Unilateral positioning method for secondary docking of ship in dock

Abstract

The invention provides a unilateral positioning method for secondary docking of a ship in a dock, and belongs to the field of undulation and secondary docking unilateral positioning in a dock during ship building. Through utilization of a stop device, a furling device and the like, the unilateral positioning method for secondary docking of a ship in a dock is suitable for multiple types of ships,is easy for operation and is convenient for dismounting and mounting. The unilateral positioning method for secondary docking of a ship in a dock can solve the problem that based on the traditional ship movement method, a safety factor is low and positioning precision is difficult to be guaranteed. The unilateral positioning method for secondary docking of a ship in a dock has the advantages of simple operation and fast positioning, and can be widely utilized for the field of ship building.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a single-side positioning method for floating and secondary pier falling in a shipbuilding process. Background technique [0002] In order to improve the utilization rate of the dock, the series of ships often adopt the two-and-a-half-line serial construction method during the construction process. For shipyards that undertake the construction of more ship types, half-ship construction will also occur during the construction of ships in different docking periods. Because the construction period is different, the completed ship must be undocked first, and the unfinished ship must be floated first, and then the pier will continue to be built. All of these need to control the positioning accuracy of the ship and the pier while the hull is floating. The back of the pier meets the accuracy requirements of the pier, or meets the construction accuracy requirements of the half-ship...

AI Technical Summary

Problems solved by technology

[0004] 1. Traditional vertical winches and winches have large inertia when positioning, and it is difficult to control the accuracy

Moreover, due to the wide dock width, one side of the hull is far away from the dock wall, and the wire rope connection is longer, resulting in a low safety factor

[0005] 2. If figure 1 As shown, when there are other ships in the dock, especially when they are side by side, it is easy to cause interference during positioning; The four cables in the mid-side area of ​​the dock will interfere with each other, or the cables will collide with the side-by-side hull structure / equipment / outfitting, and the length of the cables on the left and right sides of each half-ship is extremely asymmetrical, which is extremely unfavorable for the adjustment and positioning accuracy of the half-ship. Positioning accuracy is difficult to guarantee

[0006] And patent 200410066741.6 and patent 200810039748.7 announced the floating in the dock and the limit device of the second pier falling method are all fixed, and basically in the original position of floating and pier falling, for two and a half ships underwater, such as our company For the 50,000-ton semi-submersible ship, two and a half ships are built in different positions. After being floated in the dock, they are positioned by dragging and re-installed on the pier. The above-mentioned patent method is obviously not applicable, and the " The limit device in the method of controlling the positioning accuracy of the ship's floating in the dock and the secondary pier fall needs to be manufactured and installed according to the hull shape, which is not universally applicable, and the disassembly and assembly of the limit device in the above two patent methods still needs to be done. It takes man-hours, so a pier method with wide applicability and easy disassembly and assembly is more advantageous

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