Utility Vehicle Frame Structure with Cylindrical Pipe Welding
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Solution Overview
Problem
Conventional utility vehicle frame structures are complex and costly due to the need for multiple pipes coupled in both front-rear and vehicle width directions to achieve strength and rigidity.
Innovation Solution
A frame structure featuring cylindrical pipe frames extending linearly in the vehicle width direction, with larger external diameters for increased coupling areas, simplifying the welding process and maintaining strength and rigidity without the need for complex front-rear and width-direction couplings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple pipes are coupled in front-rear and vehicle width directions to achieve strength and rigidity, then strength and rigidity are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple frame functions into a single integrated bottom frame structure. The bottom frame serves as both the structural base and the mounting structure for gear boxes, eliminating the need for separate coupling pipes in front-rear and width directions. This consolidation maintains strength and rigidity while significantly reducing structural complexity.
Solution Approach 2:
The bottom frame is designed with multi-functionality, serving as both the primary structural element and the mounting platform for gear boxes. The frame's width is specifically designed to accommodate gear box mounting, allowing a single component to fulfill multiple functions that would traditionally require separate structural elements.
2Strength
If multiple pipes are coupled in front-rear and vehicle width directions to achieve strength and rigidity, then strength and rigidity are improved, but manufacturing cost increases
Solution Approach 1:
By combining multiple frame functions into a single bottom frame component, the patent reduces the number of parts that need to be manufactured, stored, and assembled. This consolidation directly reduces manufacturing costs while maintaining the required structural strength through optimized bottom frame design.
3Strength
If cylindrical pipe frames with larger external diameters are used, then coupling area and strength are improved, but material usage increases
Solution Approach 1:
The bottom frame is designed with locally optimized quality, featuring larger external diameters specifically at coupling areas where gear boxes are mounted to maximize coupling strength. The frame maintains appropriate dimensions in non-coupling areas, ensuring material is used efficiently only where structurally necessary for strength and rigidity.
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 configuration allows for a simpler frame structure with enhanced strength and rigidity, easier welding, and improved skid performance on obstacles, while reducing manufacturing complexity and costs.
Implementation Method 1
a bottom front frame that couples a front end of the bottom first frame and a front end of the bottom second frame... and to which a first support member of a gear box for front wheels is welded
Data Source
AI summary
A frame structure of a utility vehicle includes: a left bottom first frame and a right bottom second frame that extend in a front-rear direction and support a floor plate; a bottom front frame that couples a front end of the left bottom first frame and a front end of the right bottom second frame and extends linearly in a vehicle width direction and to which a first support member for a first gear box for front wheels is welded; and a bottom rear frame that couples a rear end of the left bottom first frame and a rear end of the right bottom second frame and extends linearly in the vehicle width direction and to which a second support member for a second gear box for rear wheels is welded, each of the bottom front frame and the bottom rear frame being a cylindrical pipe frame.