Ship lengthening and reconstruction method

Abstract

The invention discloses a ship lengthening and reconstruction method, and belongs to the technical field of ship lengthening and reconstruction, and the method comprises the following steps of ship surveying and scribing, cutting, bow section pulling, segmented carrying, bow section folding and corollary equipment refitting. Displacement of the bow section is achieved through the method that the air bag and the traction device are matched, the difficulty that shipyard infrastructures are insufficient is overcome, meanwhile, cost is greatly reduced, the requirement for a shipyard foundation is not high, the method is suitable for the dock and the slipway, the applicability is wide, cost is low, and the period is controllable; according to the five-segment line inspection method, five segments are matched with a laser device to measure and record the deflection value of the ship position, a small segment carrying method is adopted for segmentation, the carried and folded segments can be finely adjusted in time, and the lengthening and reconstruction precision is improved; the large opening position and the weak structural strength position of the bow section are supported and reinforced after segmented lineation, the cut plane is perpendicular to the center line of the ship, and it is further guaranteed that the precision of the ship is controllable.

Description

technical field [0001] The invention belongs to the technical field of ship lengthening and rebuilding, and in particular relates to a ship lengthening and rebuilding method. Background technique [0002] As we all know, shipping transport accounts for the largest proportion in world trade. However, the cost of new ships is high, the cycle is long, and the investment is high. The lengthening and reconstruction of ships can meet the needs of increasing transport capacity and improving ship utilization in a short period of time. However, although the lengthening and reconstruction of ships has obvious advantages, it is technically difficult, and the transformation and upgrading of technology is imperative. [0003] At present, the "floating and sinking method" and "orbital pulling method" are commonly used in lengthening and reconstruction processes. Since the "floating and sinking method" is only applicable to floating docks and is restricted by the shipyard infrastructure, a...

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Problems solved by technology

[0003] At present, the "floating and sinking method" and "orbital pulling method" are commonly used in lengthening and reconstruction processes. Since the "floating and sinking method" is only applicable to floating docks and is restricted by the shipyard infrastructure, and more fixing and strengthening are required, the cut bow and stern sections are for To avoid soaking in water, corresponding protective measures need to be taken; while the "track pulling method" requires special rails or flatbed vehicles, which has higher requirements for the foundation of the shipyard, and relatively speaking, the investment cost is large. Comprehensive consideration, the above two methods are used The cost is high and the dock and berth need to be rebuilt, so it is not suitable for small-scale shipyards

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