Pipeline jointing device

Abstract

The invention discloses a pipeline jointing device comprising a main frame, an upper rolling shaft, a lifting mechanism, support legs, lower parallel rolling shafts, a chain plate structure and a chain plate adjusting structure; the upper parallel rolling shaft is arranged above and connected with the main frame; the support legs are positioned below the main frame and the upper ends of the legs are connected with the main frame; the lower ends of the support legs are connected with the lower parallel rolling shafts; the chain plate adjusting mechanism is arranged above and connected with the main frame; and the chain plate structure is connected with the chain plate adjusting mechanism and the lower parallel rolling shafts. As the chain plate structure is arranged on the jointing device by the connection with the chain plate adjusting mechanism and the lower parallel rolling shaft, the chain plate structure can be easily separated from the main frame to facilitate carrying and assembling, and the application of the construction site; chain plates with adjusting holes are arranged in the chain plate structure, so the precision of pipeline jointing is ensured; and the pipeline jointing device can be used as both an inner jointing device and an outer jointing device and has a wide application range.

Description

technical field [0001] The invention relates to the field of pipeline assembly and welding assurance, in particular to a pipeline matching device. Background technique [0002] The counterpart construction process of pipeline welding is often realized through pipeline counterparts. At present, commonly used counterparts include fixed card type external counterparts, chain type external counterparts and internal counterparts. Among them, the fixed card-type external counterpart has a simple structure, but different types of counterparts need to be used for pipes with different outer diameters, which is cumbersome to use; the chain-type external counterpart has a disturbing structure that not only has a certain strength, but also can Free bending in one direction, so that the pipeline is evenly stressed, but the winding structure is prone to deformation during the force application process, and it is difficult to ensure the concentricity and misalignment of the pipeline durin...

AI Technical Summary

Problems solved by technology

Among them, the fixed clip-type external counterpart has a simple structure, but different types of counterparts need to be used for pipes with different outer diameters, which is cumbersome to use; the chain-type external counterpart has a disturbing structure that not only has a certain strength, but also can Free bending in one direction, so that the pipeline is evenly stressed, but the winding structure is prone to deformation during the force application process, and it is difficult to ensure the concentricity and misalignment of the pipeline during the welding process, which affects the alignment accuracy of the pipeline; The alignment accuracy of the inner mouthpiece is generally higher than that of the outer mouthpiece, but the volume of the inner mouthpiece is generally large and the cost is high, which makes it difficult to popularize it in the alignment of the pipeline welding joints in the petrochemical plant

In addition, the matching devices currently on the market use manual assembly, which is not only inefficient, but also the matching accuracy is not high, it is difficult to adjust the slightly wrong edge, and the steps of adjusting the levelness of the flange surface are cumbersome, which is easy to affect the matching accuracy of the pipeline

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