Auxiliary device for welding corrugated plate to lower bevel of liquid cargo tank

Abstract

The invention discloses an auxiliary device for welding a corrugated plate to a lower bevel of a liquid cargo tank. The auxiliary device comprises a supporting structure clamped to corrugations of the corrugated plate, a bracket obliquely fixed to the supporting structure and a pedal fixed to the supporting structure and the bracket, wherein the included angle between the bracket and the supporting structure is equal to the inclination angle of the lower bevel of the liquid cargo tank, and the pedal is perpendicular to the bracket. The auxiliary device is simple in structure, convenient to mount and use and capable of lowering the difficulty in mounting the corrugated plate on the lower bevel of the liquid cargo tank; and meanwhile, the workload of constructors is reduced, the construction time is shortened, the potential safety hazard that the constructors are prone to falling in a traditional construction mode is eliminated, the ship production efficiency is improved, and the ship building period is shortened.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to an auxiliary device for welding corrugated plates on the lower slope of a liquid cargo tank. Background technique [0002] The MARK3 LNG maintenance system is a new type of LNG containment system launched by GTT Company in France, and the corrugation membrane sheet is the most important part in the construction process of the liquid cargo tank of the MARK3 LNG containment system. For contact, it is suitable for transporting liquefied natural gas at -163°C. [0003] The liquid cargo tank is divided into 10 surfaces, namely A\B\C\D\E\F\G\H\J\K, and the lower slope is the G\K surface. Due to the relatively long inclination length of the lower slope and the heavier weight of the corrugated plates, it is more difficult to install and weld the two lower slope corrugated plates. It turns out that when installing the corrugated board on the lower slope, the staff first climbed to ...

AI Technical Summary

Problems solved by technology

Due to the relatively long inclination length of the lower slope and the heavy weight of the corrugated board, it is more difficult to install and weld the two lower sloped corrugated boards.

It turns out that when installing the corrugated board on the lower slope, the staff first climbed to the lower slope, and then installed the corrugated board manually. This method is not only time-consuming, laborious, inefficient, but also low in safety. causing construction workers to fall

In addition, considering that corrugated boards are expensive and most of them are manufactured by foreign manufacturers, it takes a long time to transport them to China. If the installation position is wrong due to installation and welding problems, a large area will be required. Removing the corrugated plate for repair, the dismantling and assembling of the corrugated plate consumes a lot of man-hours, the cycle is long, and it is easy to affect the delivery cycle, which will bring huge economic, cycle and quality losses

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