Torque Multiplier Module Planetary Gear Design
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Solution Overview
Problem
High-torque wrenches are often large, heavy, and unwieldy, limiting their applicability and increasing operational, storage, and transportation costs due to their limited versatility in providing high-torque capabilities.
Innovation Solution
A torque multiplier module with a sealed housing and planetary gear arrangement that engages an external input to produce an output torque greater than the input torque, allowing multiple modules to be stacked for increased torque output, and featuring a drive fitting connected to a planet carrier for efficient torque transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If high-torque wrenches are designed with large pistons or long handles to generate high torque output, then torque capability is improved, but device size and weight increase
Solution Approach 1:
The planetary gear arrangement nests multiple gears (sun gear, planet gears, ring gear) within a compact housing, allowing high torque multiplication in a small package. The planet carrier holds multiple planet gears that orbit within the ring gear, creating a nested configuration that achieves high torque output without proportional increases in size or weight.
Solution Approach 2:
The planetary gear arrangement acts as an intermediary between the input drive fitting and the output drive fitting. This gear system multiplies torque through mechanical advantage while maintaining compact dimensions, resolving the contradiction between torque capability and device weight.
2Force
If high-torque wrenches are designed with large pistons or long handles, then torque capability is improved, but device complexity increases
Solution Approach 1:
The torque multiplier module is designed as a separate, self-contained unit that can be attached to various wrenches. This segmentation allows the complex planetary gear mechanism to be isolated in a dedicated module rather than integrated into the entire wrench, reducing overall system complexity while maintaining high torque capability.
Solution Approach 2:
The planetary gear arrangement serves as an intermediary torque multiplication mechanism that can be interfaced with different wrench types through standardized drive fittings. This intermediary approach allows high torque output without requiring the entire wrench system to be complex.
3Force
If specialized high-torque wrenches are manufactured, then torque capability is improved, but adaptability decreases
Solution Approach 1:
The torque multiplier module is designed with universal input and output drive fittings that can interface with various wrench types (manual, electric, hydraulic). This universality allows a single module design to enhance multiple different wrench systems, improving adaptability while maintaining high torque capability through the planetary gear mechanism.
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
Enables reliable and efficient high-torque output with reduced weight and size, increasing the versatility of low-torque wrenches for use with large fasteners, reducing equipment needs and costs, and allowing use in various environments, including underwater.
Implementation Method 1
a planetary gear arrangement disposed inside the sealed housing. The planetary gear arrangement may be configured to engage an external input received from the wrench via the input opening
Implementation Method 2
a valve configured to unidirectionally receive pressurized lubrication into the housing
Data Source
AI summary
A torque multiplier module is disclosed for use with a wrench. The torque multiplier module may include a sealed housing having an input opening and an output opening, and a planetary gear arrangement disposed inside the sealed housing. The planetary gear arrangement may be configured to engage an external input received from the wrench via the input opening. The torque multiplier module may also include a drive fitting connected to the planetary gear arrangement and accessible via the output opening.