High precision welding method for rudder horn, propeller shaft bracket and intermediate shaft bracket of long shaft ship

Abstract

The invention discloses a high precision welding method for a rudder horn, a propeller shaft bracket and an intermediate shaft bracket of a long shaft ship, belonging to the field of ship welding. In the high precision welding method, a shaft center line of the ship is firstly pulled out according to design requirements when the ship is assembled and installed; after the shaft center line is examined, the following three steps are synchronously carried out: firstly, welding of the rudder horn; secondly, the welding of the propeller shaft bracket; and thirdly, the welding of the intermediate shaft bracket. Compared with the prior art, because installation phases of the propeller shaft bracket and the intermediate shaft bracket are advanced to the assembling phase, the construction condition is improved, and the installation precision is ensured; and because the complete cross section of a ship body is horizontally assembled (the complete cross section is the propeller shaft bracket which is reversely placed, and the intermediate shaft bracket is over the intermediate shaft bracket), the installation position can be adjusted by fully utilizing a crane when the ship body is installed, the working efficiency is improved, and the utilization time of a dock is greatly reduced.

Description

technical field [0001] The invention relates to a welding method, in particular to a high-precision welding method for a rudder arm, a tail shaft frame and an intermediate shaft frame of a long-axis ship, and belongs to the field of ship welding. Background technique [0002] For long-shafted ships, the installation of the stern shaft frame and the intermediate shaft frame is usually carried out by manually pulling up under the dock. Since it cannot be hoisted, the installation is difficult, and it is also very difficult to adjust. The construction environment is poor and it is difficult to guarantee the installation accuracy. In addition, the most important resource in the shipyard is the dock. The traditional welding method takes a long time in the dock, and it is difficult to improve work efficiency. Contents of the invention [0003] The object of the present invention is to provide a high-precision welding method for the rudder arm, the tail shaft frame and the inter...

AI Technical Summary

Problems solved by technology

[0002] For long-shafted ships, the installation of the stern shaft frame and the intermediate shaft frame is usually carried out by manually pulling up under the dock. Since it cannot be hoisted, the installation is difficult, and it is also very difficult to adjust. Poor construction environment, difficult to ensure installation accuracy

In addition, the most important resource in the shipyard is the dock. The traditional welding method takes a long time in the dock, and it is difficult to improve work efficiency.