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A process for refitting ship rudder blades

A rudder blade and process technology, which is applied in the field of ship rudder blade modification technology, can solve the problems of large curved surface line type, etc., and achieve the effect of beautiful appearance, good quality and precision, and practical construction plan

Active Publication Date: 2020-07-14
广州文冲船舶修造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As for the hyperbolic suspension rudder rudder blade, because it is a hyperboloid design and the curved surface is relatively large, the weight of each modified part of each rudder blade is about 20 tons. At the same time, in order to improve engineering efficiency and shorten the docking period to improve economic benefits, the original ship rudder blade modification needs to be carried out on-site without dismantling the rudder blade in the dock, and it is also necessary to ensure the safety of the new rudder blade after construction. The accuracy deviation is within the specified range. On this basis, how to seal the reserved part of the original rudder, how to remove the old rudder, how to hoist the segments, and how to ensure the accuracy require engineers to adopt reasonable and effective construction procedures and accuracy control measures. Technology and construction present great challenges

Method used

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  • A process for refitting ship rudder blades
  • A process for refitting ship rudder blades
  • A process for refitting ship rudder blades

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Embodiment 1

[0057] This embodiment provides a process for refitting ship rudder blades, which includes the following steps:

[0058] Step S1: Removal of the old rudder blade:

[0059] 1) Preparation before disassembly:

[0060] a. After the ship is docked, set up a work frame in the rudder blade construction area.

[0061] b. Swing the rudder blades on the ship to zero rudder angle, divide them into sections according to the drawings, and delineate the parts of the old rudder blades that need to be retained and the parts that need to be removed, please refer to image 3 , image 3 It is a schematic diagram of the structure of the old rudder blade modification area. The part of the old rudder blade that needs to be retained is the old rudder blade reserved section 130, as shown by the shaded part in the figure; the part that needs to be removed is the old rudder blade removal section 140, and its overall side view is L-shaped. Please refer to Figure 4-5 , Figure 4 Keep the sectional fixed side ...

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Abstract

The invention discloses a process for refitting a rudder blade of a ship. The process comprises operating steps of removing an old rudder blade and mounting a new rudder blade. According to the process for refitting the rudder blade of the ship, when the rudder blade of the ship is refit, the rudder plate is constructed onsite under the circumstance of not removing the rudder blade in a dock, so that the engineering efficiency can be improved effectively, the dock period is shortened and the economical benefit is improved. Meanwhile, the positional deviation of the new rudder blade after construction is within a specified scope by adopting reasonable and effective construction flows and positioning precision control measures. The refit new rudder blade is linearly smooth and attractive inappearance as a whole. Via actual production application, the refitting process is practicable in construction scheme, controls the quality and precision well, and lays a good foundation for follow-uptwin rudder refitting engineering of same type ship.

Description

Technical field [0001] The invention relates to the technical field of ship maintenance engineering, in particular to a ship rudder blade modification process. Background technique [0002] The ship modification project is a project that the shipowner decides to carry out the corresponding transformation of the existing ship based on the comprehensive reasons such as market changes, improved safety and pollution prevention standards, and social and economic needs. The ship modification project is a major project between ship repair and new ship construction. With the rapid development of ship repair business worldwide and the urgent needs of the shipping industry, ship modification engineering in the ship repair industry is an important part of the ship repair industry. The expansion and significant efficiency increase of the modification business has contributed to the development of the ship repair industry. Injected a strong momentum. Ship modification projects have graduall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B81/00
Inventor 杨成冯木水杨坤荣钟伟怀马春清
Owner 广州文冲船舶修造有限公司
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