Off-Road Truck Chassis Nested Profile Carriers
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Solution Overview
Problem
Conventional all-terrain truck chassis designs face challenges with high material usage and weight due to high load requirements and vertical impacts, leading to reduced payload capacity and increased overall height, which limits stability and torsional stiffness.
Innovation Solution
A chassis arrangement featuring a torsionally flexible intermediate frame with a central tube and support arms, where the profile carriers are partially or fully nested within the support arm openings, and a cover plate is used to enhance rigidity and limit torsion, allowing for reduced overall height and weight while maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional all-terrain truck chassis designs use high material usage and weight to meet high load requirements and vertical impacts, then load-bearing capacity is improved, but overall height increases and payload capacity is reduced
Solution Approach 1:
The profile carriers are nested within the support arm openings, with the cross section of the profile carriers arranged at least partially within the Tragarmdurchbruch. This nesting arrangement allows the structural components to be space-efficient, reducing the overall height of the chassis assembly while maintaining the necessary load-bearing capacity through the interlocking geometry of the nested components.
2Stability of the object's composition
If conventional all-terrain truck chassis designs use high material usage to increase torsional stiffness, then stability is improved, but weight increases and payload capacity is reduced
Solution Approach 1:
The cover plate is applied locally at the support arm openings to enhance rigidity precisely where needed. This localized reinforcement provides the necessary torsional stiffness to the chassis assembly without requiring high material usage throughout the entire structure, thereby reducing overall weight while maintaining stability.
Solution Approach 2:
The chassis assembly combines different structural elements (profile carriers, support arms, cover plates) that work together as a composite system. The profile carriers with their specific cross-sectional geometry nested within the support arm openings, combined with the reinforcing cover plates, create a composite structure that achieves high torsional stiffness with reduced material usage and weight.
3Adaptability or versatility
If the chassis assembly allows excessive torsion, then off-road flexibility is improved, but the structure becomes damaged
Solution Approach 1:
The cover plate acts as a preliminary protective element that prevents excessive torsion before damage can occur. By reinforcing the support arm openings and limiting the degree of twist the chassis can undergo, the cover plate preemptively protects the structural integrity of the intermediate frame and connected components during off-road operation.
Solution Approach 2:
The cover plate changes the torsional parameters of the chassis assembly by increasing rigidity at critical points. This modifies the torsional behavior of the structure, allowing controlled flexibility for off-road operation while preventing the excessive twist that would lead to structural damage.
Data Source
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AI summary
The invention relates to a chassis assembly (4) for a land vehicle (1), in particular for an off-road truck, comprising a chassis frame (2), an intermediate frame (3) which is connected to the chassis frame (2) and which comprises at least one profiled support (9, 10) that runs in a longitudinal direction (L) of the chassis assembly (4), and a support device (6) for supporting a structure (5) of the land vehicle (1). The support device (6) is movably mounted on the intermediate frame (3) and comprises a support arm (8) which runs in a transverse direction (Q) of the chassis assembly (4) and comprises a support arm through-hole (28, 29). The at least one profiled support (9, 10) is guided through the support arm through-hole (28, 29) such that a cross-section (A2) of the at least one profiled support (9, 10) is at least partly arranged within the support arm through-hole (28, 29).