Urethane Hybrid Agricultural Vehicle Track Lug Reinforcement
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Solution Overview
Problem
Existing vehicle tracks with guide-drive lugs suffer from internal lug stresses, surface wear, and premature failure due to contact with guide-drive bars, leading to reduced service life and potential removal of the lugs, necessitating a stronger and more resistant track design.
Innovation Solution
The use of urethane reinforcement material for the guide-drive lugs and wheel path areas, combined with elastomeric materials for the outer surface, and optional metal reinforcement within the urethane structure, enhances the durability and longevity of the tracks by improving torque transfer and traction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rubber material is used for guide-drive lugs, then the track provides flexibility and shock absorption, but the lugs suffer from internal stresses, surface wear, and premature failure
Solution Approach 1:
The patent applies composite materials by combining rubber material with urethane reinforcement specifically in the guide-drive lugs. The urethane material is embedded within or applied to the rubber track body at the lug locations, creating a composite structure that leverages the wear resistance and strength of urethane while maintaining the flexibility of rubber in other track areas.
Solution Approach 2:
The patent implements local quality by applying urethane reinforcement only to specific high-wear areas (guide-drive lugs) rather than the entire track. This localized reinforcement targets the specific problem areas where contact with guide-drive bars occurs, while preserving the overall rubber track properties for flexibility and shock absorption in non-critical areas.
2Strength
If fabric reinforcement is applied to guide-drive lugs, then the lugs gain some structural support, but the reinforcement is substantially abraded by wheel contact
Solution Approach 1:
The patent replaces fabric reinforcement with urethane reinforcement in the guide-drive lugs. Urethane material provides superior abrasion resistance compared to fabric, creating a composite structure that maintains structural support while resisting the substantial wear caused by wheel contact during vehicle maneuvers.
Solution Approach 2:
The patent changes the material parameter from fabric to urethane in the guide-drive lugs. This material substitution fundamentally alters the wear characteristics, providing significantly higher resistance to abrasion from wheel contact while maintaining the necessary structural rigidity for lug function.
3Reliability
If urethane reinforcement is used in guide-drive lugs, then wear resistance and strength are improved, but the track structure becomes more complex
Solution Approach 1:
The patent manages complexity by applying urethane reinforcement only locally to guide-drive lugs rather than throughout the entire track structure. This localized approach provides the necessary durability improvements in critical areas while minimizing the overall structural complexity and maintaining simplicity in non-critical track regions.
Data Source
AI summary
An endless vehicle track includes a body having an outer surface and an inner surface. The outer surface includes a carcass and a series of ground engaging profiles longitudinally spaced along the outer surface. The inner surface includes a wheel path and a series of longitudinally spaced guide-drive lugs. One or more of the series of ground engaging profiles, the series of longitudinally spaced guide-drive lugs, the carcass and the wheel path comprise a urethane material.