Receptacle Device for Drive Axle Test Bench Load Simulation
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Solution Overview
Problem
Existing test benches for drive axles in motor vehicles do not effectively simulate realistic load distribution and torque application, leading to less accurate wear and service life testing.
Innovation Solution
A test bench with a receptacle device featuring an inner unit with a partially spherical surface, allowing for translationally fixed and multi-axis rotatable reception of the drive axle, combined with a loading device that applies dynamic forces and a part-turn drive for simulating gradients, along with vibration isolation to minimize external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the drive axle is rigidly clamped onto the test bench, then the testing stability is improved, but the realism of load distribution simulation deteriorates
Solution Approach 1:
The receptacle device incorporates a suspension system with spring elements that enable dynamic movement and rotation of the inner unit relative to the outer unit. This allows the drive axle to experience realistic load distributions including vertical, longitudinal, and lateral forces while maintaining testing stability through the controlled suspension mechanism.
2Device complexity
If simple clamping is used, then the device complexity is reduced, but the accuracy of torque application simulation deteriorates
Solution Approach 1:
The receptacle device is divided into an outer unit for connection to the test bench and an inner unit for receiving the drive axle. This segmentation allows the inner unit to be equipped with specialized components like spherical surfaces and suspension elements for accurate torque simulation, while the outer unit provides stable mounting, thus achieving high precision without excessive overall complexity.
3Reliability
If multi-axis rotation capability is added to the inner unit, then the realism of in-vehicle condition simulation is improved, but the device complexity increases
Solution Approach 1:
The inner unit is equipped with a spherical surface that engages with a corresponding spherical receptacle in the outer unit. This spherical interface enables multi-axis rotation and angular movement, accurately simulating the drive axle's behavior in-vehicle while maintaining a relatively simple mechanical structure compared to multi-joint mechanisms.
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
Enables a more realistic and stable simulation of load distribution and torque application, closely mimicking in-vehicle conditions, thereby enhancing the accuracy and reliability of drive axle testing.
Implementation Method 1
the inner unit has a spherical interface to the outer unit, by means of which the inner unit is translationally fixed and flexibly rotatable about more than one axis
Data Source
AI summary
The invention relates to a receptacle device (6) for receiving a drive axle (4) of a motor vehicle for a test bench (2). In order to achieve a load distribution that is more realistic in comparison to the prior art, according to the invention the receptacle device (6) has at least one external unit (18) for connection to the test bench (2) and at least one inner unit (20), enclosed at least in part by the outer unit (18), wherein the inner unit (20) is translationally fixed relative to the outer unit (18) and is designed to be flexibly rotatable about at least one axis, and wherein the inner unit (20) has a recess (40) suitable for receiving the drive axle (4).