A weld flaw detection device

Abstract

The invention discloses a welding joint flaw detection device which comprises a welding joint flaw detection instrument and a boat body wall climbing carrying platform used for placing the welding joint flaw detection instrument. The boat body wall climbing carrying platform comprises two magnetic drive units, four sets of belt tightness adjusting mechanisms, a front beam, a middle beam, a tail beam, four flexible longitudinal bones and a device carrying base. Under the matching of the four flexible longitudinal bones and the four sets of belt tightness adjusting mechanisms, the welding joint flaw detection device can freely stretch, retract and bend within certain limits so as to be attached to the surface of a boat body, the balanced posture of the equipment carrying base is kept, and therefore the welding joint flaw detection device can complete the welding joint flaw detection work of the boat body with a stable posture efficiently.

Description

technical field [0001] The invention relates to a flaw detection device, in particular to a flexible skeleton wall-climbing welding seam flaw detection device. Background technique [0002] At present, the devices used for ship hull inspection work mostly use permanent magnet crawler adsorption technology. Most of these devices have rigid crawler structures and are difficult to achieve frequent curvature changes during movement. It is not strong, so there are two problems: First, the effective contact area between the track and the hull surface decreases when passing through the hull surface with large curvature, such as the fore and stern, bilge and other parts of the ship with large curved surfaces, the device The crawler or driving wheel cannot reach the minimum effective contact area required for normal work with the surface of the hull, thus reducing the adsorption force, causing the entire device to not travel normally, or even a fall accident; second, due to its relat...

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Problems solved by technology

[0002] At present, most of the devices used for ship hull flaw detection use permanent magnet crawler adsorption technology. Most of these devices have rigid crawler structures, and it is difficult to achieve frequent curvature changes during movement. The attachment surface to the hull surface is small, and the adsorption force It is not strong, so there are two problems: first, the effective contact area between the track and the hull surface is reduced when passing through the surface of the hull with a large curvature. The crawler or moving wheel cannot reach the minimum value of the effective bonding area required for normal work with the surface of the hull, thus reducing the adsorption force, causing the entire device to fail to move normally, and even a fall accident; secondly, due to its relatively fixed crawler and internal The structural form, on the surface of the hull with different curvatures and large changes, the equipment carried by the device cannot maintain a good working posture, which affects the quality of the work

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