Cast Tractor Front Axle Frame for Heavy Load Strength
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Solution Overview
Problem
The existing configuration of a tractor's front axle frame, which is welded from steel strips or sheets, is prone to cracks during heavy load tasks like bulldozing and towing, leading to a decrease in productivity and increased costs due to the need for additional reinforcement members and welding.
Innovation Solution
A cast metal front axle frame with a support portion at its bottom, which provides high strength without the need for multiple components or welding, thereby reducing the risk of cracks and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a front axle frame is constructed by welding steel strips or sheets, then the structure can be assembled from standard components, but the welded portions are prone to cracks during heavy load tasks and require additional reinforcement members
Solution Approach 1:
The patent merges multiple separate welded components (side members and cross members) into a single integrated cast metal front axle frame. This eliminates the welded joints that are prone to cracking while maintaining the structural functionality of supporting the front axle case, thereby resolving the contradiction between strength and crack resistance.
Solution Approach 2:
The patent transitions from assembling multiple steel components through welding to using a monolithic cast metal structure. The casting process creates a homogeneous material structure without weak welded joints, providing both the required strength and reliability for heavy load tasks without crack propagation risks.
2Strength
If reinforcement members are welded to the front axle frame to increase strength, then the degree of strength capable of withstanding heavy load tasks is improved, but the number of components and welding steps increases drastically
Solution Approach 1:
The patent combines the functions of multiple components (side members, cross members, and reinforcement members) into a single cast metal front axle frame. This eliminates the need for multiple welding operations and assembly steps, thereby maintaining high strength requirements while significantly improving manufacturing productivity.
3Strength
If reinforcement members are welded to the front axle frame to increase strength, then the degree of strength capable of withstanding heavy load tasks is improved, but the manufacturing costs rise drastically
Solution Approach 1:
The patent integrates multiple structural elements into a single cast metal component, eliminating the need for purchasing, storing, and welding multiple separate reinforcement members. This reduces manufacturing complexity and costs while achieving the required strength for heavy load tasks through the monolithic structure.
4Adaptability or versatility
If a cast metal front axle frame is used to increase vehicle weight for heavy load tasks, then the suitability for bulldozing and towing is improved, but the weight of the front axle frame itself increases
Solution Approach 1:
The cast metal front axle frame allows for local thickening at specific locations requiring high strength (such as support portions for the front axle case) while maintaining thinner sections elsewhere. This optimized weight distribution provides the necessary adaptability for heavy load tasks without uniformly increasing the overall weight of the front axle frame.
Data Source
AI summary
To obtain a front axle frame having a high degree of strength appropriate to heavy load tasks, without resulting in a decrease in productivity or a drastic rise in costs. In a tractor that includes a front axle frame supporting a front axle case, the front axle frame is configured by a cast metal member having a support portion on a bottom of the front axle frame, the support portion supporting the front axle case.