A welding mechanism for the outer wall of a hull

Abstract

The invention discloses a welding mechanism for an outer wall of a ship body, which relates to the technical field of ship manufacturing. The welding mechanism comprises a support frame, a flexible welding seat, a cleaning mechanism and a cooling mechanism, wherein the support frame is connected to a walking mechanism and can walk along a welding joint on the outer wall of the ship body by means of the walking mechanism. By means of a guide column and a spring, it can be ensured that the distance between a base plate and a welding face is kept constant, in other words, the distance between a welding head and the welding face is constant, the stability of welding quality of the outer wall of the ship body under different curvature conditions is effectively ensured, during welding, the cleaning mechanism and the cooling mechanism which are located on the front side and the rear side are matched, on one hand, rust on the surface of the welding face can be cleaned in advance, the welding quality is further improved, on the other hand, the heat of a welding heat affected area is effectively utilized, air in a heat exchange tube is heated, and used for primary cooling of the welding joint, the cooling speed is reduced, the welding quality is improved, three ways are carried out simultaneously, and the welding efficiency is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a welding mechanism for the outer wall of a ship. Background technique [0002] At present, the welding of the outer wall of the hull is mostly manual welding, which has high technical requirements for workers. During welding, workers need to stand for a long time, which is labor-intensive and prone to safety hazards. It is also difficult to accurately control the welding quality. [0003] Some devices capable of automatic welding have also appeared in the prior art, such as a kind of hull wall-climbing welding device whose Chinese patent publication number is CN103934596B. It can be freely stretched and bent within a certain limit to fit the surface of the hull, and maintain the balanced posture of the equipment mounting base, so that the welding torch can perform welding operations in a stable posture and complete the hull welding work efficiently. Although it...

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Problems solved by technology

Although it realizes the automation of welding, for large hulls, this device cannot ensure that the distance between the welding torch and the welding surface remains constant, resulting in uneven welding quality at various parts of the welding surface with large curvature changes; secondly , because the welding surface of the outer wall of the hull is exposed to the environment, rusting will inevitably occur. If the rust cannot be cleaned before welding, it will also have a certain impact on the welding quality. The traditional method is to use manual or other mechanical pre-welding Cleaning, low efficiency, and high cost; again, because most of the current welding places are outdoors, if the outdoor temperature is low, the cooling rate will increase due to the low temperature, and more welding is likely to occur in the welded part. Stress, at the same time, will also adversely affect the structure after welding

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