Prefabricated Ship Module Frame with Removable Base for Deck Installation
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Solution Overview
Problem
Modularization of structurally heavier equipment and aggregates in shipbuilding faces challenges such as increased weight, space demands, complex connections, and maintenance difficulties, particularly when modules span multiple decks, leading to additional costs and reduced efficiency.
Innovation Solution
A modular solution where the module frame is prefabricated with self-supporting structures, allowing for removal of lower components during transport and installation, minimizing space and weight, and using inclined flange connections for secure and easy disassembly, with lightened horizontal structures that settle flush with ship decks, facilitating installation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a modular framework is used to support heavy equipment and aggregates, then the equipment can be transported and installed as a complete unit, but the framework occupies excessive space and increases the overall weight of the module
Solution Approach 1:
The module frame is divided into removable lowest section components (frame bottom) that are separated from the upper framework. This segmentation allows the frame to be transported in a compact configuration and then assembled on-site, reducing the space occupied during transport while maintaining structural integrity during installation.
Solution Approach 2:
The module frame transitions from a complete enclosed structure during transport to an open framework configuration during installation. The lowest section components are removed to reduce space occupation, demonstrating a dynamic adaptation of the frame structure based on operational requirements.
2Reliability
If a modular framework with complete enclosure is used, then the equipment is securely protected during transport, but the framework increases the overall weight of the module
Solution Approach 1:
The frame bottom is segmented as a separate removable component from the upper framework. This allows selective removal of non-essential lower sections after equipment loading, reducing the overall weight of the module while maintaining the protective enclosure during critical transport phases.
Solution Approach 2:
The lowest section components of the frame bottom are discarded (removed) after the equipment is securely positioned in the module. These components are not reused in the final installation, thereby reducing the permanent weight of the module while having served their protective function during transport.
3Adaptability or versatility
If the module frame extends vertically over multiple decks, then the equipment can be installed across different levels, but the frame components complicate maintenance operations and increase installation complexity
Solution Approach 1:
The vertical frame components are segmented into removable sections, particularly the lowest section components that connect different deck levels. This segmentation allows maintenance personnel to access equipment on different decks by removing specific frame sections, rather than working through a complete enclosed vertical structure.
Solution Approach 2:
The lowest section components of the frame bottom are extracted (removed) to create open access pathways for maintenance operations. This extraction eliminates obstacles that would otherwise block access to equipment located on lower decks or in hard-to-reach areas of the vertical structure.
4Ease of manufacture
If conventional modularization methods are used for heavy aggregates, then standard installation procedures can be followed, but hot works and installation hours are considerably increased
Solution Approach 1:
The equipment is pre-positioned and secured within the module framework during the prefabrication stage, before the module is transported to the installation site. This preliminary action eliminates the need for time-consuming on-site assembly and hot works, as the module arrives as a complete, pre-assembled unit requiring only final connection operations.
Solution Approach 2:
The installation process is dynamically optimized by removing the lowest section components of the frame bottom during the installation phase. This dynamic modification allows for faster assembly and connection operations compared to installing a complete enclosed module, thereby reducing total installation hours while maintaining standardization benefits.
Data Source
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AI summary
A method for the installation of equipment (8, 9, 10, 25) aboard a ship, said method comprising constructing first a framework (2, 22) for a module (1, 21 ) for mounting thereon the machines and devices of an equipment unit, and said method comprising moving a prefabricated module aboard a ship into a space allocated for the module, whereby, as the prefabricated module (1, 21 ) is being delivered onto a ship, the module framework (2, 22) has its lowest section components (6, 16, 27) dismantled for setting a lowermost equipment unit (10, 25) of the module in suspension from a remaining framework of the module, and that the placing and securing of a module aboard a ship is followed by removing at least some of vertically extending components (7, 1 1, 26) of the module framework. The invention relates also to such a module (1, 21 ).