Fiber Composite Axle Guide With Secondary Connection Point
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Solution Overview
Problem
Existing suspension devices for commercial vehicle axles made of fiber composite material are prone to overloading due to larger forces and moments during operation, particularly at the connection areas between the link and axle.
Innovation Solution
Incorporating an additional secondary connection point on the axle body that allows forces and moments to be distributed from the axle body into the axle guide arrangement, relieving the main connection points and reducing the risk of overloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If fiber composite material is used for the axle guide arrangement, then weight is reduced and corrosion resistance is improved, but the connection area becomes prone to overloading under larger forces and moments
Solution Approach 1:
The connection between the axle guide arrangement and axle body is segmented from a single main connection point into multiple connection points (at least two main connection points and one secondary connection point). This segmentation distributes the mechanical loads across multiple locations, preventing concentration of forces and moments at a single vulnerable connection area, thereby resolving the contradiction between using lightweight fiber composite material and maintaining connection strength.
2Device complexity
If only two main connection points are used, then the structure is simple, but the connection points are prone to overloading under larger forces and moments
Solution Approach 1:
Different connection points are assigned different functions and load-bearing characteristics. The main connection points handle primary mounting functions, while the secondary connection point specifically addresses load distribution. This local differentiation of connection point qualities allows the structure to maintain simplicity while enhancing reliability through strategic placement and functional assignment of multiple connection points.
3Reliability
If additional secondary connection points are added to distribute forces, then loading risk is reduced, but device complexity increases
Solution Approach 1:
The secondary connection point is merged with the existing structural framework of the axle guide arrangement rather than being added as a completely separate component. This integration approach allows the force distribution function to be achieved while minimizing the increase in overall device complexity, as the secondary connection point utilizes the existing fiber composite material structure and connection methodologies.
Data Source
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AI summary
The invention relates to a suspension device for a vehicle axle of a vehicle, comprising an axle steering arrangement (10) which is mounted on a vehicle frame (4) of the vehicle (1) in a pivotal manner about a pivot axis (9) by means of two mutually spaced frame-side attachment points (14), consists of a fiber composite material, and is rigidly connected to an axle element (18) of the vehicle axle (3) by means of two mutually spaced axle-side main attachment points (17) that are provided at a distance to the pivot axis (9). The axle steering arrangement (10) is additionally rigidly connected to the axle element (18) by means of at least one axle-side auxiliary attachment point (21).