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

A technology of hanging rudder arm and tail shaft frame, which is applied in ship construction, welding equipment, ship parts, etc., can solve the problems of long occupancy of dock, poor construction environment of dock, and difficulty in ensuring installation accuracy.

Inactive Publication Date: 2011-05-18
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Embodiment Construction

[0064] The present invention will be further described below in conjunction with specific examples.

[0065] Taking the 50000T semi-submersible ship as an example, a high-precision welding method for the rudder arm, tail shaft frame and intermediate shaft frame of a long-shafted ship in this embodiment is to pull out the ship according to the design requirements when installing the general assembly. Shaft centerline, after checking the shaft centerline, do the following three parts at the same time:

[0066] 1. Welding of rudder arm

[0067] 2. Welding of tail shaft frame

[0068] 3. Welding of intermediate shaft frame

[0069] The first part of the welding of the rudder arm includes the following steps:

[0070] 1. First remove the outer plate connected to the rudder arm, and then position the rudder arm;

[0071] 2. Use a crane to lift the rudder arm above the installation position, then slowly lower it vertically, and use a pump or hoist to adjust it in place. According...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/00B63B9/06
Inventor 戴小明邵丹丹段仲兵李家林程建陈立群
Owner CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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