Chassis Frame Torsional Rigidity via Rectangular Tubes
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Solution Overview
Problem
Long chassis frames in vocational truck vehicles are prone to bending and twisting due to exerted forces and torques during parking, potentially leading to permanent deformation, which existing solutions attempt to address through aftermarket sub-bases but may not provide sufficient rigidity.
Innovation Solution
A chassis frame design featuring right and left side rails joined by crossmembers, with rectangular tubes and uniting members providing additional support and torsional rigidity, fabricated from steel to enhance structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a long chassis frame is used for vocational truck vehicles, then the vehicle can accommodate vocational equipment and achieve desired length, but the chassis frame becomes prone to bending and twisting under forces and torques
Solution Approach 1:
The chassis frame is segmented into multiple structural components: side rails with channels, rectangular tubes positioned on top walls, and uniting members connecting them. This segmentation allows each component to contribute specifically to torsional rigidity while maintaining the overall long length needed for vocational use.
Solution Approach 2:
The chassis frame employs a composite structural approach by combining channel sections, rectangular tubes, and uniting members into an integrated assembly. This composite construction creates a more rigid structure that resists bending and twisting forces better than a simple channel section alone.
2Stability of the object's composition
If aftermarket sub-bases are added to rigidify the chassis frame, then structural stability improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The structural features that provide rigidity are merged directly into the chassis frame construction itself. The rectangular tubes and uniting members are integrated as part of the frame assembly, eliminating the need for separate aftermarket sub-bases and reducing overall system complexity.
Solution Approach 2:
The rigidity-enhancing features are built into the chassis frame during original manufacturing rather than being added later as aftermarket modifications. This preliminary incorporation of structural reinforcements simplifies the overall system by eliminating subsequent installation steps.
Data Source
AI summary
A chassis frame has a right side rail and a left side rail running lengthwise of the frame opposite each other and joined together by at least one crossmember. A rectangular tube overlies, and has underlying support by, the top wall of the respective side rail. A right uniting member runs lengthwise of the frame for uniting the right rectangular tube and the right side rail in assembly, and a left uniting member runs lengthwise of the frame for uniting the left rectangular tube and the left side rail in assembly. Each uniting member has a horizontal flange overlying and joined to the respective rectangular tube, and a vertical flange extending downward from the respective horizontal flange and joined to the respective side rail.