Multi-stage Planetary Drive Integrated Housing
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Solution Overview
Problem
Current multi-stage planetary drives face challenges in achieving low noise levels and cost-effective production due to complex assembly processes and high production costs, particularly in integrating helical and spur gears.
Innovation Solution
A multi-stage planetary drive design featuring a one-piece cylindrical transmission housing with internal gears, a plastic annulus gear with internal helical gears, and a torque-proof connection using plug-in gears or tongue and groove elements, allowing for a compact and simplified assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple annulus gears are integrated by screwing or adhering to form a one-part sprocket, then torque-proof connection is achieved, but production becomes elaborate and expensive
Solution Approach 1:
The patent combines multiple annulus gears (spur gearing and helical gearing) into a single integrated one-part sprocket component. This merging eliminates the need for separate screwing or adhering operations to connect multiple gears, thereby reducing production complexity and cost while maintaining torque-proof connection reliability.
Solution Approach 2:
The one-part sprocket serves multiple functions simultaneously - it acts as both the spur gear annulus and the helical gear annulus in a single component. This multi-functionality eliminates the need for separate components and assembly operations, resolving the contradiction between reliable torque transmission and ease of manufacture.
2Object-affected harmful factors
If helical gears are used in planetary drives, then noise level is reduced, but production complexity increases due to elaborate assembly mechanisms
Solution Approach 1:
The patent integrates both helical gearing and spur gearing into a single one-part sprocket component. This merging allows the planetary drive to utilize the noise-reducing characteristics of helical gears while eliminating the complex assembly mechanisms that would otherwise be required to install separate helical and spur gears.
Solution Approach 2:
The one-part sprocket combines different gear types (helical and spur) into a single composite structure. This composite design enables the system to benefit from the noise-reducing properties of helical gears without requiring complex multi-component assembly mechanisms.
Data Source
AI summary
The invention relates to a multi-stage planetary drive with at least two annulus gears with internal gears, connected to a housing in a torque-proof fashion, and with at least two sun gears, each of which combing planet wheels arranged on a pinion cage and an annulus gear; according to the invention it is provided that for the formation of a gear speed with at least one annulus gear, the housing is embodied in one piece as a cylindrical transmission housing with internal gears, for the formation of at least one additional gear speed a plastic annulus gear with internal gears is accepted by the transmission housing, and for the torque-proof connection of the plastic annulus gear to the transmission housing torque-proofing means are provided.