning column 2 is all perpendicular to the surface of the steel plate 1; the distance between the two rows of reinforcing bar positioning columns 2 is, figure 1 The distance between the two dotted lines in , is equal to the diameter of the bar to be welded.

[0021] Among the four reinforcing bar positioning columns in each row, the distance between the two reinf...

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Abstract

The invention discloses a coaxial extension welding method for steel bars. The method comprises the following steps of: making a steel bar welding positioner; fixedly arranging two rows of steel bar positioning posts on a steel plate along the outer side of two mutually parallel straight lines, wherein four steel bar positioning posts are arranged in each row, each steel bar positioning post is vertical to the surface of the steel plate, and the distance between the two rows of steel bar positioning posts is equal to the diameter of two steel bars to be welded; pre-bending the ends of the two steel bars to be welded according to predetermined angles, respectively placing the two steel bars between the two rows of steel bar positioning posts of the steel bar welding positioner, and butting the pre-bent ends of the two steel bars together, so that the end of one steel bar is just positioned at the pre-bent angle of the other steel bar and the outer surfaces of the pre-bent parts of the two steel bars are closely jointed; and welding along the jointed positions of the ends of the two steel bars. The method can completely ensure the coaxiality and the concentricity of the two extension welded steel bars.

Description

technical field [0001] The invention relates to a welding method for controlling the welding axes of the steel bars on the same straight line in the straight-line steel bar lengthening welding construction, which is mainly used for the main bar lengthening welding construction of bridges and culverts. Background technique [0002] In bridge construction, the spans of bridges are basically greater than 15m, and the factory length of steel bars is generally 9-12m, so they all need to be extended. The welded steel bars are required to be coaxial and concentric to ensure that the steel bars are stressed. However, in the actual construction process of steel bar welding, it is not easy to control the welding of coaxial lines. In addition, factors such as high mobility of construction personnel and uneven technology are prone to deviations, which directly affect the welding quality. Contents of the invention [0003] The purpose of the present invention is to provide a method fo...

Claims

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Application Information

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IPC IPC(8): B23K31/02B23K37/053
Inventor 吴剑波吴瑞君刘正兵王丽锋高强苏建萍周平辉梅志强廖巍刘月艳张倩
Owner 中交四公局第二工程有限公司
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