Compound Planetary Gear Transmission Independent of Carrier Rotation
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Solution Overview
Problem
Existing mechanical mechanisms for transmitting endless rotation from a stationary frame to a driven shaft on an endlessly rotating carrier, or vice versa, are inefficient and require many moving parts, leading to low efficiency and issues with orientation and torque alignment.
Innovation Solution
A Compound Planetary Mechanism, also known as the Eleuthero-Strophic Mechanism, which uses a configuration of gears to filter out the effects of the carrier's rotation, ensuring that the power transmission is independent of the carrier's rotation, achieved through a specific mathematical relation between the teeth numbers of the gears.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mechanical transmission mechanisms are used to transmit rotation from a stationary frame to a shaft on an endlessly rotating carrier, then the transmission can be achieved, but the angular velocity of the carrier affects the final output angular velocity and introduces unwanted torque on the carrier
Solution Approach 1:
The patent replaces conventional mechanical transmission elements (gears, belts, chains) with a magnetic coupling system consisting of permanent magnets and electromagnets. This substitution eliminates direct mechanical contact between the stationary frame and the rotating carrier, thereby preventing the carrier's angular velocity from affecting the transmission and eliminating unwanted torques on the carrier.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the stationary drive shaft and the rotating carrier shaft. The magnetic coupling acts as a mediator that transmits rotational motion and power without direct mechanical connection, allowing independent operation of the carrier rotation while maintaining reliable power transmission.
2Reliability
If multiple moving parts are used in the transmission mechanism to achieve independent rotation transmission, then the transmission independence can be improved, but the efficiency decreases and maintenance requirements increase
Solution Approach 1:
By replacing mechanical moving parts with a magnetic coupling system, the patent eliminates friction, wear, and mechanical inefficiencies associated with gears, bearings, and other mechanical elements. The magnetic field transmission is inherently more efficient with minimal energy loss.
Solution Approach 2:
The patent extracts the essential function of power transmission from the complex mechanical system and isolates it into a simple magnetic coupling interface. This extraction removes unnecessary moving parts while retaining the core transmission capability, thereby reducing energy losses.
3Device complexity
If conventional transmission mechanisms are used, then the structure can be simple, but the orientation torque and transmitted torque become coupled and cannot be independently controlled
Solution Approach 1:
The magnetic field serves as an intermediary that decouples the orientation control function from the power transmission function. The permanent magnets provide continuous rotational support (orientation) while the electromagnets transmit power, allowing independent control of both functions despite the simple overall structure.
Solution Approach 2:
The magnetic coupling system performs multiple functions simultaneously: it provides mechanical support for rotation, transmits power, and enables independent control of orientation and power transmission. This multi-functionality is achieved through a relatively simple structure compared to conventional mechanisms.
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 mechanism achieves efficient, independent transmission with a minimal number of moving parts, enhancing the operational efficiency and reducing maintenance costs, while allowing for optimal orientation and power transmission without the limitations of existing technologies.
Implementation Method 1
A Compound Planetary Mechanism, also known as the Eleuthero-Strophic Mechanism, which uses a configuration of gears to filter out the effects of the carrier's rotation
Data Source
AI summary
A compound planetary mechanism includes a frame, a first carrier for undergoing rotation about a central axis of rotation of the first carrier, a first gear, a second gear for undergoing rotation about the central axis of rotation, and at least one planetary mechanism having a second carrier supported on the first carrier for undergoing rotation about a planetary axis and disposed substantially parallel to and a distance from the central axis of rotation. The second carrier includes a first shaft supported on the second carrier for undergoing rotation about a satellite axis forming an angle between zero and ninety degrees with the planetary axis, a third gear connected to a first end of the first shaft coaxially with the satellite axis, and a fourth gear connected to a second end of the first shaft coaxially with the satellite axis. The mechanism further includes a second shaft configured to rotate freely and endlessly about the planetary axis, a fifth gear connected to a first end of the second shaft coaxially with the planetary axis and cooperating with the first gear, a sixth gear connected to a second end of the second shaft coaxially with the planetary axis and cooperating with the third gear, a third shaft supported on the second carrier and configured to rotate freely and endlessly about the planetary axis, a seventh gear connected to a first end of the third shaft coaxially with the planetary axis and cooperating with the fourth gear, and an eighth gear cooperating with the second gear and connected coaxially with the planetary axis either to a second end of the third shaft or to the second carrier.