Cycloid Pinwheel Reducer Dual-Level Speed Reduction
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Solution Overview
Problem
Cycloid pinwheel reducers face challenges in compactly engaging with other transmission structures for multiple speed reduction, resulting in increased space occupancy and inefficiencies in speed reduction processes.
Innovation Solution
The design incorporates a first and second transmission assembly with a central gear, transmission gears, bearings, and cycloid pinwheels, where the central gear is meshed with an outer driving device, and the second transmission gears, with eccentric portions, rotate the cycloid pinwheels to achieve dual-level speed reduction, allowing for a more compact and efficient engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a common cycloid pinwheel reducer uses a simple structure with input shaft, eccentric shaft, and cycloid pinwheels, then the device complexity is low, but the adaptability to engage with other transmission structures is poor
Solution Approach 1:
The patent applies universality by designing the input shaft with integrated mounting structures including flanges, coupling structures, and bearing seats that enable the cycloid pinwheel reducer to engage with multiple different transmission structures. This multi-functional design allows a single device to serve various engagement purposes without requiring separate specialized components for each application type.
Solution Approach 2:
The patent applies segmentation by dividing the transmission structure into modular components such as the input shaft assembly, eccentric shaft assembly, cycloid pinwheel assembly, and output shaft assembly. Each module can be independently designed, manufactured, and assembled, allowing flexible engagement with different transmission structures while maintaining overall system functionality.
2Ease of operation
If the transmission structures are arranged with sufficient spacing for engagement, then the ease of operation is improved, but the volume occupied by the reducer increases
Solution Approach 1:
The patent applies nesting by placing the eccentric shaft and cycloid pinwheels within the hollow cylindrical structure of the input shaft assembly. The output shaft is positioned concentrically within the housing, and various transmission components are nested within each other to maximize space utilization. This nested arrangement allows sufficient spacing for engagement operations while minimizing the overall volume occupied by the reducer.
Solution Approach 2:
The patent applies dimensionality change by utilizing the radial and axial dimensions efficiently. The mounting flanges extend radially to provide engagement interfaces without increasing the primary cylindrical volume. The eccentric shaft operates in a radial offset position, and the cycloid pinwheels are arranged axially to achieve multiple speed reductions within a compact radial footprint, effectively using three-dimensional space to resolve the volume-engagement contradiction.
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 configuration enables a compact and efficient multiple speed reduction process, reducing the overall space required and enhancing the cycloid pinwheel reducer's ability to engage with other transmission structures effectively.
Implementation Method 1
a central gear 11, a first transmission gear 13, a second transmission gear 15... The central gear 11 is a substantially hollow round plate. A teeth portion 112 is formed in an outer circular wall of the central gear 11 to mesh with the outer driving device
Implementation Method 2
The second transmission gear 15 includes a base body 151, a second teeth portion 153, a first eccentric portion 155, and a second eccentric portion 157... the second transmission gears, with eccentric portions, rotate the cycloid pinwheels to achieve dual-level speed reduction
Implementation Method 3
a plurality of first bearings 17, a plurality of second gears 18... Each two first bearings 17 are assembled to one corresponding second transmission gear 15
Data Source
AI summary
A cycloid pinwheel reducer includes a housing, two cycloid pinwheels, a plurality of rollers, an output flange, and a first transmission assembly. The housing forms an inner teeth ring in an inner wall of the housing. The two cycloid pinwheels are received in the housing. Each cycloid pinwheel forms a meshing portion. The rollers roll in position between the housing and the meshing portions. The output flange is non-rotatably connected with the cycloid pinwheels. The first transmission assembly includes a first transmission gear, a second transmission gear meshed with the first transmission gear. The second transmission gear includes a base body, a second teeth portion positioned on the base body, a first eccentric portion, and a second eccentric portion. The second teeth portion is meshed with the first transmission gear. The two cycloid pinwheels is sleeved on the first and second eccentric portions respectively.