Vessel floating in dock and secondary falling positioning accurate control method

Abstract

The invention relates to a method used for the floating of a ship inside a dock and precise control of the positioning of secondary pier falling; when two ships with different construction periods inside the dock are established at the same time, when one ship goes out of the dock, the other ship needs to be floated once, carry out the secondary pier falling for positioning and is established in the dock continuously; the method of the invention mainly comprises the steps as follows: (1) calculating the basis state of the ship; (2) configuring the process equipment for position limit; (3) arranging load, pressing weight and position; (4) controlling the measurement; (5) arranging cable; (6) controlling the floating; (7) controlling the pier falling. The method of the invention used for floating of a ship inside a dock and precise control of the positioning of secondary pier falling overcomes the problem in the prior art that the floating of a large ship inside a dock and the precise control of the positioning of secondary pier falling are difficult to be controlled, thus greatly improving the construction efficiency and the establishment speed of the ship.

Description

technical field [0001] The invention relates to ship construction, in particular to a method for controlling the positioning accuracy of floating and secondary pier falling in the dock during the ship construction process. When two ships are under construction in the dock at the same time, the construction period of the ship in the dock is relatively long. When one ship is undocked, the other ship needs to be floated once, and it needs to be positioned on the second pier to continue construction in the dock. Background technique [0002] The two ships in the dock start construction at the same time. When the construction period is different, the completed ship needs to be undocked first, and the unfinished ship needs to be floated first, and then the pier continues to be built. This process involves secondary positioning technology for ships that have not yet been built. This process is often used when building two ships at the same time in large docks, especially civil shi...

AI Technical Summary

Problems solved by technology

If the secondary positioning error of the ship in the dock deviates greatly, the ship cannot be placed in the original construction position after the pier is dropped. The misalignment of positions at different heights may cause serious consequences such as breaking the hull of the ship under its own weight

Applying the inventive method in the above-mentioned prior art to the construction of the above-mentioned large-scale military ship will cause the following problems: the precision deviation of the pier falling after the ship is floated is larger than the precision required by the construction of the military ship

There are relatively few positioning and limiting devices in the above-mentioned prior art, and there is no special control equipment in the process of floating and falling, and the positioning deviation cannot be found in time, resulting in the error of falling pier, which will have a negative impact on the construction of the ship, which will inevitably affect the ship. ship construction progress

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