Inspection device for indirect weld seam of polygonal pipe

Abstract

The invention discloses an internal connecting weld seam detecting device for polygonal pipes. Each polygonal pipe is provided with N inner wall faces, the weld seam detecting device comprises a plurality of sensor supports (23) used for detecting internal connecting weld seams of the polygonal pipes (1), N-1 or N weld seam detecting sensors (24-27) are installed on the sensor supports, and all the weld seam detecting sensors can face toward the corresponding inner wall faces of the polygonal pipes in a cavity of each polygonal pipe one to one. The detecting device can detect weld seams on all the inner wall faces conveniently and reliably, detect the inner wall faces with the high-frequency weld seams formed one by one and position the inner wall faces, so that labor intensity of workers is reduced, and detection reliability and efficiency are high. The internal connecting weld seam detecting device is further applied to automatic assembly line work, and the polygonal pipes passing detection are subsequently and uniformly rotated and positioned through an automatic mechanism, so that the directions of the wall faces, with the high-frequency weld seams (10), of the polygonal pipes are uniform, manual operation is omitted, and low efficiency is avoided.

Description

technical field [0001] The invention relates to a weld seam detection device, in particular to a weld seam detection device specially used for detecting high-frequency weld seams of polygonal pipes such as square pipes. Background technique [0002] As the main chord of the standard section of the tower crane or the main chord of the boom, the square tube is bent into a square by a single steel plate, and is butt jointed by a high-frequency weld at the center line of one of the square inner walls. . Therefore, a high-frequency weld is formed in any one of the inner wall faces in the axial direction. Moreover, when the main chord of the standard section of the tower crane or the main chord of the boom is formed, when the incoming square tube as the raw material is bundled, the direction of the wall surface of the square tube with the high-frequency weld is inconsistent. Therefore, in the actual production of standard joints, it is necessary to manually confirm the orientati...

AI Technical Summary

Problems solved by technology

Otherwise, if the direction of the high-frequency weld seam of the square tube is abnormal, it will affect the assembly and welding of the reinforcement plate in the standard section, and at the same time cause a safety hazard to the use of the tower crane, resulting in the repair or scrapping of the standard section chord

[0003] However, at present, the high-frequency welds of the opposite pipe are only manually confirmed and the orientation of the welds is adjusted one by one, which requires high self-discipline of personnel, and is prone to missed inspections, resulting in waste products and unstable inspection quality

Moreover, the square tube is heavy and the workload is heavy, which makes the labor intensity of the workers high, or the use of driving or fork turning is inefficient.

At the same time, the manual detection method is obviously more difficult to meet the production requirements of the automated assembly line

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