Planetary Multi-Gear Torquer for High-Torque Efficient Transmission

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Solution Overview

Problem

Current power train technologies, particularly gear trains, face challenges in achieving high energy efficiency and transmission efficiency while minimizing resistance forces, which limits their application in mechanical transmission devices like automobiles and trains.

Innovation Solution

A multi-gear torquer design featuring a sun gear, planet gear, and ring gear configuration with specific gear shapes and positions, allowing the planet gear to move around the sun gear and drive a turntable connected to the output shaft, effectively resolving resistance forces and generating high torque with reduced rotation speed, thereby enhancing mechanical efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If conventional gear train is used for power transmission, then high transmission efficiency is achieved, but resistance forces are not effectively minimized

Engineering Contradiction:
Improveresistance forcesVSAvoidtransmission efficiency
Core Design Contradiction:
Loss of energyVSProductivity

Solution Approach 1:

The patent employs dynamic planetary gear mechanisms where planet gears can move relative to the sun gear and ring gear, enabling variable transmission ratios. This dynamic configuration allows the system to optimize power transmission efficiency while minimizing resistance forces through adaptive gear engagement, resolving the contradiction between maintaining high transmission efficiency and reducing energy losses.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention utilizes multiple planetary gear stages with different transmission ratios, allowing the system to change parameters dynamically based on load conditions. By switching between different gear configurations, the system maintains optimal transmission efficiency across varying operating conditions while minimizing resistance forces through parameter optimization.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If multi-gear mechanism is implemented to increase torque output, then mechanical efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvetorque outputVSAvoidgear mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements nested planetary gear stages where planet gears are arranged concentrically around a central sun gear, with multiple gear stages nested within each other. This nested configuration enables high torque multiplication while maintaining a compact structure, reducing the overall complexity compared to sequential gear arrangements.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The planetary gear mechanism serves multiple functions simultaneously: it provides torque multiplication, variable transmission ratios, and compact power transmission in a single integrated structure. This multi-functionality reduces the need for separate mechanisms, thereby decreasing overall device complexity while maintaining high torque output capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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-gear torquer achieves high mechanical efficiency and strong anti-overload capability, making it suitable for power transmission in automobiles and mechanical equipment by effectively managing resistance forces and increasing torque output.

Implementation Method 1

A sun gear meshes with a planet gear of the transmission mechanism is fixed on the input shaft. The sun gear moves along the planet gear engaged therewith. The planet gear moves along a ring gear engaged therewith.

Methodology Applied
Scientific EffectGear meshing: Gear

Implementation Method 2

The casing is provided with an oil inlet hole and an oil outlet hole, with lubricating oil disposed at the bottom.

Methodology Applied
Scientific EffectLubrication: Lubrication

Data Source

PatentUS10914361B2Multi-gear torquer
Publication Date: 2021.02.09 LIU GANG
  • US10914361B2 patent drawing
  • US10914361B2 patent drawing
  • US10914361B2 patent drawing

AI summary

Disclosed is a multi-gear torquer with end covers on both sides of the casing. An input shaft and an output shaft are respectively arranged at the center of the two end covers. A sun gear is fixed on the input shaft and moves along a planet gear engaged in the transmission mechanism. The planet gear meshes with a gear ring and moves around the sun gear, then the planet gear drives the turntable centrally fixed with the output shaft connected to the load end. The multi-gear torquer disclosed herein has the following advantages: large output torque and high mechanical efficiency, and it can be used as power transmission equipment for a car or a train and used as other mechanical transmission equipment.