Roller deflected liner device for pipe welding

Abstract

The invention discloses a roller deflected liner device for pipe welding, and mainly aims to provide a roller deflected pipe welding auxiliary tool for medium/small-caliber pipe welding for improvingthe welding quality. The roller deflected liner device for pipe welding is characterized by comprising a liner roller part, a support ejecting part, a long cylinder rotating part and a collection andseparation part, wherein the liner roller part comprises an annular liner, a liner cylinder frame, a bearing and a retainer ring; the support ejecting part comprises a tripod, a ball base cylinder, adowel pin, a steel ball, a small circular pad and a ball base spring; the long cylinder rotating part comprises a positioning cylinder, a long support cylinder and a rocking handle, and is used for rotating a driving device; and the collection and separation part comprises a collection wheel frame, a pin shaft, a support wheel, a wheel frame spring, a pull rope and a pull ring, is used for controlling the device support form, and realizes bonding of the annular liner on the pipe wall or separation from the same. The device blocks a welding groove by using bonding of the annular linear on the inner wall of a steel pipe through eccentric rolling to form a micro-convex welding line; and the bearing strength of the welding line is high.

Description

technical field [0001] The invention relates to a pipeline welding auxiliary tool, in particular to a roller deflection liner device used for welding small and medium-diameter pipelines to improve welding quality. Background technique [0002] The application of welding backing can greatly improve the welding quality. At present, pipe welding counterparts with gasket parts have been developed at home and abroad, and the gasket technology is applied to the welding process of large-diameter pipelines. However, due to the narrow radial space, small and medium-diameter pipes cannot be fitted into pipe welding counterparts with complex structures. In recent years, there are some simple devices for sealing the welding groove of pipelines with small block gaskets, but these block gaskets cannot have shallow arc grooves, and the weld seam is straight instead of slightly convex. Bearing strength is low. Therefore, in the small and medium-diameter pipeline welding process, the curr...

AI Technical Summary

Problems solved by technology

However, due to the narrow radial space, small and medium-sized pipes cannot be fitted into pipe welding counterparts with complex structures.

In recent years, there are some simple devices for sealing the welding groove of pipelines with small block gaskets, but these block gaskets cannot have shallow arc grooves, and the weld seam is straight instead of slightly convex. low bearing strength

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