Multi-link Rotation Structure for Efficient Power Transmission
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Solution Overview
Problem
Conventional power transmission mechanisms, such as multi-link mechanisms, suffer from energy loss and inefficiency due to asymmetrical structures and lack of rotation direction control, leading to potential deformation and reduced operational efficiency.
Innovation Solution
A multi-link rotation structure incorporating non-coaxial arm assemblies, unidirectional rotation devices, and linkage assemblies with weights to enhance rotational inertia and torque, while minimizing friction through unidirectional bearings and power-output connection mechanisms, allowing for unidirectional rotation and efficient power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional multi-link mechanisms are used for power transmission, then power can be transmitted from driving device to driven device, but energy loss increases and operational efficiency decreases
Solution Approach 1:
The patent implements dynamic motion through the multi-link mechanism where arms rotate about axles to convert rotary motion into cyclically variable rotary motion. The linkage assemblies connect moving parts that dynamically adjust positions during operation, enabling the system to adapt motion characteristics to reduce energy loss while maintaining power transmission efficiency.
Solution Approach 2:
The mechanism changes motion parameters through its linkage geometry. The arms and linkage assemblies transform constant rotary motion into variable rotary motion with changing speed and direction, optimizing energy transmission at different phases of the cycle and reducing overall energy loss in the system.
2Productivity
If asymmetrical arm assembly structure is used, then mechanism can convert rotary motion to cyclically variable rotary motion, but deformation likelihood increases
Solution Approach 1:
The patent deliberately employs asymmetrical arm assemblies where arms have different lengths and are positioned at specific angles (e.g., 90 degrees) to each other. This asymmetry is essential for converting rotary motion into cyclically variable rotary motion, creating the necessary mechanical advantage variations throughout the rotation cycle while maintaining structural integrity through proper design.
Solution Approach 2:
The mechanism is divided into separate modular components including multiple arms, linkage assemblies, and unidirectional rotation devices. This segmentation allows each component to be optimized independently for its specific function while contributing to overall structural stability and reducing deformation risks through distributed load paths.
3Power
If conventional connectors are used between driving and driven devices, then power transmission is achieved, but installation space requirements increase
Solution Approach 1:
The multi-link mechanism employs a compact nested arrangement where linkage assemblies are integrated within the arm assemblies. The unidirectional rotation devices are mounted on the arms themselves, creating a space-efficient configuration that transmits power effectively while minimizing the overall footprint and installation space requirements.
Solution Approach 2:
The mechanism utilizes three-dimensional spatial arrangement of arms and linkages rotating about axles positioned at different locations and orientations. This dimensional utilization allows compact power transmission within limited space by exploiting rotational motion in multiple directions rather than requiring linear extension.
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 multi-link rotation structure achieves efficient unidirectional power output with reduced energy loss and deformation risk, improving operational efficiency and suitability for various installations with a simple, cost-effective design.
Implementation Method 1
at least two unidirectional rotation devices having each an axle of rotation, wherein one of the at least two unidirectional rotation devices is rotatably mounted with its axle to one of the at least two arms of one of the two arm assemblies
Implementation Method 2
at least two linkage assemblies, wherein one of the at least two linkage assemblies is rotatably mounted to one of the at least two arms of one of the two arm assemblies and rotatably mounted to one of the at least two unidirectional rotation devices
Implementation Method 3
two arm assemblies, each of the two arm assemblies including an axle rotatably mounted to the base and at least two arms connected with the axle and extending away from each other, the axles of the two arm assemblies being non-coaxial
Data Source
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AI summary
A multi-link rotation structure is provided, including: a base; two arm assemblies, each of the two arm assemblies including a pivot portion pivoted to the base and at least two arms connected with the pivot portion and extending away from each other, the pivot portions of the two arm assemblies being non-coaxial; at least two unidirectional rotation devices, respectively axially pivoted to the at least two arms of one of the two arm assemblies, rotatable in a same direction; at least two linkage assemblies, each of the at least two linkage assemblies pivoted to the at least two arms of the other of the two arm assemblies and pivoted to one of the at least two unidirectional rotation devices.