Modular Chassis for Semi-Trailer Tanks Using Screwed Deep-Drawn Steel
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Solution Overview
Problem
Current tank manufacturing methods involve unique, welded chassis designs for each model, leading to deformation and potential cracking under temperature changes or load stress, requiring skilled labor and complex quality control, and limiting flexibility in production and repair.
Innovation Solution
A modular chassis composed of deep drawn stainless steel pieces that are screwed together, eliminating the need for welding and allowing for a universal design that can be used across multiple tank models, with stress distribution optimized through Z-shaped longitudinal members, supports, and a bracing piece, reducing weight and simplifying assembly and repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If welded chassis designs are used for each tank model, then the chassis can be customized to fit specific tank dimensions, but the manufacturing complexity increases and the risk of deformation and cracking under temperature changes or load stress worsens
Solution Approach 1:
The chassis is divided into multiple standardized modules that can be assembled in different configurations. Each module is a self-contained unit with standardized connection interfaces, allowing the same set of modules to be adapted to different tank sizes and models through various assembly arrangements rather than custom welding for each model.
Solution Approach 2:
The patent develops a universal chassis module that can serve multiple tank models and configurations. The standardized modules are designed to be interchangeable and adaptable to different applications, eliminating the need for model-specific welded chassis designs while maintaining compatibility across various tank dimensions.
2Ease of manufacture
If welded chassis designs are used, then the chassis can be manufactured with traditional methods, but the risk of deformation and cracking under temperature changes or load stress increases
Solution Approach 1:
The patent replaces the welding process with mechanical fastening systems (bolts, screws, or other detachable connections). This substitution eliminates the thermal effects of welding that cause deformation and creates stress concentration points prone to cracking, while maintaining structural integrity through properly designed mechanical joints that can accommodate thermal expansion and contraction.
3Reliability
If welded chassis are manufactured by skilled workers with quality control, then the weld seams can be maintained, but the production time and labor costs increase
Solution Approach 1:
The patent replaces welding operations with mechanical fastening operations that are faster, require less skilled labor, and can be automated more easily. The mechanical connection process eliminates the time-consuming steps of welding preparation, execution, and inspection, thereby increasing production speed while reducing dependency on highly skilled workers.
Solution Approach 2:
The modular chassis design with standardized fasteners enables assembly workers to quickly connect components without requiring specialized welding skills. The system is designed to be self-explanatory with standardized interfaces, reducing the need for extensive training and quality control oversight while maintaining assembly quality.
4Adaptability or versatility
If unique welded chassis are designed for each tank model, then the chassis can be optimized for specific applications, but the flexibility in production and repair decreases
Solution Approach 1:
The chassis is segmented into standardized modules that can be independently replaced or repaired. If one module is damaged, only that specific module needs to be replaced rather than repairing or replacing the entire custom-welded chassis, significantly easing repair operations and reducing downtime.
Solution Approach 2:
The universal modules can be used across different tank models, allowing spare parts to be shared between different applications. This universality enhances repair flexibility as the same module can serve multiple tank types, and production flexibility as the same modules can be assembled into different configurations for various applications.
Data Source
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AI summary
The invention relates to a modular chassis for semi-trailer and rigid tanks, which is formed by two longitudinal members (1) to which are attached a series of brackets (5) on which the tank (7) rests. The chassis comprises three pieces that are deep drawn with ribs and folds to provide sufficient rigidity to the system and redistribute the stresses, all the pieces being joined together by screws: two supports (2) and (3) attached to the outer and bottom walls of each longitudinal member (1), and a third bracing piece (4) that joins the supports (2, 3) of each opposite side of the tank, forming together means for coupling each axle (8) to the corresponding suspension (81) thereof.