Integrated Traction Head Side Wall Crash Force Management
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Solution Overview
Problem
The existing traction head parts have two independent structures for shell and outer shells, which restrict design, increase weight, complicate assembly, and fail to efficiently absorb crash forces, limiting internal volume and safety.
Innovation Solution
Integration of A-pillars and longitudinal beams within the side walls to divert crash forces into the cabin, creating a self-supporting structure with reduced components, weight, and enhanced safety, while maintaining external dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the structural frame and outer shell are designed as two independent structures, then the static and crash loads can be borne, but the cabin design is restricted and the weight is increased
Solution Approach 1:
The patent merges the structural frame and outer shell into an integrated side wall structure. The longitudinal members serve dual functions as both structural load-bearing elements and outer shell components, eliminating the need for separate structural frame and shell assemblies. This integration reduces the total number of components and overall weight while maintaining crash load bearing capacity through the optimized load path design.
2Strength
If the structural frame and outer shell are designed as two independent structures, then the crash loads can be borne, but the assembly becomes more difficult
Solution Approach 1:
The patent combines the structural frame and outer shell assembly into a single integrated side wall structure that can be manufactured and assembled as one unit. The longitudinal members are designed to incorporate both structural and shell functions, eliminating the need for separate assembly operations and reducing manufacturing complexity.
3Strength
If the structural frame and outer shell are designed as two independent structures, then the crash loads can be borne, but the available space in the cabin is reduced
Solution Approach 1:
The patent integrates the structural frame and outer shell into a unified side wall structure, eliminating the space required for separate structural components and fastening systems. This integration maximizes the usable internal volume of the cabin by removing redundant structural elements and simplifying the overall construction.
4Strength
If two independent structures are used, then the crash forces can be transferred, but the number of components is increased and costs are increased
Solution Approach 1:
The patent consolidates multiple independent components (structural frame members, outer shell panels, fasteners, and mounting brackets) into a single integrated side wall assembly with longitudinal members that perform multiple functions. This reduction in component count simplifies the overall structure, reduces assembly steps, and lowers manufacturing and maintenance costs while preserving the essential force transfer capability.
Data Source
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AI summary
The invention relates to a traction head part (1) having a cabin (3), which comprises a floor region (5), a roof (7) and two side walls (9), which extend between the floor region (5) and the roof (7), wherein the side walls (9) each have an A-column (13) on the head end thereof (11), which is held on the floor region (5), one longitudinal beam (17) extends into the side walls (9) from each A-column (13), and the unit is structured by the A-column (13) and longitudinal beam (17) in order to absorb and direct forces into the cabin (3) in the case of a crash.