Prefabricated Ship Cabin Mounting Bracket With Elastic Decoupling

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Solution Overview

Problem

Existing ship cabin construction techniques are incompatible with floating floors, as prefabricated cabins cannot be easily installed due to space constraints and weight issues, and they do not provide effective acoustic insulation and vibration reduction.

Innovation Solution

A prefabricated cabin structure with fastening means comprising a mounting bracket, an elastic element, and a connecting bracket that allows for decoupling from the ship's deck, enabling installation on decks with floating floors, and incorporating additional insulation layers like mineral wool for enhanced noise and vibration attenuation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a floating floor is installed on the deck, then acoustic insulation is improved, but the installation of prefabricated cabins becomes incompatible due to reduced vertical space and weight constraints

Engineering Contradiction:

Improveacoustic insulationVSAvoidcompatibility with prefabricated cabins

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The mounting bracket is divided into separate components: a first bracket portion attached to the deck, an elastic element, and a second bracket portion attached to the cabin wall. This segmentation allows the floating floor to be installed first on the deck, then the cabin structure is assembled separately and connected through the elastic mounting system, resolving the incompatibility between floating floors and prefabricated cabin installation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic element acts as an intermediary component between the rigid deck structure and the prefabricated cabin. It provides acoustic decoupling while allowing the cabin to be mounted after the floating floor installation, enabling both acoustic insulation and prefabricated cabin compatibility

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of time

If prefabricated cabins are used, then assembly time and on-board construction work are reduced, but acoustic insulation and vibration reduction become insufficient

Engineering Contradiction:

Improveassembly timeVSAvoidnoise and vibration transmission

Core Design Contradiction:

Loss of timeVSObject-affected harmful factors

Solution Approach 1:

The elastic element is pre-installed as part of the mounting bracket system before the prefabricated cabin is positioned on the deck. This beforehand cushioning provides acoustic insulation and vibration reduction from the outset, allowing the cabin to be quickly installed while maintaining noise and vibration protection

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The mounting system combines rigid components (bracket portions for structural support) with elastic materials (for acoustic insulation and vibration damping). This composite approach maintains the quick installation advantage of prefabricated cabins while adding acoustic and vibration protection

Inventive Principle:

Principle #40Composite materials

3Strength

If the cabin wall is directly mounted to the deck, then structural strength is maintained, but acoustic insulation and vibration reduction are compromised

Engineering Contradiction:

Improvestructural strengthVSAvoidnoise and vibration transmission

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The mounting bracket uses different material properties at different locations: rigid bracket portions for structural attachment points to maintain strength, and an elastic element at the connection point between deck and cabin to provide acoustic insulation and vibration reduction. This local differentiation of material quality achieves both structural integrity and noise/vibration protection

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution allows for the installation of prefabricated cabins on ships with floating floors, reducing noise transmission by 5-10 dB in the low-frequency range and maintaining insulation properties, while decreasing vibration transmission from the ship's structure to the cabin.

Implementation Method 1

fastening means (16) comprising a mounting bracket (20), an elastic element (26), and a connecting bracket (22)

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

decreasing the transmission of vibrations from the ship's structure to the cabin

Methodology Applied

Scientific EffectVibration damping: Damping

Implementation Method 3

incorporating additional insulation layers like mineral wool for enhanced noise and vibration attenuation

Methodology Applied

Scientific EffectAcoustic absorption: Acoustic Absorption

Data Source

PatentEP3956213B1Cabin structure for ship and method of assembly of a prefabricated cabin

Publication Date: 2024.03.20 FINKANTIERI SPA

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AI summary

A cabin structure (12) for ships comprises at least one wall (14) provided with fastening means (16) for fastening to a deck (18) of a ship. The fastening means (16) comprise: a mounting bracket (20) designed to be secured to said deck (18); a connecting bracket (22) designed to be secured at at least an edge portion (24) of the wall (14); and at least one elastic element (26) provided between the mounting bracket (20) and the connecting bracket (22).