Modular Planetary Gear Stages for Adaptable Swing Reducer Ratios
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Solution Overview
Problem
Existing swing reducers for construction machines, such as excavators and cranes, have fixed gear ratios that cannot be easily adapted, requiring the design of entirely new reducers for different applications, limiting versatility and increasing development costs.
Innovation Solution
A modular planetary gear module system with interchangeable interfaces allows for the combination of multiple modules to achieve various gear ratios, enabling flexible design and adaptation of swing reducers without altering existing components, thus providing a wide range of applications with reduced development cycles and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed gear ratio swing reducer is designed for a specific machine, then the transmission performance is optimized for that application, but the adaptability to other applications is lost and entirely new designs are required
Solution Approach 1:
The swing reducer is divided into multiple independent planetary gear modules, each with standardized interfaces. This segmentation allows individual modules to be designed for specific transmission ratios while maintaining compatibility with other modules, enabling both optimized performance for specific applications and adaptability through reconfiguration.
Solution Approach 2:
The planetary gear modules are designed with universal standardized interfaces that allow the same module design to be used across different applications and configurations. This multi-functionality enables modules to serve different purposes by changing their arrangement rather than redesigning entire reducers for each application.
2Adaptability or versatility
If entirely new swing reducers are designed for different gear ratios, then the gear ratio requirements are met, but the development time and manufacturing complexity increase
Solution Approach 1:
By segmenting the swing reducer into standardized planetary gear modules, the development process is simplified. Once a module design is created, it can be reused across multiple applications by changing the number and arrangement of modules, dramatically reducing development cycles for different gear ratio requirements.
Solution Approach 2:
Different gear ratios are achieved by changing the arrangement and number of modular components rather than redesigning the entire system. This parameter change approach allows rapid adaptation to different requirements while reusing proven module designs, reducing both development time and manufacturing complexity.
3Adaptability or versatility
If modular planetary gear modules with standardized interfaces are used, then the adaptability and reconfigurability are improved, but the interface design complexity increases
Solution Approach 1:
The standardized interfaces are designed to be universal, handling multiple functions (mechanical connection, power transmission, alignment) through a single integrated design. This universality reduces the need for multiple specialized interface types, actually simplifying the overall interface design while maximizing reconfigurability.
Data Source
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AI summary
A planetary gear module for a swing reducer of a construction machine is provided. The module is configured to be integrated in-between first and second adjacent planetary gear modules. The planetary gear module comprises a planetary gear stage and a stage support for supporting the planetary gear stage, the stage support comprising an input support interface for stacking the first adjacent planetary gear module onto the module and an output support interface for stacking the module onto the second adjacent planetary gear module, the planetary gear stage comprising an input gear interface for operatively connecting the module to a gear of the first adjacent module and an output gear interface for operatively connecting the module to a gear of the second adjacent module, wherein the output support interface and the input support interface as well as the output gear interface and the input gear interface of the module are configured to match to each other.