A ship multi-plate assembly welding structure and welding method

Abstract

The invention discloses a multi-plate assembly and welding structure of a ship and a welding method, wherein the multi-plate assembly and welding structure of a ship includes an inner bottom plate, a bottom edge longitudinal quilting, a bilge inner shell plate and a bracket plate, and the bottom edge longitudinal quilting and the bilge inner shell plate are respectively Welded on opposite sides of the inner bottom plate, the inner bottom plate has a plate body and a connecting part, the bottom edge longitudinal quilting is arranged at the position where the plate body and the connecting part are connected, the plate body is arranged horizontally, and the connecting part faces the side where the bottom edge longitudinal quilting is located Bending, the toggle plate is connected at the end of the connection part away from the plate body. By bending the connecting part at the end of the inner bottom plate toward the side where the longitudinal quilting of the bottom edge is located, the space between the connecting part and the inner shell plate of the bilge is increased, and more operating space is reserved for the welding of the bracket, which improves the The welding quality of the bracket can reduce the welding difficulty and improve the welding quality without sacrificing the cargo tank capacity on the side of the bilge inner shell and inner bottom plate away from the longitudinal quilting of the bottom edge.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a ship multi-plate assembly welding structure and a welding method. Background technique [0002] There is a multi-plate assembly and welding structure at the junction of the bottom ballast tank and the bilge ballast tank of the ship, such as figure 1 As shown, this multi-plate specifically refers to the inner bottom plate 1', the bracket plate 4', the bottom side longitudinal quilting 3', the inner shell plate of the bilge 2' and the rib plate of the bilge 5', and the bracket plate 4' is used to connect the inner bottom plate 1 ' and the bilge floor 5', the bracket 4' and the inner bottom plate 1' are welded in the form of butt welding, the bracket 4' and the bilge floor 5' are fillet welded, the bilge inner shell plate 2' and the inner bottom plate 1′ and bottom edge longitudinal quilting 3′ three plates are required to be assembled at the same point where the center lines of t...

AI Technical Summary

Problems solved by technology

[0004] When the angle between the bilge inner shell plate 2' and the inner bottom plate 1' is small, the angle on one side of the obtuse angle between the two is too large, and more weld metal needs to be filled, and the welding workload is large, and the filling amount is larger. Too much will inevitably lead to greater welding heat, which will have an adverse effect on the material properties of the plate. After the weld is cooled, it will also cause greater structural deformation, which is not conducive to precision control.

However, the angle on one side of the two acute angles will be smaller, and welding is difficult. The end of the welding equipment (such as a welding torch) has a certain size and cannot reach the tip of the angle, resulting in poor welding quality, which is difficult to meet the process requirements or cannot be welded.

In addition, the side of the acute angle between the bilge inner shell plate 2' and the inner bottom plate 1' will be welded with the bracket 4', and the bracket 4' will be butt welded with the inner bottom plate 1'. However, due to design problems, the space here is narrow, and the bilge inner shell The longitudinal bone 6' at the lower end of the plate 2' will affect the welding of the bracket plate 4', which is not conducive to the construction of butt welding

[0005] In order to solve the above problems, the current common method is to increase the degree of the acute angle between the bilge inner shell plate 2' and the inner bottom plate 1', but this design will sacrifice the cargo hold capacity, that is, reduce the cargo hold capacity, and at the same time Increased ballast tank capacity requires more ballast water loading, discharge and treatment, resulting in waste

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