Split Ring Gear Planetary Carrier Adapter
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Solution Overview
Problem
Existing planetary gear sets face challenges in integrating main gear sets designed as Simpson planetary gear sets into Lepelletier gear sets due to lack of binding ability, and in achieving axial fixing and centering of planetary carriers with split ring gears perpendicular to their axis of rotation.
Innovation Solution
A planetary gear set design featuring a split ring gear formed from two coaxially arranged ring gear parts, with an adapter component that establishes a torque-proof connection to the planetary carrier through axially extending fingers and a retaining ring for axial fixing, enabling simple and cost-effective binding ability and axial centering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a ring gear is designed in split form perpendicular to its axis of rotation to enable mounting from the opposite side, then the ease of manufacture and binding ability are improved, but the device complexity increases due to additional ring gear parts and intermediate penetration parts
Solution Approach 1:
The ring gear is divided into two separate ring gear parts that can be mounted from opposite sides of the planetary carrier, enabling independent access to each part for assembly and maintenance purposes
2Adaptability or versatility
If the ring gear is split into two coaxially arranged parts, then the binding ability and axial fixing are improved, but the manufacturing precision requirements increase due to the need for precise alignment and connection between parts
Solution Approach 1:
An intermediate penetration part is introduced as a mediator between the two ring gear parts, providing a reference surface and connection interface that facilitates precise alignment and reduces manufacturing tolerance requirements
Solution Approach 2:
The two ring gear parts are designed to self-align through their operative connection with the planetary carrier and each other, where the geometry of the parts themselves provides alignment features that reduce dependency on external alignment mechanisms
3Power
If an adapter component is introduced to connect the planetary carrier to additional components, then the binding ability and torque transfer capability are improved, but the device complexity increases due to additional components and connection mechanisms
Solution Approach 1:
The adapter component is designed as a multi-functional element that simultaneously provides torque transfer, axial fixing, and centering functions, consolidating multiple requirements into a single component that reduces overall system complexity
Solution Approach 2:
The adapter component merges the functions of torque transfer connection and axial positioning into a single integrated element that connects to both the planetary carrier and additional components, reducing the number of separate parts needed
Data Source
AI summary
A planetary gear set has a sun gear, multiple planetary gears mounted on a planetary carrier, and a ring gear enclosing the planetary gears, which is designed in split form perpendicular to its axis of rotation and is formed from two ring gear parts arranged coaxially to each other. An adapter component that, for the purpose of a torque-transferring or torque-supporting operative connection of the planetary carrier, is connected in a torque-proof manner to an additional component in a mounted state with the planetary carrier, and is guided, viewed radially, outward by the ring gear parts.