Welded pipe end straightness online detection device

Abstract

The invention discloses a welded pipe end straightness online detection device, belonging to the technical field of welding control, and comprising a detection mechanism, a detection arm, a pedestal mechanism and a base mechanism, wherein the pedestal mechanism is arranged at the upper part of the base mechanism, the detection arm is arranged at the side surface of the pedestal mechanism, the two ends of the detection arm are respectively connected with the detection mechanism and the pedestal mechanism, the detection mechanism is positioned right above a welded pipe to be detected, and the detection mechanism, the detection arm and the pedestal mechanism are all positioned at the same side of the base mechanism. The invention is the online detection device which can substitute a manual visual inspection method to detect, and realize end straightness online automatic detection of welded pipes with different specifications.

Description

technical field [0001] The invention relates to a device in the technical field of welding control, in particular to an online detection device for the straightness of a welded pipe end with an aspect ratio greater than 30. Background technique [0002] With the growth of energy demand, there is an increasing demand for high-quality welded pipes at home and abroad. After the heat treatment process of welded pipe production, the straightness of both ends of the welded pipe has a great influence on the subsequent processing procedures and the quality of the final product of the welded pipe. However, at present, domestic related enterprises mostly use manual visual inspection method to detect the straightness of welded pipe ends, that is, the workers hold the riding gauge, stick the riding gauge to the surface of the welded pipe, then turn the welded pipe, and obtain the bending value of the welded pipe end through the reading of the dial indicator , due to the low efficiency ...

AI Technical Summary

Problems solved by technology

Although this technology solves the problem of automatic detection of the straightness of workpieces with large length-to-diameter ratios, the workpiece is still during the detection process, and the bending of the workpiece is usually multi-dimensional, which cannot guarantee the space between the axis line of the workpiece and the collimation system during measurement. The virtual reference line coincides, so the positioning error caused by the bending of the workpiece will be brought into the measurement result, which will reduce the reliability of the measurement result

In addition, because the diameter of the welded pipe is much larger than that of the sucker rod, the test stand can only be used to test the straightness of smaller diameter workpieces

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