Hydrodynamic Counterrotating Converter with Planetary Gearing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing force transmission assemblies for variable-speed work machines are complex, costly, and heavy due to the use of coupling sleeves and multiple planetary gearings, making them difficult to manufacture and install, and they lack accessibility for repairs.
Innovation Solution
A force transmission device using a hydrodynamic counterrotating converter with direct mechanical connections to the planetary gearing elements, eliminating the need for a coupling sleeve and additional stationary transmissions, allowing for a compact and simple structure with fewer components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a coupling sleeve or hollow shaft is used to connect concentric shafts, then the structure is space-saving, but the structure becomes heavy, costly, and difficult to access for repairs
Solution Approach 1:
The device divides the power transmission into separate mechanical and hydrodynamic branches that can be independently accessed and maintained. The planetary gearing is separated from the hydrodynamic converter, allowing each component to be serviced independently without disassembling the entire structure.
Solution Approach 2:
The patent introduces a stationary transmission as an intermediary component that connects the hydrodynamic converter to the planetary gearing. This mediator allows the hydrodynamic branch to be accessed and maintained separately from the mechanical branch, resolving the accessibility issue while maintaining compactness.
2Strength
If a coupling sleeve with large diameter is used, then the ring gear can be connected, but the structure becomes costly and complex
Solution Approach 1:
The connection function is segmented between the stationary transmission and the planetary gearing. The stationary transmission provides the robust connection needed for strength, while the planetary gearing maintains its structural integrity. This separation eliminates the need for an oversized coupling sleeve.
Solution Approach 2:
The stationary transmission acts as a simplified copy or alternative solution to the complex coupling sleeve structure. It achieves the same connection function with simpler, more cost-effective components.
3Ease of operation
If multiple individual components are used to connect parallel transmission shafts, then the connection is achieved, but production and installation become costly and complex
Solution Approach 1:
The stationary transmission combines multiple connection functions into a single integrated component. Instead of using multiple individual components to connect parallel shafts, the stationary transmission provides a unified structure that achieves the same functionality with fewer parts, reducing production and installation costs.
4Loss of energy
If a hydrodynamic synchronized converter is used, then efficiency is maintained, but the construction becomes complex
Solution Approach 1:
The power transmission is segmented into separate mechanical and hydrodynamic branches. The hydrodynamic converter only handles a specific portion of the power transmission, while the larger part is transmitted mechanically. This segmentation allows the use of a simpler counterrotating converter design without compromising overall system efficiency.
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
The device achieves a compact, lightweight, and cost-effective design with improved accessibility, enabling efficient power transmission from a constant-speed drive assembly to a variable-speed work machine with minimal axial forces on planetary gearing elements.
Implementation Method 1
a hydrodynamic counterrotating converter (20), having a pump wheel (7) connected to the input shaft (4) and a turbine wheel (10) directly connected to the sun wheel (13) of the planetary gearing (11)
Data Source
AI summary
The invention relates to a device (1) for transmitting force from an input shaft (4) connected to a drive assembly (2) having constant speed to an output shaft (6) connected to a working machine (3) having variable speed, comprising: a hydrodynamic transducer (20); and a differential transmission designed as a planetary gear unit (1), comprising a ring gear (12), a sun gear (13) and a planet carrier (14) having a plurality of planets (15) as elements of the planetary gear unit. The invention is characterized in that: the hydrodynamic transducer is designed as a counter-movement transducer; the input shaft is directly connected to a pump impeller (7) of the hydrodynamic transducer and a first element (14) of the planetary gear unit; a turbine wheel (10) of the hydrodynamic transducer is directly connected to a second element (13) of the planetary gear unit, and the output shaft is connected at least indirectly to a third element of the planetary gear unit.