Semi-automatic welding equipment for outer walls of hulls

Abstract

The invention discloses semi-automatic welding equipment for outer walls of hulls, and relates to the technical field of shipbuilding. The semi-automatic welding equipment comprises a supporting frame, a flexible welding seat, a cleaning mechanism, a cooling mechanism, a base and a flexible fitting assembly. According to the semi-automatic welding equipment, by the aid of guiding columns and springs, the distance between a base plate and the welding surface can be kept constant, that is, the distance between a welding head and the welding surface is constant, and the stability of the welding quality of the outer walls of the hulls under different curvature conditions is guaranteed effectively; at the same time of welding, through cooperation with the cleaning mechanism and the cooling mechanism on the front and back sides, on one hand, rust on the surface of the welding surface can be cleaned in advance, the welding quality is further improved, on the other hand, the heat of the welding heat affected zone is utilized effectively, air in a heat exchange pipe is heated and is used for preliminary cooling of a welding joint, the cooling speed is reduced, the welding quality is improved, three operations are performed synchronously, and thus the welding efficiency is improved remarkably.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a semi-automatic welding device 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. ...

AI Technical Summary

Problems solved by technology

Although it realizes the automation of welding, for large hulls, it is very difficult to realize the precise driving of the welding device, and the welding accuracy is difficult to guarantee; secondly, the device cannot ensure that the distance between the welding torch and the welding surface remains constant. As a result, on the welding surface with large curvature changes, the welding quality of each part is uneven; thirdly, because the welding surface of the outer wall of the hull is exposed to the environment, it is inevitable that rust will occur. If the rust cannot be cleaned before welding, It will also have a certain impact on the welding quality. The traditional way is to use manual or other mechanical pre-cleaning, which is low in efficiency and high in cost; finally, since most of the current welding places are outdoors, if the weather with low outdoor temperature , due to the increase of cooling rate due to low temperature, more welding stress is likely to occur in the welded part, and at the same time, it will also have an adverse effect on the welded structure

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