Elevation system and vessel having a same
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Solution Overview
Problem
Conventional lift devices for loading vehicles on roll-on roll-off vessels are inefficient due to high load burden on the drive system, complex fixing structures, and difficulty in adapting to varying vessel sizes, leading to suboptimal space utilization.
Innovation Solution
An elevation system comprising multiple deck units with movable decks, sliding units, elevation wires, and sheaves that allow for selective and simultaneous operation, using a drive wire wound around first and second sheaves to distribute the load efficiently and adjust deck positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional lift devices are installed to load vehicles in multiple stages, then loading capacity is improved, but drive system load burden increases and fixing structure becomes complicated
Solution Approach 1:
The cargo hold is divided into multiple decks (first deck, second deck, third deck) with each deck independently configurable. The elevation system segments the lifting function into multiple deck units that can be operated independently or simultaneously, allowing vehicles of different sizes to be loaded on different decks without requiring a single complex lift device.
Solution Approach 2:
The elevation system uses movable decks that can be dynamically adjusted to different positions and configurations. The decks can be raised, lowered, and positioned flexibly to accommodate various vehicle types and loading requirements, replacing the static and complex fixing structures of conventional lift devices.
2Quantity of substance
If conventional lift devices are used to increase loading capacity, then space utilization is improved, but the drive system becomes inefficient due to high load burden
Solution Approach 1:
The total lifting load is segmented and distributed across multiple independent deck units (first deck unit, second deck unit, third deck unit). Each deck unit has its own elevation system that can be operated independently, distributing the drive system load burden rather than concentrating it on a single lift device.
Solution Approach 2:
The elevation system allows selective operation of individual deck units based on loading requirements. Not all decks need to be operated simultaneously - only the necessary decks are activated, reducing the overall power consumption and drive system load compared to conventional systems that must handle maximum load at once.
3Quantity of substance
If conventional lift devices are installed to maximize space usage, then loading capacity is improved, but adaptability to different vessel sizes is reduced
Solution Approach 1:
The elevation system is designed as a universal solution that can be adapted to vessels of different sizes and configurations. The modular deck units can be arranged and configured to match various cargo hold dimensions, making the system versatile across different vessel types while maintaining high loading capacity.
Solution Approach 2:
The movable decks can be dynamically repositioned and reconfigured to adapt to different vessel sizes and loading requirements. This flexibility allows the same elevation system design to be applied to various vessel types, from small to large, without requiring custom-designed lift devices for each vessel size.
4Productivity
If multiple decks are operated simultaneously, then productivity is improved, but control complexity increases
Solution Approach 1:
The control systems of multiple deck units are merged into a unified control architecture. The driver can control multiple decks simultaneously through a single integrated interface, simplifying the control structure despite the complexity of operating multiple decks in parallel for improved productivity.
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 system enables efficient operation of multiple decks with reduced load burden on the drive system, allowing for flexible adaptation to different vessel sizes and space configurations, enhancing loading capacity and space utilization.
Implementation Method 1
a drive wire which extends through the plurality of deck units and is simultaneously wound around the first sheave and the second sheave of each of the deck units to deliver a driving force to the sliding unit; and a driver which pulls the drive wire to cause the sliding unit to be slidably moved
Implementation Method 2
a plurality of elevation wires, each of which has one end connected to the movable deck and the other end coupled to the sliding unit via a direction changing sheave installed at the frame
Data Source
AI summary
An elevation system includes deck units each including a frame, a movable deck coupled to the frame to be movable in a vertical direction, a sliding unit coupled to the frame to be movable in a horizontal direction, and elevation wires connected to the movable deck and the sliding unit via a direction changing sheave at the frame, a first sheave at each of the deck units and fixed to the frame, a second sheave at each of the deck units and coupled to the sliding unit to adjust a distance between the first sheave and the second sheave, a drive wire extending through the deck units and simultaneously wound around the first sheave and the second sheave of each of the deck units to deliver a driving force to the sliding unit, and a driver pulling the drive wire to cause the sliding unit to be slidably moved.