Segmented Axle Link Clamping for Easier Suspension Assembly
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Solution Overview
Problem
Existing axle suspension designs for commercial vehicles face issues with relative movements between chassis parts under heavy loads, leading to undesirable offsets, and assembly difficulties due to voluminous and heavy designs that require specific assembly directions.
Innovation Solution
The axle guide and suspension feature divided support surfaces on link sections with curved shell contours and circumferential sections without direct support, allowing for flexible assembly and improved clamping through partial surface contact, enhanced by surface roughening using laser processing for increased adhesion and resistance to offset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the support surface on the link section is continuous to maximize contact area with the axle body, then the connection strength is improved, but the assembly becomes more difficult and requires specific assembly directions
Solution Approach 1:
The continuous support surface is segmented into multiple discrete support areas arranged circumferentially around the axle body. This segmentation allows the link section to be assembled in different directions without requiring precise alignment, as each support area can independently engage with the axle body surface, thereby maintaining connection strength while improving assembly ease.
2Reliability
If the axle guide completely encloses the axle body to prevent relative movements, then the connection stability is improved, but the design becomes voluminous and heavy
Solution Approach 1:
Instead of complete enclosure, the link section uses segmented support areas distributed around the axle body circumference. This provides sufficient constraint to prevent relative movements and maintain connection stability, while removing unnecessary material reduces the weight and volume of the axle guide.
Solution Approach 2:
Support and constraint functions are concentrated at specific local areas (discrete support areas) rather than distributed uniformly throughout the entire circumference. This localized approach provides the necessary stability while minimizing material usage and overall weight.
3Stability of the object's composition
If the link section is designed to clamp the axle body with a narrow strip-shaped support area, then the basic elasticity is improved, but heavy loads cause relative movements and offsets
Solution Approach 1:
The narrow strip-shaped support area is replaced by multiple discrete support areas arranged circumferentially. This segmentation distributes the load across multiple contact points, preventing the concentration of stresses that lead to relative movements and offsets under heavy loads, while maintaining the elastic characteristics of the connection.
Solution Approach 2:
The support structure transitions from a one-dimensional narrow strip to a two-dimensional circumferential distribution of support areas. This dimensional change allows the connection to accommodate loads from multiple directions, improving resistance to offset while preserving elastic behavior.
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 design reduces the risk of permanent offsets and simplifies assembly by allowing flexible installation directions while maintaining effective force transmission without permanent deformation, ensuring secure attachment and resistance to lateral forces.
Implementation Method 1
surface roughening using laser processing for increased adhesion
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Axle suspension arrangement for a vehicle axle, having a rotary axle body (3) and having at least one axle link (10) which crosses the rotary axle body (3) and which is supported relative to the vehicle and which is made up of a front link portion (11) in a direction of travel and of a rear link portion (12) in the direction of travel. The link portions (11, 12) are, by means of support surfaces formed integrally thereon, supported directly against the outer side (13) of the rotary axle body (3) and connected to one another by tension elements (33, 34) extending transversely with respect to the rotary axle body (3). To reduce the risk of relative movements between the connected parts and permit easy installation without restriction to a particular installation direction, the support surface of the front link portion (11) is divided into individual shells (21, 22) with a shell contour curved in an axle circumferential direction. Between the shells (21, 22), there is situated a circumferential portion (27) without direct support of the link portion (11) on the rotary axle body (3).