Portable spiral pipe welding machine

Abstract

The invention discloses a portable spiral pipe welding machine, and belongs to the technical field of spiral pipe welding machines. The portable spiral pipe welding machine comprises a portable box, and an adjustable unwinding frame is arranged in the portable box; a fixing base is arranged at one end of the portable box, and a bending device is arranged on the fixing base, and comprises a bending mechanism, a material guiding mechanism and a shaping mechanism; and a welding assembly is arranged on the side, away from the material guiding mechanism, of the fixing base. Compared with the prior art, the welding machine has the beneficial effects that the structure is simple, a hot-rolled steel plate is stored through the unwinding frame; the hot-rolled steel plate guided according to a certain angle is bent into a certain radian through the bending mechanism, and then the hot-rolled steel plate is guided to the shaping mechanism through the material guiding mechanism; the hot-rolled steel plate is shaped into a spiral tubular structure through the shaping mechanism; the plate is welded into the spiral welded pipe through the welding assembly, and the coiled hot-rolled steel plate is machined into the spiral welded pipe at the construction site; a large amount of transportation space and storage space can be saved, and the problems of pipe storage and conveying are solved; and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of spiral welded pipe machines, in particular to a portable spiral welded pipe machine. Background technique [0002] Spiral welded pipes are produced by hot-rolled coils. The rolling process of hot-rolled strip mills has a series of advantages, and has the ability to obtain metallurgical technology for producing high-quality pipeline steel. Since the rolling direction of spiral welded pipe coils is not perpendicular to the axis of the steel pipe (The clamping solution depends on the helix angle of the steel pipe), and the rolling direction of the steel plate of the straight seam steel pipe is perpendicular to the axis of the steel pipe. Therefore, the crack resistance of the spiral welded pipe material is better than that of the straight seam steel pipe. [0003] Spiral welded pipes are mainly used for oil or natural gas pipelines. The low-carbon carbon structural steel or low-alloy structural steel strips ...

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Problems solved by technology

[0004] However, the existing spiral welded pipe machine can also be used to produce some small-diameter pipe fittings. Since the length of the pipe fittings is fixed, and the formed pipe fittings are hollow, it takes up a lot of space, resulting in a large number of small-diameter pipe fittings. At the construction site, a large number of pipe fittings are piled up, and transporting these pipe fittings will also waste a lot of transportation space. If the required pipe fittings can be directly produced directly on the construction site through hot-rolled coils, a lot of transportation costs and stacking space can be saved

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