Assembly welding method for producing large diameter extremely thick steel pipes through rotary walking rail and device thereof

Abstract

The invention discloses an assembly welding method for producing large diameter extremely thick steel pipes through a rotary walking rail and a device thereof. The assembly welding method for producing the large diameter extremely thick steel pipes through the rotary walking rail comprises paving the rail; arranging a waling flat vehicle on the rail; arranging an operational platform which can be extended to the upper end on the exteriors of the steel pipes to be welded on the rail edge; and arranging an automatic welding machine which is controlled through a computer on the operational platform. The device for producing the large diameter extremely thick steel pipes through the rotary walking rail comprises the computer, the rail, the automatic welding machine, a walking platform, an automatic welding vehicle and the operational platform. The assembly welding method for producing the large diameter extremely thick steel pipes through the rotary walking rail has the advantages of enabling welding of the large diameter extremely thick steel pipes in construction fields to be convenient and good in quality and being feasible and safe. The device for producing the large diameter extremely thick steel pipes through the rotary walking rail has the advantages of being simple and practical in structure, high in construction speed, time and labor saving, low in construction cost, good in construction quality and good in energy conservation and environmental protection effect.

Description

technical field [0001] The invention belongs to a method and a device for manufacturing a large-diameter extra-thick steel pipe by assembling and welding a rotating track. Background technique [0002] In the construction of roads, bridges, and culverts in mountainous areas, it is often necessary to weld on-site large-diameter extra-thick steel pipes with a section of more than 10 meters, a standard section of 2.8 meters, a plate thickness of more than 50 mm, and a diameter of 3000 mm. This kind of large-diameter and extra-thick steel pipe is bulky and heavy. Even in a large-scale manufacturing plant with complete equipment, it takes a lot of manpower and material resources to weld two steel pipes. Usually, the steel pipes are first butt-connected on the flat ground with a gantry crane, and then a welding scaffold is built on the butt joint of the two steel pipes, and several welders complete the welding of the two steel pipes on the scaffolding. This traditional method of ...

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Problems solved by technology

This traditional method of welding large-diameter and extra-thick steel pipes is not only difficult in construction, slow in construction speed, time-consuming and laborious, and high in construction costs, but also low in construction quality, and it is difficult to ensure the welding quality and the smoothness and axis of the steel pipe after welding. , it is more difficult to ensure the verticality of the steel pipe installation, and it is difficult to control the uniformity of the vertical weld gap

In addition, this kind of construction site welding of large-diameter and extra-thick steel pipes is carried out in a harsh construction environment in mountainous areas, and it is even more difficult to guarantee the construction quality of large-diameter and extra-thick steel pipe welding

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