A fixing device for pipeline welding in building construction

Abstract

The invention discloses a fixing device for pipeline welding in building operations. The fixing device comprises two fixing rings, three or more sliding fasteners and positioning connection bolts. The fixing rings comprise two symmetrically-arranged circular rings and two pin shafts. Each fixing ring is composed of two half ring bodies. The sliding fasteners comprise two sliding blocks, a connecting rod and two puller bolts. Sliding chutes are further formed in the outer edge circumferences of the two fixing rings. The sliding blocks at the two ends of the three or more sliding fasteners are located in the sliding chutes of the two fixing rings correspondingly. The fixing device has the following beneficial effects that the positioned welding process in traditional pipeline butt welding is omitted, the number of welding obstacles is small, operation is easy, and welding quality is greatly improved.

Description

technical field [0001] The invention relates to the technical field of pipeline welding, in particular to a fixing device for pipeline welding in building construction. Background technique [0002] In building construction, for example, in the construction of water supply and drainage pipes, it is often necessary to weld different metal pipes together. [0003] According to different construction objects and welding environments, the pipe fitting fixtures are divided into two types: inner fitting and outer fitting. Due to many obstacles, the outer fitting not only has many welding joints, but also restricts welding and grinding operations, and cannot complete the entire weld. The difficulty of welding increases and the quality of welding decreases. Therefore, it is only used for assembly and positioning, and it is removed after the positioning welding is completed, and then the formal welding is performed. However, with the advancement of welding methods, when using semi-...

AI Technical Summary

Problems solved by technology

However, with the advancement of welding methods, when using semi-automatic and automatic welding such as fully automatic hot wire TIG welding, if traditional external counterparts are used for positioning, tack welding is required. When the tack weld is large, root welding is likely to cause incomplete penetration, Poor fusion; the positioning solder joint is too small, and the strength is not enough to easily cause cracking. The high requirements for positioning welding increase the difficulty of welding

In addition, due to the relatively fixed position of the fastening bolts of the traditional external mouthpiece, it cannot be moved to any position, and the adjustment of the wrong side cannot achieve full coverage, and the quality of the mouthpiece is not easy to guarantee

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