Boat Transportation Carriage with Rotatable Arm Structures
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Solution Overview
Problem
Existing boat transportation carriages face challenges in simplifying the construction of self-propelled carriages with 'U'-shaped chassis for irregular paths and require adaptations for larger boat displacements, such as 75 tons, while also being compact enough for standard container shipping.
Innovation Solution
The design incorporates a simplified 'U'-shaped carriage structure using three main units with a unique cross-section third frame portion as a torsion element, axial bearings, and adjustable arm structures with supporting disc elements to facilitate horizontal and vertical load distribution, allowing for easy assembly and disassembly, and adaptation to irregular paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the carriage is designed to support boats with displacement of at least 75 tons, then the load-bearing capacity is improved, but the device complexity and structural complexity increase
Solution Approach 1:
The carriage is divided into three separate frame portions (first, second, and third frame portions) that can be assembled and disassembled independently. This segmentation allows the structure to be designed for high load-bearing capacity while maintaining ease of assembly and storage, resolving the contradiction between structural complexity and functionality.
Solution Approach 2:
The arm structures incorporate rotatable joints and adjustable mechanisms that allow dynamic adaptation to different loading conditions and path irregularities. This dynamic design enables the structure to optimize its load distribution under varying conditions without requiring overly complex fixed structures.
2Ease of manufacture
If the carriage structure is simplified for easier assembly and disassembly, then the ease of manufacture is improved, but the reliability and load-bearing capacity may deteriorate
Solution Approach 1:
By dividing the carriage into three main frame portions that can be independently assembled and disassembled, the design achieves ease of manufacture and storage while maintaining structural integrity through proper connection design at the joints.
Solution Approach 2:
The arm structures utilize curved or angled geometries with rotatable joints that provide both mechanical advantage for load distribution and simple assembly mechanisms, combining ease of manufacture with reliable load-bearing performance.
3Adaptability or versatility
If the third frame portion is designed with a unique cross section as a torsion element, then the adaptability to irregular paths is improved, but the device complexity increases
Solution Approach 1:
The third frame portion serves multiple functions: it connects the first and second frame portions, acts as a torsion element to accommodate path irregularities, and provides a mounting structure for the arm structures. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The unique cross-section design of the third frame portion provides torsional flexibility that allows the carriage to dynamically adapt to irregular transport paths while maintaining structural integrity, combining adaptability with a relatively simple single-piece design.
4Ease of operation
If the carriage is designed to be disassembled into three units for container shipping, then the ease of operation is improved, but the manufacturing precision and assembly complexity increase
Solution Approach 1:
The carriage is divided into three standardized frame portions with matching connection interfaces that enable precise reassembly after disassembly. The segmentation is designed with standardized dimensions and tolerances to ensure proper alignment and connection.
Solution Approach 2:
The connection joints between frame portions utilize curved or angled geometries with rotatable elements that provide self-aligning features, reducing the precision requirements for manual assembly while ensuring proper mechanical connection.
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
This solution enables efficient transportation of boats up to 75 tons by simplifying the construction and enabling the carriage to be easily disassembled for container shipping, while maintaining stability and load-bearing capacity through adjustable and rotatable arm structures.
Implementation Method 1
using a third frame portion, with a unique cross section, as a torsion element for a larger horizontal direction
Implementation Method 2
to use axial bearings, in order to facilitate the adaptation of the breadth
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The present invention comprises an arm structure (22, 22') adapted for a boat transportation carriage (1), said boat transportation carriage being adapted to exhibit two elongated frame portions, a first frame portion (1a) and a second frame portion (1b), with a third frame portion (1c") adapted to interconnect said two frame portions. Said arm structure (22, 22') is adapted to exhibit on the one hand a vertically ex- tended arm portion (22) and on the other hand a horizontally extended arm portion (23), with the lower portion of the vertically extended arm portion (22) being adapted indirectly to be able to rest against a chassis ("C") belonging to the boat transportation carriage (1) and its frame portion (1b) for taking up its allotted portion of the vertical loads,which are to be referred to the deplacement of a boat carried by the boat transportation carriage. The invention indicates that between the lower portion (23a) of the horizontally ex- tended arm portion (23) and the upper portion of said chassis or frame portion (1b) and in adherement to the vertically extended arm portion (22) there rests a support plate or element(30). This support plate(30) is allotted a supporting surface (30a) for supporting cooperation with the horizontally extended arm portion (23) and this sup- porting surface (30a) is disposed within a chosen intermediate area of said horizontally extended arm portion (23).