Boat Platform Assembly With Coordinated Rotary Actuators
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Solution Overview
Problem
Existing movable platform assemblies for boats face challenges in achieving compactness and efficient actuation while maintaining a constant inclination of the loading platform during rotation, which affects the overall system's efficiency and usability.
Innovation Solution
The use of dual rotary actuators mounted on hinging axes with coordinated control means ensures the loading platform maintains a constant inclination, utilizing hydraulic and electronic control units with sensors to manage the rotation of pivotable arms, allowing for a compact and efficient actuation system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If chain-type transmission means are used to move the pivotable arm, then the platform can be moved between different positions, but the actuating system becomes complex and occupies significant space
Solution Approach 1:
The patent replaces the traditional chain-type mechanical transmission system with a direct rotary actuator system. The rotary actuators are mounted directly on the hinging axes, eliminating the need for intermediate chain transmissions and reducing mechanical complexity while maintaining the platform's movement capability between different positions.
Solution Approach 2:
The patent extracts and removes the chain-type transmission components from the actuating system, keeping only the essential rotary actuators mounted on the hinging axes. This extraction simplifies the overall system architecture and reduces the space occupied by the actuating mechanism.
2Stability of the object's composition
If additional chain-type transmission means are used to ensure parallel alignment, then the platform maintains proper orientation, but the system becomes less compact
Solution Approach 1:
The patent merges the alignment function into the primary rotary actuation system. The control means coordinates the rotation of actuators mounted on both hinging axes, combining the movement and alignment functions into a single integrated system rather than requiring separate chain-type transmission means for alignment.
Solution Approach 2:
The rotary actuators serve multiple functions: they provide the primary movement capability and simultaneously ensure the parallel alignment of the loading platform with the base portion through coordinated control. This multi-functionality eliminates the need for additional dedicated alignment mechanisms.
3Manufacturing precision
If rotary actuators with coordinated control are used, then the loading platform maintains constant inclination during rotation, but the control system becomes more complex
Solution Approach 1:
The patent implements coordinated control of the rotary actuators through control means that monitor and adjust the rotation of actuators on both hinging axes. This feedback mechanism ensures that the loading platform maintains constant inclination relative to the base portion during rotation, achieving precise inclination control through active management of the actuator positions.
Data Source
AI summary
A movable platform assembly comprises a base portion, able to be fixed to a support structure, and at least one pivotable arm hinged at one end with the base portion, about a first hinging axis, and at the other end with a loading platform, about a second hinging axis, the pivotable arm being able to be rotated by means of actuating devices, which are designed to allow the platform to maintain a constant inclination with respect to the base portion during rotation of the pivotable arm. The actuating devices comprise a first and a second rotary actuator mounted on the first and second hinging axis, respectively. The first rotary actuator comprises a first part fastened to the base portion and a second part rotatable with respect to the first part and fastened to the pivotable arm, and the second rotary actuator comprising a first part fastened to the loading platform and a second part rotatable with respect to the first part and fastened to the pivotable arm, said actuating devices also comprising control devices able to control in a co-ordinated manner rotation of said first and second rotary actuators.