Pipe fitting method

Abstract

The invention relates to a method for butt jointing of pipe fittings, which comprises the following steps: providing a positioning device, the positioning device includes a guide rail and two hoops arranged at intervals on the guide rail and respectively used to hold two pipe fittings to be connected tightly. The center line of the hoop is parallel to the guide rail; the guide rail includes a connector with two round holes arranged side by side and a first transverse axis and a second transverse axis respectively passing through the two round holes; both hoops include a first hoop body and second hoop body, the first hoop body is fixed on the first horizontal shaft, the second hoop body is fixed on the second horizontal shaft; two pipes to be connected are provided, and the two pipes to be connected are connected from the two embraced The opposite outer sides of the hoop respectively pass through the two hoops and relatively move to the docking position along the guide rail; make the two hoops clamp the two pipes to be connected; connect the two pipes to be connected. The pipe fitting butt jointing method of the present invention can quickly and efficiently complete the accurate butt joint of pipe fittings by one person, reduces personnel investment, provides maximum construction time for the next process, and improves construction efficiency.

Description

technical field [0001] The invention relates to the technical field of pipe fittings installation, in particular to a method for butt joint of pipe fittings. Background technique [0002] When the shield machine drives forward in the tunnel, auxiliary pipelines need to be installed at the back, including water inlet pipes, return pipes, drainage pipes, and bentonite pipes according to the geological conditions. Usually these pipes are made of galvanized steel pipes. These auxiliary pipelines will also be extended with the increase of the length of the tunnel after the machine is advanced. The traditional method is to connect 4 galvanized steel pipes for every 6 meters of advance. [0003] In the previous construction process, since there was no suitable pipe fitting alignment device, three people were usually required to cooperate with each other when connecting the above auxiliary pipelines so that the pipe fitting interfaces could be aligned and installed well, which resul...

AI Technical Summary

Problems solved by technology

[0003] In the past construction process, due to the absence of a suitable alignment device for pipe fittings, it usually takes three people to cooperate with each other when connecting the above-mentioned auxiliary pipelines so that the pipe fittings are aligned and installed properly, which leads to more personnel required for pipeline connection , The alignment efficiency of the pipeline is low, which affects the propulsion efficiency of the shield machine

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