Electric Drive Adapter Housing for SAE Hydraulic Mount Compatibility
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Solution Overview
Problem
Work vehicles with hydraulic drives face challenges in integrating electric systems due to non-standard hydraulic pump and motor mounting interfaces, which limits the efficiency and cost-effectiveness of electrification efforts.
Innovation Solution
An electric drive assembly with a gear set and adapter housing that utilizes SAE standard hydraulic pump/motor mounting interfaces, allowing for a gear ratio change and power transfer between an electric machine and a drive shaft, thereby replacing hydraulic components with electric ones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-standard hydraulic pump and motor mounting interfaces are used, then hydraulic components can be mounted, but integration with electric systems becomes difficult and costly
Solution Approach 1:
The patent employs an adapter assembly that serves as an intermediary component between the electric drive assembly and the hydraulic component. This adapter includes a mounting flange with bolt holes that match the SAE standard hydraulic mounting pattern, allowing standard hydraulic components to be mounted without modification. The adapter effectively mediates the interface mismatch between electric and hydraulic systems, enabling integration while maintaining standardization and reducing costs.
2Adaptability or versatility
If electric machines are directly mounted without adapters, then mounting simplicity is maintained, but compatibility with standard hydraulic components is lost
Solution Approach 1:
The mounting flange incorporated in the adapter assembly is designed with universal SAE standard hydraulic mounting interface features, including standardized bolt hole patterns and mounting surfaces. This universal interface allows the same adapter design to work with various SAE standard hydraulic components (pumps, motors, etc.), providing multi-functionality and broad compatibility without requiring custom designs for each component type.
3Ease of manufacture
If custom mounting interfaces are designed for electric machines, then precise fitting is achieved, but interchangeability with standard components is reduced
Solution Approach 1:
Instead of designing custom mounting interfaces on the electric machine side, the patent inverts the approach by placing the standardized SAE hydraulic mounting interface on the adapter assembly that interfaces with the hydraulic component. This inversion allows the electric machine to maintain its original mounting characteristics while the adapter provides the standardized interface, achieving both precise fitting and interchangeability.
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 solution enables efficient electrification of hydraulic components, reducing complexity and cost, and facilitating integration with all-electric systems, while maintaining compatibility with existing hydraulic systems.
Implementation Method 1
a gear set at least in part disposed in the interior space of the adapter housing and configured to effect a gear ratio change and transfer power between the shaft of the electric machine and a drive shaft
Data Source
AI summary
An electric drive assembly for operation with a component of a work vehicle having an SAE standard hydraulic pump/motor mount includes an electric machine having a shaft and a mounting flange. An adapter housing defines an interior space between a component mounting flange and an electric machine mounting flange. The electric machine mounting flange is sized and configured to mate with the mounting flange of the electric machine. The component mounting flange has a bolt hole pattern and a mounting pad each of a complementary size and configuration to that of the SAE standard hydraulic pump/motor mount. A gear set at least in part disposed in the interior space of the adapter housing is configured to effect a gear ratio change and transfer power between the shaft of the electric machine and a drive shaft.