Method for assembling flat-bulb steel on steel slab in ship building

Abstract

The invention relates to a method for assembling flat-bulb steel on a steel slab in ship building. The method is used for fixing the flat-bulb steel to the steel slab in ship building. The method for assembling the flat-bulb steel on the steel slab in ship building includes the steps that firstly, the steel slab is placed in a construction region, the fixing position of the flat-bulb steel is scribed and determined, and anti-toppling devices are prepared, wherein each anti-toppling device is composed of a main supporting body and longitudinal supporting feet; secondly, the flat-bulb steel is hoisted to the construction region through a crane, the two anti-toppling devices are installed on the flat-bulb steel from the two ends respectively, and the flat-bulb steel with the anti-toppling devices is placed on the steel slab; thirdly, the anti-toppling devices are adjusted according to the chalk line of the steel slab so as to change the position and the angle of the flat-bulb steel, and the flat-bulb steel vertically stands on the steel slab; fourthly, spot welding operation is firstly conducted for initial fixation, the anti-toppling devices are detached after detection qualification, and further welding fixation is conducted. The method and a special tool are convenient to install and operate, safe, reliable and high in realistic value.

Description

technical field [0001] The invention relates to shipbuilding, in particular to an assembly method for assembling a bulbous flat steel on a steel plate and a special anti-dumping device. Background technique [0002] In the process of shipbuilding and marine engineering construction, bulbous flat steel is often used as a reinforcement for reinforcement. Especially with the start of construction of high value-added ships, a large number of ribs and ribs have been applied to these new ship types using bulbous flat steel structures. In specific applications, the web of the flat steel ball is usually welded vertically on the large steel plate. In this process, the flat steel ball must be assembled to the welding fixed position of the steel plate first, and then the corresponding fixed position must be transferred. Welding and fixing are carried out, so that one or more bulbous flat steels and steel flat plates are integrated. [0003] In the prior art, the ball flat steel and ...

AI Technical Summary

Problems solved by technology

[0010] 1. The assembly operation is complicated and it is difficult to ensure the accuracy. Since the construction needs to manually control the crane and other equipment to adjust the position for assembly, the operation of placing the bulb flat steel on the steel plate is cumbersome and complicated, and it is difficult to effectively adjust the position, making the construction complicated. Slow and difficult to guarantee accuracy

[0011] 2. The welding process is cumbersome and prone to misoperation. Since it is necessary to adjust the position and then weld the diagonal brace to ensure that the position of the spherical flat steel is correct without dumping and displacement, the welding process of the diagonal brace is complicated and cumbersome, and it is difficult to effectively adjust it once welding , the diagonal brace must be removed and re-welded, making the operation error-prone, resulting in slow progress in the entire construction process, and even the overall fixing effect

[0012] 3. The use of diagonal braces consumes a lot of energy and is difficult to recycle. Since the use of diagonal braces needs to be welded to the bulbous flat steel and steel plate at both ends, the removal needs to destroy the welding points to complete, which will inevitably leave scars that need to be polished. In addition Due to the large amount of assembly and welding required on the overall ship, it will inevitably lead to a large consumption of diagonal braces, and it is difficult to effectively reuse them

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