Axle Drive Test Bench Frame With Parallel Shaft Pass-Through
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor vehicle test benches face challenges in testing electric axle drive modules due to the proximity of shafts and high rotation speeds, requiring costly special transmissions and lacking precise torque determination, especially for passenger cars.
Innovation Solution
A drive unit for a test bench comprising an electric drive motor and a frame, designed to accommodate the motor radially within the frame, with vibration-damping and rigid properties, allowing high rotation speeds and precise torque measurement, and featuring a frame with openings for guiding drive output shafts parallel to the motor, and optional stiffening plates or drum bodies to enhance rigidity and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard transmission is used without radial offset, then the structure remains simple and cost-effective, but the output shaft cannot be coupled to the input shaft of the compact electric axle drive module
Solution Approach 1:
The patent introduces a radial offset dimension in the transmission design, positioning the output shaft at a radial distance from the input shaft. This dimensional change enables the output shaft to be coupled to the electric axle drive module's input shaft while maintaining a compact overall structure, resolving the coupling capability issue without requiring complex special transmissions
2Volume of moving object
If the radial distance between input shaft and output shaft is small, then the axle module remains compact, but the ability to couple shafts on a test bench is made more difficult
Solution Approach 1:
The transmission is segmented into distinct functional zones: an input section receiving rotation from the drive motor, and an output section delivering rotation to the axle drive module. This segmentation allows the input and output shafts to be positioned at different radial locations, enabling easy coupling on test benches while maintaining the compact overall design of the axle module
3Speed
If high input rotation speeds are used, then the electric axle module operates efficiently, but severe demands are placed on vibration-damping properties and rigidity of the test bench
Solution Approach 1:
The transmission acts as an intermediary between the drive motor and the axle drive module, serving as a vibration isolation element. By positioning the transmission with its radial offset design, it absorbs and dampens vibrations generated during high-speed operation, protecting the test bench structure while enabling efficient high-speed operation of the electric axle module
Data Source
AI summary
A drive unit (100) is provided for a test bench (200) for testing an electric axle drive module (240) for a motor vehicle. The drive unit has an electric drive motor (110) and a frame (130), where the drive motor (110) is accommodated radially by the frame (130) and is held in the frame (130) in such manner that it can drive an input shaft (241) of an axle drive module (240). The drive unit (100) is characterized in that the frame (130) has at least one opening (140) designed to guide a drive output shaft (242, 243) of the axle drive module (240) through the frame (130), parallel to the drive motor (110). The drive unit can be part of a corresponding test bench.